ENGLISH-LANGUAGE MANUAL ON THE SOVIET MARINE RADIO-RELAY INSTALLATION, TYPE MKTU-15S

• Document Type: CREST
• Collection: General CIA Records
• Document Number (FOIA) /ESDN (CREST): CIA-RDP80T00246A070500190001-8
• Release Decision: RIPPUB
• Original Classification: C
• Document Page Count: 111
• Document Creation Date: December 27, 2016
• Document Release Date: October 28, 2013
• Sequence Number: 1
• Publication Date: January 7, 1964
• Content Type: REPORT

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CENTRAL INTELLIGENCE AGENCY
50X1
This material contains information affecting the National Defense of the United states within the meaning of the Espionage ? we, Title
18, U.S.C. Secs. 793 and 794, the transmission or revelation of which in any manner to an unauthorized person is prohibited by law.
50X1
NO FOREIGN DISSEM
COUNTRY
USSR
IMPCM
SWUM'
English-Language Manual on the Soviet
DATE DMR.
January 1964
Marine Radio-Relay Installation, Type
MKTU-15s
NO. PAGES 1
REFERENCES
DATE OF
INFO.
PLACE &
DATE ACQ
50X1 -HUM
50X1 -HUM
THIS IS UNEVALUATED INFORMATION. SOURCE GRADINGS ARE DEFINITIVE. APPRAISAL OF CONTENT IS TENTATIVE.
4
3
2
Soviet MKTU-15s naval radio-relay
50X1 -HUM
90-page, English-language manual on tne
installation
No publishing data were giver5oxi -HUM
.
2. The MKTU-15s is an updated version of the MKTU-15,1 it is used to transmit
commands and relays broadcast programs on shipboard. Main components of the
MKTU-15s include the MK-17A microphone posts; MK-10A receiver-amplifier;
MK-21A power-supply-switchboard; electric record player; MN-B extension
microphones; ZGD-ZMA and MARG-1 loudspeakers; RG-2 gain controls; 5-1110-10M
storage batteries; and AMG-Z converters.
3. Part I contains a general section and sections on: installation components;
operation of the MKTU-15s installation; operating instructions and maintenance,
and trouble-shooting procedures. Part II consists of key diagrams and
general views of the installation, plus a list of components. The table of
contents lists an insert entitled "transformers and chokes winding data,"
however, it was not received, The title page of the manual was alsomissing.
50X1 -HUM
NO FOREIGN DISSEVI
GROUP 1
Excluded horn automatic
downgrading and
declassification
STATE I DIA I ARMY I NAVY I AIR I NSA IIFJEK NIC I OCR
(Note: Field distribution indicated by "#".)
50X1 -HUM?
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NO FOREIGN DIbbEll.
50X1
0
MARINE RADIO RELAY INSTALLATION
Type MKTU-15s
C-0-N-F-I-D-E-N-T-1-k-L I
'an wiRP.TaN DISSEM rifitluderg
ilowngrading and
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? ? .
C 0 N T N T S
Part I
DOS(11.a.eT31014 AND OPERATING INSTRUCTIONS
Pe.3e
1. General
1 1 2urpose 0 OOOOOOOO 00000008040060800N 04 11
1-2. Components 0000,0 OO O le, OO 00,404 11
1 ?0, General(Characteristicr, ....... ....... 12
1 4. Operating Posoibilities ?
1 - 5. ...)ower bupply for the installation 008 e 15
1 - G. nectric and Eloetroacoustie
Characteristica 4400400000 16
2, Brief Doscri_ption of the
In8 Ia11a112.1.gaP Onents
1.1dcrophonc Posts MI&?17A 000soOloseibeolproo 18
19
20
26
n
n
Co4
- )
aocuiver-Amplifier Unit MK-10A
Powor-Supply 6witehboard LK-21A
2
- 4.
laectric Record Player
2
- 5.
Headphones 41.004096451000?10
O*0110tWilittl,
:.:
- 6.
::pterac,o ilattery ........,..
..... ?Oes.,0
2
- 7.
Loudspealzers . 044800000 OOOOO 000 OOO 0000
2
- 3.
Sparc Equilaont OOOO
000
29
29
30
36
50X1
',f1 0
11 F
'7 T
DISSLZ
'?'' ,
01
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W 1i0 FOT
3. 1./Re2aLLen(_212...11.....1=-115210'
IRstallation
' Pag e
3 ? I.
2.
? 3,
4.
General Instructions
Operation of the Installation when
Supplied from the Shipin
Feeder ??????? ??????????????????
ntilure?Sit;nalling System e?
Connection of Loudsp6akors 0. ? a 0
4. Operatin. Maintenance
?
8** ? a a .
I.
General ?a ? ??? ? ????????? 1.90?4,1001 ? a ? ? ? a ?
? a ? ?a ? ? I
Preventive Inspection and Measurements.......,
4
? 3.
Attendance of Power Sources...".
? ...
4
? 4.
Attendance of Microphone Posts .... ? ? ?
? 000 ? a
4
? 5.
Attendance of Loudspeakers and
Their Lines ?????? ?? ?????? ?
5. Operating Instructiong
woad,
5
?.1.
Instructions for Working from
Microphone Posts ..........." ** ??
5
? 2.
Instructions for Relaying Broadcast
Program- frem Receiver?.Amplifier
37
38
45
46
48
48
51
53
54
Unit ..0. a a 0 I4 a a *04040 56
Instructions for Checking the Readiness
of the Installation . . ....... 59
6. Troub.lehooting Procedures
6 ? 1. General ? ... ................. 4
62
6 ? 2. Troubles in Microphone Posts ....
? . .......... 63
CONFIDETTIAL
NO 1).05.4,1
tfuel I
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50X1
6
3.
Troubles citn Receiver?Amplifiei
Page
Unit tkiosispte#141.411.6?004# O
63
6
? 4.
Troubles in Supply Circuits ow..., ?
?
66
6
7. 5.
Troubles in Power?Supply Switchboard
69
6
? 6.
Troubles in Loudspeaker,Lines
6
? 7.
Troubles in Pickup ....,......... 000000
?00
74
Part II
KEY DIAGRAMS AND GENERAL VIEWS
Fig.l. General View of Receiver?
Amplifier Unit
Fig.2, General View of Receiver?
Amplifier Unit with Front
Panel Unfolded by 70?
Fig.). General View of Receiver?
Amplifier Unit with Front
Panel Unfolded by 180?
Fig.4. General View of Microphone Post
Fig.5. General View of Microphone Pobt
:with Open Cover
Fig.6. General View of.Microphone Post
In Protective Box
Fig.7. General View of Moving?Coil Loud?
speaker 3M-31?,4A.
FU.8. General View of Moving?Coil
Loudspeaker 3rA-3MA with Open
Cover
1411[;. 9. Moving?Coil Loudspeaker 3rA-3MA,
Disassembled
i......?............?.
P 1
!.Ych,11:1 '?-,!rn zutn7nt13
I
;
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? 6 ?
Fig. 10 41 Us- Diagxam. of LaUclopeater ark,3MA
Fig.11. Loudelpeaker 3rA-3MA and
Gain Control pr-2
Connection Diagram for a
Three?Wire Loudspeaker Line
Fig.12. Loudspeaker 3FA-3F.iA and
Gain Control Pr-2 Connection
Diagram for a Two?Wire
Loudspeaker Line
Fig.13. General View of Gain ControlIT?L
Fig.14. General View of Gain Control Pr-2
with Open Cover
Fig.15. General View of Loudspeaker mar-1
Fig.16. General View of Loudspeaker mApr-1
with Covers Detached
Fig.17. Head of LoudspeakerMAIT-1
1
Fig.18. Moving System ofLoudapeakerMAPr?i
Fig.19. Loudspeaker mor-i.
Circuit Diagram
Fig.20. General View of Extension
Microphone
fig. 21. General View of Record Player Yfl
Fig 22. General View of Power?Supply
Switchboard
Fig. 2. 'General View of Intermediate
Transformer HT-9C
Fig.24. Block?Diagram oflaW*-150
Installation
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Pai;c
Fig.25, Connection Diagram of M1tTY45c
Installation
:eit;.26. Key Diagram of METY-15c
installation
Fii?;.27. Key Diagram 1 of MRTY-15c
Installation
List of Components . 77
Table of Transformers and Chokes
Winding Data WOO . insert
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Part I
DESCRIpTION_WD OPERATING INSTRUCTIONS
0
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1. GENERAL
1 1, Purpose
The MRTY-15c marine radio relay installation is
actually 'a rediffusion station intended for transmitting
commands and broadcast programs on shipboardx).
1 ? 2. Components
The main components of the installation are as follows:
1. Microphone posts (M.P.) MK-17A.
2. lleceiver?amTlifier unit (R.A.U.) MK-10A.
3. Power?supply switchboard (P.S.S.) MK-21A.
4. Electric record player.
5. Extension microphones of the Mil-13 type.
6. Loudspeakers of the 3rA-3mA and mApr-1 types.
7. Gain controls of the r-2 . type
8. Storage batteries of the 5-11KH-10. type.
9. Converters Amr-3.
10. pare parts and tools.
11. Technical papers.
The purpose and diaLram of each component are dealt
with in Section II of the present Album.
In earlier publications this equipment was cfurred
to as "intercommunication set",
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Note:
- 12 -
When a 110 - 127 or 220 V A.C. feeder is
available aboard ship, the MKTY-15C instal-
lation is not equipped with converters, a power-
supply switchboard or storage batteries.
1 - 3. General Charaoteristics
The installation provides for the following kinds of
transmission to be iffeeted through three loudspeaker
lines (both separately and together in any combination):
(a) transmission of commands and orders from; any of the
two microphone posts (Eoro) oyer the main Moro micro-
phones or extension microphones;
(b) transmizsion of announcements and local programs overall
extension mierllphone located in the radio relay room;
(c) tram5mission of broadcast programs (reception
from the ether or sound reproduction) from the receiver-
amplifier unit;
(d) transmission of broadcast program's over the crew
quarters loudspeaker line from a )0 V external rediffu-
sion net.
The installation ensures continuous trouble-free
operations'
(a) in conditions of high ambient temperature of up
to +50?C;
(b) in conditions of high relative humidity of up
to 95 per cent;
(c) after staying in conditions of low temperatures
(down to -40?C) for a long time;
(d) in conditions of vibration and jolt.
The components intended for operation on the upper
decks are of a waterproof design.
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13 ?
? 4. Operating Possibilities
Commands and orders can be transmitted from any of the
two microphone posts.
Broadcast programs are put through directly Trom the
radio relay room.
The amplifier supply sources, the microphone circuits
and the loudspeaker lines are turned on and off with the
aid of the appropriate remote switches at the microphone
posts or on the receiver?amplifier unit.
The broadcast programs are changed over from radio
reception to record playing and vice versa manually.
The installation ensures the primar;! of command
transmissions over broadcaSting by automatically switching
off the broadcast program as soon as the command transmis?
sion begins.
The microphone posts have no primacy over each other.
To avoid simultaneous transmissions from a microphone
post, the sighal ENGAGED (3A112TO) is automatically
applied to the non?operating microphone post as soon as one
of the posts is switched on for work.
The readiness of the installation for transmission
from the microphone posts is indicated by the signal READY
(Fmmo) at the appropriate post and by the signals ON
(BKAMEHO ) and ENGAGED on the receiver?amplifier unit.
The installation remote control, the primacy of
command transmissions over broadcast programs and the
signal system operation are ensured by a switching device
consisting of relays.
The volume of command transmissions is not control?
led; while a volume control is provided for broadcast
programs.
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To convey an urgent message, one of the lines (the
crew quarters line) is made up as a three-wire net. Urgent
messat;esaie conveyed from the microphone posts only.
Such a system makes it possible to Control the volume
of broadcast transmissions or to switch them off altogether,
but during command transmissions all the loudspeakers of
the crew quarters line operate at full capacity.
To convey urgent messages, special loudspeakers of the
3111-3MA type and volume controls of the Pr-2 type are
used which allow operation through a three-wise line.
As the installation is equipped with extension micro..
phones, it is possible to convey messages at a distance of
up to 6 metres from the microphones post.
To provide transmissions for the sick - bay, use is
made of headphones TA-4.
To facilitate the work of the operating personnel and
to speed up fault finding and removal of troubles, the
installation provides for:
(a) subjective monitoring of the transmission with
the aid of headphones across the output circuits of the
receiver, amplifier and outside rediffusion line;
(b) objective monitoring of the transmission with the
aid of a level indicator at the amplifier output;
(c) check of the plate currents passing through the
output valves.
The current being of an admissible value, the instru-
ment pointer should be within the appropriate coloured
sector;
(d) check of the mains voltage and the voltage across
the power source feeding the signal and automatic system
circuits.
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15
The voltage across these circuits is normal if the
Instrument pointer is within the appropriate coloured sec?
tar
;
(e) receiving the light and audio signal FAILURE
(ABAPMa ) when the amplifier is faulty (output valves are
out of order, the rectifier is defective) and when the
signal fuses in the supply circuits blow;
(f) receiving the light signal AMPLIFIER FAILURE
(GAPE MMAOTER2 ) when the am2lifier output valves are
out of order or in case of any other faults which cause
de?energizing of relay P1-3 (CPR);
(g) tuning the receiver by means of phones, and visual
Indicator.
When operated from a D.C. feeder, the installation
provides for manual switching on and change over of the
converters so as to ensure continual operation or an
additional charge of storage batteries.
1 ? 5. PoatELRLY_IILIIPLaatIlIaIlan
To feed the installation, a source of 110, 127 or
220 V, 50 c.p.s., one?phase alternating current is required.
A tumbler switch mounted on the power transformer is used
to switch the installation to such a source.
As indicated in their respective logs, all installa?
tions are factory?switched on to work from 127 or 220 V.
If an A.C. source is available aboard ship, the
installation is supplied from the ship's feeder or, when
the ship is at shore, from a shore?end A.C. feeder.
The installation can be switched over for work from
the ship's supply source or from the shore?end feeder by
means of switch B3-8 on the front panel of the receiver?
amplifier unit.
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In both cases the feeder is to be electrically coupled
to the power transformer mounted on the amplifier chassis.
The transformer maintaAns the rated voltage across the
apparatus, with the feeder voltage altering within +10 to -20
tier cent of the. rated value.
The installation can besupplied from a 110 or 220 V
D.C. source through power-supply set AMI'-3,.
The arrangement is equipped with two such sets operat-
ing alternately.
The power consumed from the mains:
0
1. Alteinating current-250 VA with cos 8?-0475.
2. Direct current-800 V.
The circuits of the automatic and signal systems are
supplied with 24 V direct current derived from selenium
rectifier BC-47 (714-1).
Olen the installation is supplied from the ship's D.C.
feede44 storage battery of four accumulator cells 5-HKR-10M
is cut in which is needed to start the arrangement and which
works in buffer with the selenium rectifier.
Men the installation is supplied from an A.C. feeder,
the selenium rectifier is loaded with a ballast resistor
of 100 ohms (R4-1) to reduce the voltage variation.
Electric and Electroacoustic
Characteristics
The rated output power of the installation is 15 VA.
The output voltage is 30 V.
The rated load resistance is 60 ohms.
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The coefficient of nonlinear distortions at a frequency
of 1000 cop's* and at the rated power is not more than 6
per cent. The installation electric circuits insulation
resistance with respect to chassis is not lower than 20
megohms for the sound circuits and not lower than 10 megohms
for the sound circuits and not lower than 10 megohms for all
the other circuits, with the ambient temperature being
*20?C 3?C and the relative humidity 65 t 15 per cent.
?
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2. BRIEF DESCRIPTION Ole THE INSTALLA-
TION COMPONENTS
2 - 1. Microphone Posts MK-717A
(Figs 4, 5 and 6)
The IETY-15c , installation set includes two micro-
phone posts MK-17A. They are assembled according to one and
the same diagram shown in Fig.270
The posts are of a waterproof design and are made ina
silumin-cast housing with covers. There are rubber gaskets
between the cover and the housing. The cover is secured toth
housing with four screws.
The cahle is pasSed into the housing through a gland
and fanned out on 16-pin terminal block fl5-1 fitted in-
side the ;ousing. biounted on the microphone post cover are:
a magnetic microphone M5-1 of the A3M-4 type, cam
switches MI of the K-22 type to switch the Installation
en and off, and lamps READY and ENGAGED. Plug connector
1115.4 serves to insert an extension microphone.
The overall diwensions'of the post:
Width 150 mm.
Height - 224 mm.
Depth - 125 min.
Weight - 3.5 kg.
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?19-
2 . Raceilier,Amplifier_Unit_MK-10A
(Figs 1, 2 and 3)
This installation consists of the following compo?
nents:
(a) Amplifier (MK-11A).
(b) Receiver (MK-12A).
(c) Central panel (MX-13A).
The body of the unit ,is made of angle steel in the
form of a rigid welded frame with a sheet steel skin which
is louvered for cooling,
Access to the parts and the wiring is'ensured by
pulling the front panel of the unit back and downwards.
All controls and signal lights are mouni'ed on the front
panel which is: the control panel of the receiver?amplifier
unit.
Selenium rectifier BC-47 and the bell are mounted on
the inner side Of the body back. Under the front panel, in?
side the body, on the left and right sides, there are four
interlocking contacts (two on either side) which instanta?
neously de?energize the installation when the control panel
Is thrown back for inspection and repair.
The terminal blocks for fanning out the cables are
mounted on the bottom of the body.
The-cables are passed into the body from below through
the two oval holes in the skin.
Anti?radar filter IL12-3 , is fitted in the right?hand
front corner of the lower wall.
The receiver and amplifier chassis are moved into the
irooves of the bracket, which is rigidly linked with the
control panel, and secured with screws.
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-20.-
The unit overall dimensions without shock absorbers
are:
qidth - 580 mill.
Height -.414
Depth - 347.5 mu).
Weight - 55 kg.
The body of the unit is secured to the bulkhead on six
shock absorbers of the 271C-3-25 type.
(a) Amplifier.
4)
Amplifier MK-11A is mounted on a chassis whose top
carries valves, transformers, choke and relays. All the
other parts and the wiring are inside the chassis.
For the key diagram of the amplifier see Fig,27.
Also mounted on the same chassis is the rectifier
which feee,s the plate and screen circuits of the amplifier
and receiver.
The amplifier has three stages designed to abplify low-
frequency voltage. The first stage employs resistors in
a push-pull circuit. Each arm uses halves of valves 311-1
and 311-3 of the Gila type, respectively.
The second stage employs a push-pull circuit of resis-
tors.based on the other two halves of valves .711-1 and
51-3, with a negative feedback. From a special winding of
the output transformer the feedback voltage is symmetrical-
ly, through dividers, applied to the cathodes of the
corresponding .Jalves. To balance the circuit according to
the amplification and the background noise compensation,
a potentiometer R1-26 is inserted between plate loads
R1-19 and R1-2, with the given stage plate voltage andied
to the mid-point of the potentiometer.
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21 ?
Resistor R1-26 10 adjusted when the amplifier is tuned
or its valves replaced. In case the background noise in?
creases, it can be reduced to a minimum with the aid of
headphones connected to the amplifier output.
The third (final) stage is a push?pull circuit employ?
ing two valves 11-2 and 211-4 of 'the 6R3C type, with
an automatic bias (at the expense of the resistance of relay
p1-3 winding) and a transformer output.
In the process of operation the secondary of the
transformer is loaded on the loudspeaker lines.
The cathode circuits of the final valves have by?pass
resistors 111-14 and R1-15 connected to instrument 14113-1i
The rectifier employs a full?wave circuit based on
valves 211-5 and A1-6 of the 5114C type, The like
electrodes of the kenotrons are connected in parallel.
The cathodes of the valves in the amplifier are
preheated, which ensures instantaneous readiness of the
installation for work.
The amplifier is equipp&l with a fault?si6nalling cir?
cuit to indicate failures in the amplifier or the rectifier
which de?energize relay P1-3 (CPB):
Vhen one of the amplifier valves is out of order, the
installation will go on operating but with lower electro?
acoustic characteristics.
The amplifier'MK-11A has the following electrical
parameters:
Sensitivity ? 12+2 mV.
Output power rating ? 15 VA.
Output voltage rating ? 30 V.
Coefficient of nonlinear distortions at a frequency of
1000 c.p.s. and at the rated power is not more than 654
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-22-
Pass-.band at an irregularity of t40% with respect to
3.000 cep's. is not narrower than 200 - 4000 cip.se
Increase in the output voltage,with the load resistance
ten times as much as the rated value, is not more than 40%.
The operating voltages of theamlifier valves at the
rated supply voltage should correspond to the following
Table:
Voltage, current or
power
Plate voltage Ep
Oereen grid
:voltage Eg2
Bias Voltage Ebl
Plate current Ip
(through one arm)
Plate dissipated power
Unit of
measu-
rement
Stage and
ype of valve
I(GW)
110-150
-1-2
0,25-04.4
"=;. 1
ii(6H211)
1 0-230
-1-2
0.5-1
<
III (6114c
380-430
250-290
-21-25
40-57
. 20.5
The Plate currents are checked by mean.-_, of the coloured
sector on the instrument of the receiver-amplifier unit,
. (b) Repeiver
Receiver MK-12A is a five-valve superheterodyne
(Figa7). Antenna filter r4,1 of the R310-3 type ia
connected to the receiver input to suppress radio inter-
ference from radarinstallations. The antenna circuit has
neon lamp H12-1 of the MH-3 type to protect the receiver
k;ainst any considerable high-frequency voltages, and a
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rejector tuned to 435 Rc/s to suppress interference at
frequencies close to the intermediate frequency.
The first valve, a pentagrid of the 6A7 type, is at
the same time a heterodyne and a mixer.
The tuning to the received signal and heterodyne frequency
tuning are effected by means of a variable gang capacitor.
The first intermediate?frequency filter is in the
plate circuit of valve 6A7. In all there are three such
filters which are tuned to the intermediate frequency of
435 Kc/s.
The I.P. amplifier has two stages and operates on
valves 6E3,
The multiple valve 6P2 .functions as:
(a) second detector,
(b) automatic volume control detector,
(c) receiver low?frequency amplifier)
(d) cathode follower for connecting the high?resistance
pickup to the amplifier input,
In the grid circuit of this valve there is a potentio?
meter R2-16 to control the volume of transmissions. The
detector load circuit has a step band (tone) control B2-2.
jhen interference increases, turn the control knob to
NARROW BAND (Y3KA9 HOAOCA ). The receiver is equipped with
visual tuning indicator 6E5C. Power supply for the receiver
is derived from the common rectifier of the receiver?ampli?
fier unit.
The receiver is designed to receive local and distant
radio stations on the following wavebands:
(a) long y:avehand 130 ? 380 Kc/s (2300 ? 790 m.);
(b) medium waveband 490 ? 1450 Itc/s (615 ? 208.m.);
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?24?
(c) short waveband I 2.,7 -0'8 1e/s(la2.-
(d) short waveband /I 8 - 13 litis 070 .., 23 m).
The receiver design ensures reliable operation in
heavy weather and mechanical conditions (humidity, tempera-
ture, vibration, jolts, etc!).
The.basic electrical characteristics of the-.receiver
are as follows:
(a) plate voltage 260'V;
(b) filament voltage - 6.3 V;
(c) plate current - 30 mA;
(d) filament current- 1,5 A;
(e) sensitivity at the adapter input at a frequency
of 1000 c.p.s. is 0.35 V;
(f) receiver sensitivity on all wavebands is not
lower than 4016V (with the ratio of the signal voltage to
the noise voltage being 5)j
(g) graduation accuracy - 4%;
(h) image attenuation is not lower than:
30 times for long and medium waves;
5 times for short waveband I;
3 times for short waveband II;
(i) selectivity of the receiver at 4- 10 Kc/s
separation is not less than 60 times at frequencies of 200
and 1000 Kc/s;
(j) intermediate-frequency band of the receiver
at two times attenuation is not narrower than 7 Kc/ si and at
100 times attenuation-nrA wider than 22 Kc/s.
The operating voltarJes of the receiver valves should
be as follows:
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Type of valve
and its
desiL:nation
in diaLram
-----,
Voltage, V Current mil.
Current,
?__
1-
Ef
Ep
Egl
Eg2
If
Ip
GAT-Jf2-1
6.3
221
93
0.3.
3.9
G1{3-13-2
6.3
230
1
30
0.3
3
6M-112-3
6.3
172
3
99
0.3
8.8
6r2-A2-4
6.3
190
1.5
-
0.3
1.03
61,15-,712- 5
6.3
57
2.5
0.3
1.6
(c) Control Panel (M1C7134)
1g2
.35
0.77
.35
O.!
This is designed as a face panel :of the receiver-
amplifier unit.
It has three fixed positions:
(a) working (or closed) position;
(b) first unfolded position ? 70? from the Working
position.
In this position the receiVer?amplifier unit 13 de?
energized which makes it possible to Toplace valves, to
make an external inspection and adjustment of relays. This
position is fixed with two side rods.
(c) r;econd unfolded position ? 180? from the working
position.
In this position, safe access is made to the wiring
and parts of the amplifier and receiver.
For the key diagram of the control panel see fig.27.
The panel comprises the following elements:
1. Three 6 s)ring roller sw1tches33-4 (combat louqspeake=
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?
Type of valve
and its
desisnation
in diasram
--------,
Voltage, Current, mA
Ef
Ep
Eg1
Eg2
If
Ip
?.
r1
to ? ? ? o ?
0 0 0 0 0
GA7-312-1
6.3
221
93
3.9
61t3-113-2
6.3
230
1
30
3
612-A2-S
6,3
172
3
99
8.8
Gr2-A2-4
6.3
190
1.5
?
1.03
6115-A2-5
6.3
)57
2.5
1.6
(c) Control Panel Qa-13A)
1g2
.35
-477
2.35.
???I
4.111?
This is designed as a face panel of the receiver?
amplifier unit.
It has three fixed positions:
(a) working (or closed) position;
(b) first unfolded position ? 70? from the working
position.
In this position the receiver?amplifier unit is de?
energized which makes it possible to replace valves, to
make an external inspection and adjustment of relays. This
position is fixed with two side rods.
(c) Second unfolded positiOn ? 180? from the working
position.
In this position, safe access is made to the wiring
and parts of the amplifier and receiver.
For the key diasram of the control panel see fig.27.
The panel comprises the following elements:
1. Three 6 spring roller switches 33-4 (combat loudspenker
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?
-26-
line ), 113-5 (crew quarters loudspeaker line) and B3-6
(upper deck loudspeaker line) to operate directly from the
reeciver-amplifier unit.
serves to change over from the
? Cam switch K-3 (83-8)
ship's to the shore-end feeders and has a neutral position.
3. Automatic system elements: relay P3-1 (MPR) to work
from the microphone posts: P3-2 (BTR) to operate directly
from the receiver-amplifier unit; loudspeaker system relays:
P3-3 (LiA-1) - combat lines P3-4 (LI-2) - crew quarters
1ine4 R3-5 - upper deck line.
4. Elements for monitoring the sound channel by means
Of headphones:
socket r3-2 in the receiver output circuit;
soctet 1'3-5 in the amplifier output circuit;
socket r3-4 in the outside rediffusion line.
5. Socket r3-1 for broadcast transmissions over an
extension microphone of the receiv:r-amplifier units and
socket 113-s in the amplifier input circuit to check the
work of the input switching system.
? 6. Tumbler, switches: B3-2 switch to cut in the power
supply for the receiver; B3-7 switch to turn on the out-
side rediffusion. ?
7. MICROPHONE - RECEIVER ( MUTOMii-MEME)
function switch 83-1 for broadcast transmissions.
8. Signal system elements: pilot lamp 1H3-5 ON;
pilot lamp 3IH3-6 - READY; pilot laav AHB-2 - ENGAGED;
pilot lamps AH3-6 -C MHAr (BOEBAR); 31113-7 - CREW
QUARTERS ( MATPOCCUR ); 3111378-,-, UPPER DECK ( BERM 11050
These operate when transmissions tire put through from the
receiver-amplifier unit.
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?
27
9. Xlements of, the failure-signalling system: pilot
lamp 'FAILURE (ABAPPiii YCNAMTEXH )
pilot lamp NS-I- FAILURE (ABAPP12) indicates that the
installation is faulty;
tumbler ;.witch 133-3 serves to cut off the bell for the time
the fault is being sought for and cured.
10. Check meter M113-1 of the N[47-2 typo serves to check:
plate currents in the amplifier output valves, mains Voltage:
audio-frequency output voltage, voltage in the signal and
automatic system circuits according to the appropriate
coloured sectors on the meter scale.
To prolong the life of copper-oxide cell A1-1, the
switch should be set to the mid-position after -each measu-
rement of alternating Voltages.
11. Elements of the electric protection system are as
follows: signal fuse Hp3-1 in the receiver filament circuit;
signal fuse 11p3-2 in the selenium rectifier circuit (-)
for 24 V;
signal fuse
signal fuse
signal fuse
fier and receiver;
signal fuse 110-6 it the +24 V circuit of the storage
battery;
signal fuse 43-11 in the,--,127 V circuit of the phono-
graph motor;
fuses 111)3-B and np3-10 of the HH-43 type in the ship's
A.C. feeder circuit;
HK-43 type in the
fu3us npS-7 and 11p3'-9 of the
shore-cud A.C. feeder circuit.
11p3-3
in
the +24 V circuit of MP-1;
np3-4
in
the +24 V circuit of MP-2;
11p3-5
in
the rectifier circuit of the ampli-
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? 28 ?
12. Connection plugs E3-1 and W3-2 for inserting
the sound pickup or phonograph motor.
2 - 3. Power-Supply awitchboard MK-21A
(Fig. 22)
This is designed to ensure:
(a) automatic connection of the converters to the
ship's D.C. feeder circuit when operating from the micro-
phone posts or the receiver-amplifier unit;
connection is accomplished by means of the groups of
relays P7-1, P7-2, P7-3, P7-4 or P7-5, P7-6, P7-71 P7-4;
(b) starting of the converters for additional charging
Of storage batteries, which is accomplished by switches
B7-1 or B7-2 on the board;
(c) changing-over of the converters for alternate
operation by means of switch B7-3;
(d) electric proteetion of the ship's D.C. feeder with
the aid ,:,f.fuses:
47-447-2, 47-3 and HP7-4 of the nB type.
Por the key diagram of the switchboard see Fig.27.
The overal dimensions of the switchboard without shock
absorbers: ,
Width - 220 mm.
Height - 335 mm.
Depth - 152 mm.
Weight - 9 kg.?
2 - 4. laectric Record Player
(Fig.20)
The universal electric record player allows playing of
ordinary and long-playing records. The pickup of the record
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player has a detachable head with two permanent needles: one
for conventienal and the other for.long-fplayin8 records.
The Ufe of each needle is 150 hours if properly used.
The pickup has the following parameters:
1. Sesit1vity at 1000 c.p.s. and at a load of one
megohm is not lower than 70 my (for an oscillatory speed of
1 cm/see.),
2. Band of reproduced frequencies is 50 to 10000 c.p.s.
The record player is supplied from 127 or 220 V mains, It
is changed over to the required voltage 'ay means of the
block under the disc.
2 - 5, Headnhones
The installation is equipped with electromagnetic head-
phones of the TA-4 type.
One pair of headphones is used ip taming 'the receiver
and in checking the sound channel and the outside rediffu-
sion net.
The cord of this pair of headphones is fitted into a
two-conductor plug.
The cords of the other headphones are fitted into two-
plugs,
The weight of a pair of headphones is 0.4 kg.
2 - 6, aRMEiljr2iLtILI/LY
Thin i tnnllesi for remote switching of the installa-
tion and for feeding the signal and automatic system circuits
when operating the installation from the ship's D.C. feeder.
The batter- works in buffer with the selenium rectifier.
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- )0 -
The installation is equipped with four alkaline stor-
age batteries of the 5-HKH-10M type connected in parallel.
The battery weighs 15.6 kg (without electrolyte),
2 - 7. Lqpdspeakerq
(a) Cone Moving:Coil Loudspeaker .of_the_ apa7aq Type_
This is designed to serve the chins, crews
quarters and other enclosed space.
The loudspeaker can be used with a separate volume
control of the Pr-2 type or without it, depending on
where it is suuposed to operate and the need to control the
volume of messages put over it.
For the general view of the loudspeaker and its compo-
nents see Figs 7, 8 and 9.
Electrical Parmeters
_
J. Rated power - 3 VA.
2. and of reproduced frequencies - 150 to 6000 c.p.s.
3. Irregularity of the frequenc characteristic over
the band of reproduced frequencies is not more than 8 times.
4. Mean sound pressure develoied by the loudspeaker
within the frequency range of 150 to 6000 c.p.s. at a dis-
tance of one metre and at an input power of 0.1 VA is not
les than 2,6 bars.
5. Coefficient of nonlinear distortions at a frequency
of 1u00 c.p.s. is uot more than 7%4
6. Rated voltage - 30 or 60 V.
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- 31
7. Alen operated from a 30 or 60 V line; the loudspeaker
can be adjusted to consume one of the following power v:',,lues:
0.1 VA; 0.5 VA and 1 VA.
8. The induction in the magnetic system air gap is
9000 gausses. The loudspeaker is enclosed in a metal hous-
ing which, however, does not protect it against the effect
of sharply changing air pressure or the penetration of
water in case of rain or stormy sea.
The 'basic components of the loudspeaker are:
1. Loudspeaker head.
2. Tapped transformer.
Metal housing,
The loudspeaker bead comprises a magnetic circuit with
a permanent magnet made of _luminium-nickel alloy, a
diffuser holder and a moving system.
The moving system consists of a waterproof cast diffus-
er, a speech coil and a centring device. The latter is design-
ed to centre the coil in the magnetic circuit gap and con-
sists of a corrugated paper centring washer and a metal
bridge bracket.
In the centre of the diffuser is glued a cap to prevent
moisture and dust from getting on the voice coil and:_the
magnetic circuit gap. Tapped transformer TB-130 has a
plate to adjust the loudspeaker to the required voltage and
power.
For the transformer winding data see Album No.2.
The transformer is enclosed in a metal screen filled
with heat-resistant compound. The loudspeaker can be adjusted
for the required voltage and appropriate power according
to the circuit diagram on the inner side of the housing
cover.
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? 32 ?
The loudspeaker housing has a detachable cover. By
means of a'baffle the body is divided into two sections to
:house .the loudspeaker head and the transformer with a Con?
tact plate.
The loudspeaker head is secured to the inner side of
the detachable cover which has holes covered with wire gauze.
The loudspeaker frame has three attachment lugs. The
cable from the loudspeaker line is passed through a special
hole in the transformer section of the housing,
The design data of the loudspeaker are as follows:
Width of the air gap in the magnetic circuit ? 1 mm.
Number of turns on the voice coil ? 60.
Type and diameter of conductor ? 0.16 mm wire of the 113)1
type.
The voice coil direct current resistance ? 3.25 ohms.
Weight of the diffuser ? 2.5 gr
Diameter of the diffuser ? 147 mm.
;eight of the permanent magnet ? 580 gr
Overal dimensions of the loudspeaker:
Height ? 289 mm.
Width 174 mm.
, Depth ? 122 mm.
Weight ? 4.2 kg.
(b) Gain_Control_of.the. P1'-2 .22.ype
(Figs 13 and 14)
Loudspeaker 3M-3MA can be used with gain control PP-2
or without it.
The basic components of the gain control are as follows:
1. Tapped tra.nsformer.
2. Switch.
3. Metal housing.
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The winding data of the gain control transformer are
similar to those of the transformer employed in loudspeaker
3M-MA , with the only difference that its secondary wind?
ing is tapped.
The gain control is designed to be connected to the
loudspeaker at normal voltages of 30 or 60 V, the power
consumed being 0,1 VA 0.5 VA, 1 VAJor 3 VA.
The gain control switch is a nine?step arrangement with
a position in which it fully disconnects the loudspeaker
from the line.
The basic parameters of the gain control are as follows:
Number of control positions ? 9
Max/min. control ratio ? 22
Overall dimalsions:
Height ? 175 mm.
Width ? 110 mm.
Depth ? 116 mm.
Ideight ? 1.8 kg.
(c) Horn_Movin.T-Coil Loudspeaker of the ma1'-1
Type_
(Figs 15 16, 17 and 18)
This is intended to serve open decks and noisy premises
aboard chip.
Electrical atrameters
1. 2ated power ? 10 VA.
2. Band of reproduced frequencies is .500 to 50,000 cip!,
3. Irregularity of the frequency characteristic over
the given band of frequencies is not more than 18 decibels.
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4. Mean air pressure at a distance of 1 metre from the
loudspeaker and at =input power of 0,1 VA is not less than
10 bars.
5. Coefficient of nonlinear distortions at 1000 c.
is not more than 10%,
6. Rated input voltage ? 30 or 60 V.
7. Number of turns on the voice coil ? 53.
8. Voice coil conductor ? 0.15 mm wire of the rim
type.
9. Voice coil resistance ? 6.6 ohms.
The loudspeaker consists of three main components:
1. Loudspeaker head.
2. Impedance?matching transformer.
3. Curved silumin horn.
The loudspeaker head comprises a magnetic circuit with
a permanent magnet Made of the nMagnikon alloy, a moving
system and a pre?horn chamber with a cap.
The moving system comprises a compacted textolite di.:,..-
phrat;m with lead buses pressed between its layers, and rt
voice coil wound on a percale former impregnated with
P-2 glue.
To reduce its dimensions, an exponential curved horn
is used in the loudspeaker.
To protect the moving system ,-gainst the effect of
sharply changing air pressure, there is a "labyrinth" in
the cylindrical hole of the pre?horn chamber, while on the
end horizontal plane of the maL;netic circuit base, under
the central surface of the diaphragm, is mounted the damper
of the moving system.
The loudspeaker curved horn has an outer and an inner
section. On the truncated side surface of the horn is instal-
led a case to accommodate the transformer in a screen with
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?35?
a contact plate. To the base of the horn outer section is
fitted a stand which has three lugs with holes to attach
the loudspeaker to the required place.
The head of the loudspeaker is fitted in the inner
section of the horn by means of a threaded boss at its in?
put hole.
Impedance?matching transformer TB-87 has a tapped primary
winding and is designed to connect the loudspeaker to an
audio?frequency voltage line of 30 or 60 V to consume 1) 3; 5
or 10 VA.
The loudspeaker can be made to operate on one of the
said voltage and power values with the ?Ad of the engraved
j
contact plate on the transformer.
The primary windirg sections of the transformer rela?
ting to the input voltage of 30 V and the power of 3, 5 and
10 VA are tapped in their mid?points.
A special table is secured to the inner side of the
transformer case cover CGS aguide in cutting?in the loud?
speaker.
qhen in operation, the leudspeaker should be mounted
on shock abserbers.
The loudspeaker can work:
(a) at an ambient temperature of ?40 to 4-80?C;
a'.relative humidity of 950 t 3';4
(e) In Conditions of stormy weather and rain;
t conditions of mechanical knocks and Tibration.
The.cable lead is passed through glands.
Overall dimensions:
Height ? 308 mm.
Width ? 264 mm.
Depth ? 212 film:
? 6 kg.
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36
2 ? 8. Spare Equipment
The spare equipment su MKTY-15c
with the in-
stallation is kept in the following boxes:
1. Box MK-24 for the combat set.
2. First priority box MK-25 for spnre valves, parts
and moving systems.
3. First priority box MK-26 for tools.
4. First priority box for instrument TT?l.
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?
3. OPERATION OF THE MRTY-15C INSLILLATION
Fig.26 represents the key wiring diagram of the instal?
lation 1:210 T;peoifications to this darn are sivara at the
end of thts booK4
To bludy the diagram, consider specific examples
illustrating the work of the installation.
3 ? 1. General Instructions
A. In the diagrams and descriptions of the installation
its elements are indicated by letters.
The position of any element is indicated by its letter
symbol (for instance, resistor ? RI capacitor ? CI relay ? Pt
etc.), the serial number of the unit in which the given ele?
ment is located and the serial number of the element in the
given unit.
For instance, P7-3 means the third relay in the seventh
unit; 113-1 means the first resistor in the third unit4
0
B. Relay symbols:
MPR ? microphone post relay.
BTR ? broadcast transmission relay.
LLR ? loudspeaker line relay.
FSR - failure?signalling relay.
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-38-
CPR ? common plate relay.
SSR ? supply switching relay.
TR ? thermorelay.
C. Abbreviations used in the description:
RAU ? receiver?amplifier unit.
MP ? microphone post.
PSS ? power?supply switchboard.
3 ? 2. Operwtion of the Installation when
Supplied from the Ship's
Feeder
Consider the three state6 of the installation:
h. Readiness for work.
B. Transmitting comLnds from
C.'Relaying broadcast progratz; from RAU.
A, Readiness for Work
In this state the voltage of the ship's A.C. feed3ris
applied to the primary of power transformer Tp1-3 through
the closed contacts of interlocks B4-2 and B4-41 fuses
43-10 and 41.8 and closed contacts 8, 7, 6 and 4,31
2 of switch B3-8 (shore?end feeder ? shipls feeder). httt.i
time tumbler switch B1-2 (110 ? 220 V) and change?over
switch B1-3 (voltage regulator) should be set in positions
corresponding to the ship's feeder voltage. From the seem:,
ry of transformer Tp1-3 the voltages are applied to the
following circuits:
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39 -
(a) from load 25 - 26 the voltage of 3 V is applied to
the filament of kenotrons A1-5 and A1-6 of the 5D4C type;
(b) from leads 13 - 14, via contacts 11-12 of relay
P1-4 (SSR), 3.5 V is fed to the filament of amplifier v:.1-
ves Xi-1 and M-4.
No plate voltage is applied to the amplifier, for the
high-voltage circuit is broken between contacts 22-23 of
relay P1-4 (SSR);
(ct,) from leads-16 18 of transformer Tp1-3 30 V is applied
to feed selenium rectifier 70-1 of the BC-47 type. From the
rectifier the rectified voltage Of 24 V is fed to ballast
resistor R4-1 and via circuit No.1 to relay P3-2 (BTR) which
oper,tes and make the circuits ready to switch on the
j
installation from the receiver-amplifier unit.
Circuit No.].t'
-24 V of the selenium rectifier, fuse 110-2 ? lead 1 in
the winding of relay P3-2 (BTR), lead 2 in the winding of
relay P3-2, closed contacts 13-14 of relay P3-1 (MPR), +24 V.
B. Transmitti
Comm nds from MP
Consider to cases of transmitting commands from MP:
throughthe combat line and through the crew's quarters line.
To transmit commands through the combat line, turn
switch B5-1 (COMBAT ) -to the right. At this moment relay
P3-1 (MPR) in circuit No.2 (See below) will operate, whose
contacts will do the following: contacts 22 and 32 will cut
iv the microphone circuit of the post; contacts 13 - 14 will
sconnect circuit No.1 (See above) and the RAU READY
signal cirduit and cut in the :ENGAGED signal circuit of the
receiver-amplifier unit.
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Contact 12 cuts out relay P3-3 (1,114) by moans
of the receiver-amplifier unit switch. Since circuit No$1
is broken after relay P3-1 is cut in, relay P3-2 (BTR)
opens and its contacts 14 and 34 cut out relays P3-4 (LI,R-2)
and P3-5 (1,1B-3) by means of the RAU switches. Connections
established by other contacts of relay P3-2 are of no
importance in this case.
Circuit No 2:
-24 V of the selenium rectifier, fuse Hp3-2, lead 1
in the winding of relay P3-1 (MPR), lead 2 in the winding of
relay R3-1, closed contacts 4-3 of switch B5-10 fuse 43-81
(fP-1), +24'V.
After switch R5-1 is turned on, +24 V from the selenium
rectifier will be applied to the lamp READY of the operating
post and the lamp ENGAGED of the parallerpost,via con-
tacts 6-5. +24 V will also be applied to lead 2 in the
winding of relay P3-3 (LLR-1) via contacts 2-1 of svitchB5-1
(-24 V will constantly be applied to lead 1 of the winding),
.it this time relay P3-3 operates and pilot lamp AH3-0
( COE.TIAT ) connected in parallel with its winding lights up.
/hen relay ?3-3 operates, its contacts make the follovi-
ing
Contacts 21 and 31 connect the combat loudspeaker
line to the amplifier output (contacts 7 and 8) of output
transformer Tp1-21 while contact 11, after closing contact
121 supplies -24 V to:
(a) the ENGAGED signal circuit;
(b) lead 1 in the winding of relay P1-4 (SSR);
(c) contacts 12-22 of relay P1-3 (CPR).
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Relay P1-4 (SSR) operates and its contacts 22 and 23
complete the high-voltage circuit while contact 12 changes
over .he amplifier valve filament circuit from the lower
voltage (3.5 V) to the rated voltage. So after relay P1-4
(SSR) operates, the rated operating voltages are applied to
the electrodes of the amplifier valves. The amplifier is ready
to work auproximately one second after any of the line
switches is turned on.
When plate voltage is applied to the valves of the
amplifier, current begins to flow through valves 311-2 and
41-4 of the GMC typelso causing relay P1-.3 (CPR), in-
cluded in the cathode circuit of these valves, to operate.
Contacts 13 and 23 of relay P1-3 are used to apply signals
READY and ENGAGED,
From contact 13 the voltage of -24 V is applied to the
lamps READY and ENGAGED at the microphone p sts, while from
contact 23 it is fed to lamps 71113-2 and 31113-3 (READY
and ENGAGED on the receiver.4amplifier unit).
Consequently, the signals indicating that the installa-
tion is ready or engaged are applied only when the final
stages and supply circuits of the amplifier are operative,
for otherwise (for instance, when both final valves or both
kenotrons are out oforder) the winding of relay P1-1 will
be de-energized. In this case the circuits of the failure-
signalling system will be cut in. The work of these cir-
cuits is dealt with under Failure-Signalling System.
After the lamp TADY lights up at the microphone post,
press foot switch B5-4 or switch D5-5 of the extension
microphone and begin transmitting.
The forwarding of command transmissions through the
crew's quarters loudspeaker line difters from the above case
in the following:
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As was stated above, loudspeakers 3PA-3MA with gain
control p1-2 are connected to the crew's quarters line
as a three-wire system.
Alen commands arebeingput over, the primary inding
of gain control PP-2 is short-circuited through closed
contacts 21-22 of relay P3-2 (BTR) and 15-14 of relay P3-4
(LLR-2).
Since the primary of gain control Pr-2 is shorted,
its secondary offers a very low resistance to audio-frequency
currents, owing to which the c;ain control for broadcast
transmissions is inoperative; the transmission voltage is fed
from the amplifier output to wire "K" of the line throuh
contacts 31-32?)f relay P3-2 (BTR) contacts 22-23 of relay
P3-4 (LJR-2) and to wire "0" of th lino through contacts 32-33
of relay 23-4 (LIR-2)p Gain in this case ia at a maXimum and 1-8
controlled,
Transmission of commands over the upper deck line in no
way dif2ers from that over the combat line.
C. Relszrinf, Broadcast Proarams from RAU
Consider relaying of broadcast programs over the combat
and crew quarters lines.
After the installation is prepared for operation as
stated under paragraph A above, one can start relaying
broadcast programs.
To forward such programs through the combat line by
means of an extension microphone of the receiver-amplifier
insert the plus of the extensi.on microphone in
EICROPHONE (MBP0All ) 500ketr3-1;
turn IICROPHONE - RECEIVER function switch B3-1 on the
RAU panel to ,iICROPHONE;
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?43?
turn switch B3-4 to COMBAT.
AS a result, the microphone 'circuit will be connected
to the amplifier input via contacts 1-2 and 7-8 of switch
B3-11 21-22 and 31-32 otrelay P3-1 (MPR) and contacts 1-2
and 3-4 of socket r3-3.
In the circuit: +24 VI closed contacts 5-6 of switch
83-4, closed contacts 12-11 of relay P3-1 (released), lead 2
of relay P3-3 (LLR-1), -24 V, relay P3-3 operates and pilot
lamp 3IH3-6 connected in parallel with its winding lights up.
Al; contacts 11-12 of relay P3-3 close, pilot lamp
AH3-5 ON (BK31104EHO ) lights up and relay P1-4 (S811)
cuts in, which by closing its contacts feeds the ,ratod supply
yoltagt.yhe. installation.
.current, passing through relay P1-3 (CPR),
cuts it IpiClosingcof contacts 22-23 in relay P1-3 connects
pilot lampOU1378 READY in parallel with the winding of
relay 133,72.(BTR).
?
Themplifier output is connected to the line via
closed contacts 22-,21 and 32-31 of relay P3-3 (LIR-1).
When rediffusing programs picked up by the receiver,
turn MICROPHONE - RECEIVER function switch 83-1 to RECEIVER,
i.e. connect the receiver output to the amplifier input
via the closed contacts of RECEIVER OUTPUT (BUXOA IIPAMHONA)
socket r3-2 , contacts 5-6 and 11-12 of switch B3-1, 21-22
and 31-32 of relay R3-1 (MPR) and contacts 1-2 and 3-4
of rsocketr3-3.
To play phonograph recordsl-insert the pickup plugs in
the PICKUP ( 313YROCH1'MATEAL ) socket on the receiver-ampli?
fier unit, and the motor supply cord in the WTOR '?.1 127 V
socket.
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Turn tone control B2+2 to PICKUPytherebroonneettng the pickup via
contacts 1+5 to the grid of valve 6r2 in the receiver out-
put stage. The -audio-frequency voltage developed
by the pickup is fed from the receiver output (cathode load
resistor 112-14) to theamlifierinput vi contacts 1-2 and
3-4 of socket r3-2, 5-6 and 11-12 of switch B3-1, 21-22 and
31-32 of relay P3-1 (MPR) and 1-2 and 3-4 of socketr3-3.
The amplifier output, as in the case of operating from
the RAU microphone, is connected to the line via closed
contacts 22-21 and 32-31 of relay P3-3.
When broadcast programs are relayed over the crew
quarters line through the'ez7tension microphone of the re-
ceiver-amplifier unit, from the receiver or the phonograph
pickup, the.amplifier input circuits are switched in the
same way as in the case of broadcast relaying through the
combat line.
Uhen switch 133-5 is pressed, relay P3-4 (ILR-2) in-
cluded in the circuit: -24 V, the winding of relay P3-4,
closed contacts 15-14 of relay P3-2 (BTR), closed contacts
6-5 of stitch B3-5, +24 V, will operate and pilot lamp
31.13-7 connected in parallel with relay will light up.
Closing of contacts 35-34 in relay P3-4 (LI2-2) will
cause lamp 31113-5 ON to light up. Relay P1-4 (SSR) and
relay P1-3 (CPR) operate the latter connecting lamp 31113-3
in parallel with the winding of relay P3-2 (BTR).
In broadcast relaying over the three-wire line, the amplifier
output circuits are switched as follows: the primary of the
transformer in loudspeaker 3IA-3MA is short-circuited via
closed contacts 23-22 of?relay P3-4 (LLR-2) and contacts
.3-33 of relay P3-2; the audio-frequency voltage it fed from
the amplifier output via contacts 33-32 of relay P3-4 to wire
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"0" of the line and via contacts 23.-22 of relay P3-2 and
contacte 14-15 of relay P3-4 to wire ITI" of the line.
To distribute broadcast programs through the crew
quartets loudspeaker line from a 30 V outside rediffusion
net, it is recessary to release relay P3-4,
When tumbler switch B3-7 is turned on, the voltage from
the outside rediffusion net is applied to wires HO" and "Fe
of the cre%I quarters line via contacts 13-14 and 31-32 of
relay P3-4 (LLR-2).
Wires HOH and "Ku of the line are short-circuited
through contacts 31-32 and 21-22 of relay P3-4.
3 - ljailureSignalling System ,
This system operates in the following.easeo of abnormal
work of the installation:
(a) when there is no plate current through relay P1-3
(SSR);
(b) when any of the signal fuses blows;
(c) when relay P1-3 (CPR) is de-energized, thermorelay
P1-1 (TR) cuts in via the following circuit: -24 V, con-
tacts 12-11 of relay P3-3 (LLR-1), if transmissions are put
through the combat line, contacts 12-11 of relay P1-3,
contacts 12-11 of relay P1-2 (FSR), lead 3 of relay P1-1
(TR), lead 4 of relay P1-1 (TR), +24 V.
uhen the thermorelay operates, its contacts 1 and 2
will close and cause the ,iMPLIFIER FAILURE lamp to light up
and relay P1-2 (FSR) to operate.
When relay P1-2 (FSR) operates, its contacts 11-12 will
open and thermorelay P1-1 (TR) will be de-energized; -24 V
will, through contacts 12-13 of relay P1-2, be applied to
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LVL .n hint P'466 ottOktrAa er ? to the line accord?
inG to the connection diagram, it can be -djusted to consume
1, 3, 5 or 10 VA, the voltage across the loudspeaker lines
being 30 or 60 V.
(b) Loudspeaker 3rA-''MA can he used with the gain
control of the Pr-2 type or without it
.hen the loudspeaker is used without the gain control
(Fig.10)t the taps of the loudspeaker transformer primary.
are coupled to contacts 1-.43 of the contact plate. The taps
of the transformer secondary are coupled to contacts 14 and
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150 while the leads of the.voice coil are connected to
contacts 14 and 16.
There axe etxcuit diarxams for loudspeaker
sr:,-;smA with gain opntrol Pr-z employing a two?wire
and three?wire' system (Figs ,11 and 12).
(c) Headphones TA-4 arel insertea in the line via
Intermediate transformer 11T-96 (Fig.23) which is supplied
with the installation, '
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OPERATING MAINTENANCE
4
General
The serviceability of the installation is dependent
on the way it is operated.
The operatThg personnel shoul.dbe guided in its work
by the instructions set out in the present Description on
how to put transmissions through and to maintain the instal-
lation,
Location and elimination of serious faults which re-
quire unsoldering or replacing parts can be done only by
persons who Low how to use key and wiring diagrams.
2. Preventive Inspection and.
Measurements
(a) Attendance of the Automatic and .Signal Systems
A???1 mr? ???? ????? air1
The serviceability of the installation largely depends
on the regular attendance of the circuits of the automatic
and signal systems.
Before checking these circuits, make sure that the
controls on the installation are in proper positions and
that there are no emer3ency signals.
. When the installation is ready for work, its controls
should be in the following positions: the feeder switch in
the operating feeder position; all the other switches on
RAU and MP (except the BELL OFF (NKTMEHNE SBOHNA)tumbler
switch) - in the neutral or OFF position.
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All relays, except P3-2 (BTR), are de?energized.
The following signals indicate normal operation of the
automatic and sighal systems.
1. When the installation is switched on from MP:
(a) READY at one MP;
. (b) ENGAGED at the other MP;
(c) sighals ON, ENGAGED, COMBAT, CREW QUARTERS or
UPPER DECK on the control panel of the receiver?amplifier
unit, depending on which line is in operation.
2, When the installation is switched on from the re?
ceiver?amplifier unit:
(a) READY, ON, COMAT, CREW QUARTERS, UPPER DECK)
all ata time or separately;
(b) ENGAGED on the control panel of RAU when the
broadcast program is cut off by a command transmission from
MP. In this case the signal READY on the control panel should
go out.
3. The following table rplains the signals as regards
Li
various faults.
Fault
Signal on control panel
of RAU
-
NO
p3
_A
.,.
r..4
,
1
i d/IPLIFIER
FAILURE
.
CA
M
,
234
5
,
6;7
1,
Two valves
order
6143C
?
out of
+
+
+
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ow.
2. Two valves 51A4C out of
order
3. One of the signal fuses
43-11 43-8 and
Hp2-4 burnt out
4. Fuse 11119-2 burnt out
5. Fuse 43-5 burnt out
6. One Of the fuses 43-7
ups-10 burnt out,
or the feeder is de?
energized (with the
installation sup?
plied from A.C.
ma?ns)
7. One of the fuses-
43-7 q. 43-10;
HP7-1+47-4 is burnt
out, or the feeder',_
is de?energized
(with the instal?
lation supplied
from D.C. mains)
+ indizates presence
2 3 4
+
?=1"
of the signal
5
+
? indicates absence of the signal
(b) Attendance _of the IlmIlifier and Receiver
The serviceability of the installation depends to a
large extent on the condition of amplifier MK-11A; therefore,
it is necessary to check periodically its mode of opc!ratirn.
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If the installation is not switched on from MP, switch it on
from RAU. On obtaining the light signals RhiiDY and ON, check
the plate current of each valve by means of the RAU change?
over switch and meter. This should be done when no transmis?
sions are being put through. With the proper selection of
valves, normal condition of the amplifier and nOrmal supply
voltage the plate currents of the output valves should be
such that the pointer of the RAU meter is within the blue
sector.
in case the pointer deflects from the blue sector, the
valves should be replaced.
After replacing the valves, check the amplifier mode
of operation once again. The replacement of valves should be
registered under "Replacement of Receiver?Amplifier Valves"
of the log.
Attendance of the receiver implies periodic monitoring
of its operation by means of headphones on all wavebands.
4 ? J. Jittendance of Power Sources
(converters, power transformer, storage
batteries, selenium rectifier)
(a) Installation of Fuses
???? 4.0 gmln
The ratings of all fuses should strictly correspond to
the values indicated on the labels near the fuses and on the
fuses proper. When replacing a fuse see that its contact
with the holder is absolutely reliable.
(b) Switching?on Sup-ply Sources
The power sets (converters) are cut in automatically:
1. When turning on the switches of the lines: COMBAT,
CREW QUARTERS and UPPER DECK at the microphone post.
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2. When turning on the switches of the lines:OOthBAT,
CREW QUARTERS and UPPER DECK on the receiver-amplifier unit.
The power sets can be cut in manually by means of
POWER SET 1 (APPEPAT 1) tumbler switch B7-2 and POWER SET 2
ArrErAT 2) tumbler switch B7-1 on the power-supply switch-
board.
The sets are changed over to work alternately by means
of the change-over switch labelled MIER SET CHANGE-OVER
(rEPTMDUHME AnUATOB ) on the power-supply switchboard.
(e) Attendanc?e_and_Care of_Power_Supnlz Sets
While operating the installation see that the power
supply sets are attended as required in the description and
instructions compiled by the Manufacturer.
When one of the power supply sets is under repair or
test, the installation should be changed over for work from
another power supply set.
(d) D.C._VoltaL.e_Regulation
To ensure that the installation operates normally, it
is necessary to maintain the power transformer voltage at
the rated value, i.e. the pointer of the meter on the re-
ceiver-amplifier unit should be within the red sector. The
voltage is to be regulated by turnine, the VOLT,,GE REGULO.TOR
PET1312TOP HAHPEH1R ) knob to the right or to the left.
(e) Attendance and Care of Storaze Batteries
See that the storage batteries are always charede For
this purpose, check periodically their voltage as follows.
?
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411
Disconnect the installation feeder, The voltage should
be checked by means of the meter on the receiver?amplifier
unit. After disconnecting the feeders observe the meter read?
ing during 5 to 10 minutes.,
A drop in voltage, i.e. when the meter pointer moves
to the left beyond the black sector, shows that the storage
battery is discharged. To charge the battery, turn on the
POVER SET 1 or PuVER SET 2 switches in the intervals between
the transmissions.
The storage batteries should be carefully attended in
keeping with the general rules for maintenance of alkaline
batteries.
(f) Attendance of the Selenium Rectifier
The selenium rectifier requires no special attention.
It is only recommended to make sure that the rectifier
Is in good order, for otherwise the installation,"when sup?
plied from an A.C. feeder, will not operate, and when sup?
:died from a D.C. feeder it will work from the storage
battery only, which will cause a complete discharge of the
latter.
To check the selenium rectifier, remove fuse 43-6
(+ storage battery) with the installation in operation. If
the pointer of the meter on the receiver?amplifier unit is
within the black sector, the rectifier is in good order.
4 ? 4 Attendance of Microphone Posts
These, like all the other apparatuses, should 4,3iven a
periodic check,
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Check should be made by switching on the installation
from any of the two microplIone posts and by bringing trial
transmissions through the microphone as required by the
instructions for MP.
The presence of the signal RED( at the operating MP
and the signal ENGAGED at the other MP and also normal
transmission through the microphone show that the micro-
phone posts are in good order.
Attendance of Loudsypakers and
Their Lines
This should be done:
1. By regularly measuring the resistance between the
wires of each loudspeaker line and the insulation resist-
ance of the line;
2, by monitoring transmissions from the loudspeakers
inserted in the line.
The resistance of the lines as well as their insula-
tion resistance should be measured with instrument TT-1 in
intervals between transmissions,
It is recommended that the resistance of the lines
be measured as follows:
1. Set the tester switch to avs ( Oft]) position)
insert the testing nrod in jack "xl", close the prods and
set the pointel- at zero,
2. By touching with the tester prods the line contacts:
114-5/1-114-5/2 COFBAT; H4-5/5414-5/4; 114-5A-H4-5/3 with
relay P3-4 (LLR-2) CREW Q1,.RT2MS pressed down; 114-5/G-R-V7
UPPER DECK, check the loudspeaker lines for breaks.
If there is no break) the tester should read low
resistances of the order of several ohms. If durinr:
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3
?55?
surements a break is found in the line, switch the instal?
lation for one of the transmissions (the receiver or record
player) and check the transmission throughout the line by
connecting the headphones to the terminals of the Uunction
boxes or loudspeakers.
Thus, a section of the loudspeaker line can be located
in which there is a break.
The insulation resistance of the line should be mea?
sured as follows:
1. Set the tester switch to OHMS position, insert the
testing prod into jack "x1000u and on closing the prods of
the instrument set its pointer at zero,
2. Measure the resistance between the screening sheath
and terminals 11/!,-5/1-11/.-5/9.
Uhen the insulation of the loudspeaker lines is normal,
the tester should read 100,000 ohms and more.
If in measuring the line insulation resistance the
tester shows a lower reading (less than 1000000 ohms),
alternatel7 disconnect individual sections of the line in
the junction boxes and measure the insulation resistance of
each section.
The loudspeakers should be checked by monitoring the
transmissions. In doing so, attention should be paid to the
sound volume, jarring and distortions in sound reproduction.
These troubles should be located and cured as laid down in
the instructions on how to eliminate faults in loudspeakers.
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5, OPERATING INSTRUCTIONS
5 - 1. Instructions for Working_ from
Microphone Posts
To switch on the installation for operation from the
microphone posts, proceed as follows:
(a) if there is no light signal ENGAGED, turn on the
switch of the line required: COMBAT, CREU QUARTERS or
UPPER DECK;
(b) when the light signal READY appears, press the
PRESS-TO-TALK ( HALATb rlym PAHOBOPE ) foot switch and kft
transmitting;
(c) keep at a distance of 15 cm. from the microphone
during transmission;
(d) when the transmission is over, sat the line mdtchi!
to their initial positions,
5 2. Instruction- fo: Relayinp Broadcast
Programs from Receiver-Am lifler Unit
To switch on the installation for operk...tion from thew
ceiver-amplifier unit, proceed as follows:
(a) if there is no light signal EliGhGED o
the control
panel of the roctivvr-amplifier unit, turn the line switches
to COMBAT t CREW QUARTaS or UPPER DEC, depending on which
line is needed;
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(b) when the light signals READY and ON appear, start
. preparing and carr-ling out transmissions from the MU
extension microphone, the receiver or the record player.
1. When preparing and carrying but transmissions from
' the microphone:
(a) insert the extension microphone plug into the
MICROPHONE socket on the control panel of the receiver?ampli?
fier unit;
(b) turn the MICROPHONE ? RECEIVER switch to
MICROPHONE;
(c) put the program through with the, microphone switch
i pressed down.
2. When prepariilg And relaying broadcast programs
picked up by the receiver:
(a) turn the MICROPHONE ? RECEIVER, switch to RECEIVER;
(b) set the RECEIVER tumbler Switch to ON position;
(c) insert the headphones plug into the RECEIVER OUT
PUT (BMA IIPMEEMKA ) socket on the control panel
of the receiver?amplifier unit;
(d) cut in the loudspeakerjine required;
(e) make sure that the receiver knob (extreme right) is
set to WIDE BAND (TOMAH ROAOCA ) position;
(f) turn the knob (extreme left) fully clockwise;
(g) tprn the receiver BANDS (NAMINHM ) knob to
select the waveband required;
(h) tune the receiver in to the required radio station
by turning the receiver TUNING (HACTPOgNA ) knob and by
monitoring the transmission with the aid of headphones.
The receiver tuning in to the appropriate radio station is
to be checked with the aid of the "magic eye" (valve 6E5C).
The minimum?shaded sector of the "eye" indicates that the
tuning is good;
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(i) on finishing the tuning, turn the LOUDER (rPotitt,] )
knob slightly to the right, take the headphones plug out of
the RECEIVER output socLet and set the loudness level of the
relayed program as required.
The loudness level of transmissions can be made normal
with the aid of the LOUDER knob according to the level
indicator on the RAU panel. The level of a transmission is
normal when the instrument pointer on the transmission peaks
deflects to the right edge of the red sector, which corres-
ponds to 30 V;
(i) relaying of programs picked up by the receiver is
checked by means of headphones plugged in the AMPLIFIER OUT-
PUT (BUX0A KMAMTEKH )socket;
(k) when the relaying of programs is over, turn the
RECEIVER tUmbler to OFF ( DUJOINEHO ) position.
3. When preparing and carzying out sound reproduction:
(a) insert the two single-pin plugs of the pickup in
the PICKUP ( aniOCHMMATEAL ) socket. Do not insert the
zwan.patia_LnAtt_19.2121 MOTOR - 127 V ( MOTOP-127 B)
intended for the double-pin plug of the record-player motor.
(The instructions on use of electric record player Yil-1 are
supplied separately);
(b) turn the receiver knob (upper one at extreme right)
to PICKUP ( 3TiYKOCHVATE3I11);
(c) turn the MICROPHONE - RECEIVER switch to RECEIVER;
(d) turn the RECEIVER tumbler switch to ON position*
At this moment the luminous inscription PICKUP will
appear in the upper right corner of the receiver scale;
(e) cut in the loudspeaker line required;
(f) start sound reproduction with the aid of the
pickup.
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The level of loudness in sound reproduction is regulated
by means of the LOUDER (rPOWIE) knob.
The loudness level is set in the dame way as Ili the case
of transmissions -from the receiver.
To obviate crackles and clicks invited each time the
pickup needle is set on the record, turn the LOUDER knob
fully counter-clockwise when changing records.
When the transmission from the microphone post, receiver
or record player is finished, turn off the installation, i.e.
set the COMBAT, CREW QU,diTERS or UPPER DECK switches on the
receiver-am4fier unit to OFF position.
5-3* _Instructions for Cheokin&Aliall2tIlLataa
of the Installation
The readiness of the installation should he checked
regularly when testing the engines of the ship:
' Subjected to the check are:
1. Amplifier.
2. Selenium rectifier.
3. Voltage of storage batteries (if any).
4. Converters (if any).
5. Operation from the microphone posts.
6. Operation from the receiver-amplifier unit.
7. Insulation resistance of the loudspeaker lines*
1. When checking the amplifier:
(a) turn on the installation by mean6-of the COMBAT,
'CREW QUARTERS or UPPER DECK switch on the receiver-ampli-
fier unit;
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(b) when the signals READY and ON appear, measure the
plate currents of each valve with the aid of the instrument
on the panel of the receiver-amplifier unit.
If the signal READY appears approximately one second
after the installation is turned on and if the pointer
deflects within the blue sector of the instrument, the
amplifier is electrically sound.
2# When checking the selenium rectifier:
(a) switch on the installation from the receiver-
amplifier unit;
(b) check the voltage developed by the selenium recti-
fier (according to the blue sector on the instrument).
If the voltage supplied by the selenium rectifier is
too low and the pointer moves beyo.od the black sector, re-
solder the, ends of power transformer Tp1-3 as stated under
6 - 4,1.
3. When checking the voltage of the storage battery:
(a) turn the SHIP'S FEEDER - SHORE-END FEEDER =itch to
SHIP'S FEEDER;
(b) set the change over switch of the instrument at
24 V;
(c) measure the storage battery voltage with the
arrangement turned off.
If the pointer is within the black sector, the battery
is in good order. A quick drop in voltage shows that the
storage battery is discharged.
In this case the battery should be charged additional-
ly as stated under 5 - 3, e.
4. When checking the converters (with the installation
supplied from the D.C. feeder), manually turn them on to
operate alternately, and then follow the special instruc
tions for the given type of converter.
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The alternate switching?on of the power sets for manual
operation is effected with the aid of the POWER SET 1 or
POWER SET 2 tumbler switches and the POWER SETS CHANGE?
OVER (11EPEKAIREHME APPErATOB ) switch on the power-supply
switchboard.
5. When checking operation from the microphone posts,
follow the instructions on how to operate from HP.
The installation can be tested by counting ONE, TWO,
THREE, etc. or pronouncing the word TEST into the microphone.
The presence of signal READY at the operating MP and
signal ENG,GED at the other MP and also normal transmission
through the microphone show that the microphone posts are
in good order.
6. When checking the installation from the receiver
-
amplifier unit, follow the instructions for relayillg.broad-
cast programs,
To check transmissions from the extension microphone,
from the receiver or the record player, insert the head?
phones plug into the AMPLIFIER OUTPUT socket on the panel of
the receiver?amplifier unit.
7. In checking the insulation resistance of the loud
speaker lines, follow the instructions set out under
"Attendance of the Loudspeakers and Their Lines".
Insulation resistance is checked by touching the earth
terminal with one prod and the line contacts on the receiver?
amplifier unit with the other. If the resistance is
normal, the tester should read not less than 100,000 ohms.
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TROUBLE-SHOOTING PROCEDURES
6 - 1, General
Fault finding should be preceded by a thorough study
of the installation so as to,know the operating principle
of the arrangement as a whole and of its components in
particular, to be able to correctly read diagrams and to
know the purpose and performance of all electric com-
poneuts . It is also necessary to know well improper indi-
cations for all units and assemblies. Fair knowledge of the
fault-signalling system enables the operator to quickly
locate and correct the trouble. In case of any trouble in
the installation, first determine in which unit
has occurred and then trace the trouble to the
component of this unit.
Following this; locate the faulty circuit
It should be borne in mind that the fault
a fuse to blow does not lie in the fuse itself.
That is why before inserting a new fuse, thoroughly
examine and test the circuit of the blown fuse.
Only skilled personnel should be allowed to correct
troubles which involve replacement of parts or repair of
the equipment.
Listed below are some hints on how to locate and remedy
the simplest troubles in the installation.
the trouble
defective
of the unit,
which Ca.k),5CS
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6 ? 2. Troubles in Microphone Post&
1. When the microphone post is switched on with loud?
speaker line switches B5-1, B5-21 333 (Fig4201 signal READY
does not appear, but the installation is cut in, transmission
Is normal and signal ENGAGED lights up at the other post.
Possible causes:
The pilot lamp burnt out. Use a special screw?driver
from the tools kit to unscrew the cap and then remove the
bulb with a bulb extractor and insert a new one.
2. The same as in Point 1, but there is no signal
ENGAGED at the other post.
In addition to the cause referred to in Point 1, there
may be the following causes:
(a) contact fault between contacts 6 and 5 of switches
B5-1, B5-2 and B5-3;
(b) contact fault between springs 12-13 in relay 2.1?)
(CPR) mounted on the amplifier chassis; re?establish contact.
3. When the post is switched on, signal READY appears,
but no transmission through the microphone is heand.There
is no audio voltage across the amplifier input.
Possible causes:
No contact between springs 22 and 23, 32 and 33 in
relay P3-1 (MPR) or between contacts 1 and 2, 3 and 4 in the
amplifier input socket.
Re?establish contact by cleaning or adjusting the re?
lay and the socket.
6 ? 3 Troubles in Receiver?Am lifter Unit
These may occur:
(a) in the amplifier;
(b) in the receiver;
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(c) in the switching circuits of the receiver-amplifier
unit.
(a) Troubles in AmRlifier
Troubles in the amplifier ma Y be caused by faultSr
valves, punctured capacitors or damaged wiring.
Faults caused by defective output valves are indicated
by the AMPLIFIER FAILURE lamp or the fault-signalling System
as,a whole. Determine the condition of valves by checking
their plate burrents.
If these currents differ considerably from the admissi-
ble values, the valves are out of order (poor emission,
breakdown, low vacuum, etc.). In case the plate currents
are not within the limits allowed, replace the faulty
valve. However, the cause of the current being different
from the rating does not always lie in the valve.
If after replacing the valves the instrument reading
did not change, or changed inconsiderably, the cause of the
trouble does not lie in the valve.
A sharp increase in the plate current of valves GRK
may occur due to the breakdown of one of the coupling
capacitors C1-4, C1-7 (pee the diagram of the amplifier in
Fig.27).
On the contrary, the breakdown of one of the ali-
fier filter capacitors C1-90 C1-10 or C1-8 may cause a sharp
drop in plate current or its complete cessation. A short
circuit in the winding of relay P1-3 (CPR) leads to a
sharp increase in plate currents accompanied by signals
AMPLIFIER FAILURE and FAILUaE,
?
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In oach ease of abnormal operation of the amplifier it
is necessary to determine the nature, cause and place of the
fault by using the diagram and a tester.
(b) Troubles in Receiver Their Caases_and.
Remedy
given below are the most probable troubles caused by the
quality of valves and their prolonged service life. These
troubles can be located without testers and eliminated in the
process of operating the receiver.
More serious faults arenot given here, for special
instruments and skilled personnel are needed to locate and
remedy them.
1. The rezeiver is silent;the scale is illuminated.
When the tuning knob is turned, the visual indicator is
operative, The-receiver audio?frequency stage is inoperative.
Replace valve 6P2.
2. The receiver is silent. When the tuning knob is
turned, the visual indicator is inoperative. The valve of
the conversion stage or the valves of the I?F amplifier
stages are also inoperative.
Replace valves 6A7 and 6K3 one by one.
3. Reception is normal; visual Indicator is inoperative.
Valve 6E5C is faulty, replace the valve.
4. Poor reception, visual indicator operates poorly.
Valves 6A7 and 610 are of poor quality; replace them one
by one.
54 Poor reception; visual indicator operates normally.
Valve en is of poor quality, replace it.
6* When the receiver is turned on, the scale is not
illuminated. The function switch is in RECEIVER position.
The lamps illuminating the scale burnt out; replace them.
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7. When the function switch is in PICKUP position, the
PICKUP window on the scale is not illuminated. No contact
between the lamp and its holder or the lamp burnt out;
screw in the lamp fully or replace it.
(c) Troubles.,in $yitehing Circuits_of
Receiver-Amplifier_ynit
As is known from the descripiion of the installation)
the switching arrangement of the receiver-amplifier unit
comprises relays, switches, change-over switches and tumbler
switches.
Since all these elements are scattered all over the
unit (the amplifier, control panel, frame), fault finding
in the switching circuits should be preceded by a thorough
study of the diagram of the receiver-amplifier unit and the
installation as a whole.
Consider some possible cases.
I. Faults in the sound channel circuits.
When the installation is switched on from the receiver-
amplifier unit, singals ON and READY appear and the pilot
lamp of the line concerned lights up.
No failure signals. The receiver operates normally.
After the headphone plugs are taken out of the REC.UV:di uUT-
PUT (BUXO riPMENHICA ) socket, there is no transmission over
the loudspeaker lines.
Possible faults and their location procedure:
Insert the plug of the extension microphone of the
receiver-amplifier unit into the MICROPHONE (MEPOOOH)
socket, turn the MIC1OPHONE - RECEIVER function switch to
MICROPHONE and begin counting ONE, TWO, THREE, etc.
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If transAsSion is audible in the headphones inserted
in AMPLIFIER ,OUTPUT ()Li= EMMEN ) socket r3-5, the
cause of the fault may lie in AMPLIFIER OUTPUT (BIAX0A
11PiitiNn4liA ) socket r37.2 (no contact between springs 1-2
or 3-4) and also in switch B3-1 (no contact between springs
5-6 or 11-12).
If in monitoring through the headphones no transmission
is audible, insert the extension micTophone plug into
AMPLIFIER INPUT (PIMA COAIITEX ) ,socket and check the
transmission.,
If transmission is audible, check the following contacts:
22-23 or 32-33 in relay P3-1?(MPR), 5-6, 11-42, 1-2 and 7-8
in switch B3-1 and contacts in AMPLIFIER INPUT socket rs-s.
In all cases check the mentioned circuits and eliminate
the faults by re-establishing contact through cleaning or
adjustin6 thesprings in relay P3-1 (MPR) and sockets r3-2
and rs-3.
The absence of transmission over the loudspeaker lines
may also be caused by faults in the circuits of the output
switching.
If the amplifier is in good order and transmission is
audible at its output, the faults may lie in the line rolay
contacts: 21-22 or 31-32 of relay P3-3 (LLR-1) in case of
relaying over the combat line; 14-15 or 32-33 of relay P3-4
(LLR-2) and 22-24 of relay'P3-2 (BTR) in case of broadcast
relaying over the crew quarters line,
22-23 and 32-33 of relay P3-4 or 31-32 of relay P3-2
in case of command relajing,
2/-22 or 31-32 of relay P3-5 (LIR-3) in case of com-
mand and broadcast relaing over the upper deck line.
In playing phonograph records the sound channel com-
prises: the pickup, the final stage of the receiver
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output to the amplifier input, thea1ifier and its output
circuits with the loudspeaker lines. If in, operating from
the pickup no transmission is audible across the RECEIVI:R
OUTPUT socket, the fault may lie either in the pickup itself4
or in the circuits between the pickup and its input at the
receiver (receptacle block 03-ls contacts 1-5 in tone
knob B2-2).
The continuity of the final stage of the receiver 13
best to be checked by switching over the receiver from the
PICKUP posttion to the NARAOW or BROAD 11,..ND positions.
If transmission is audible in the headphones connected
across the RECEIVER OUTPUT socket, the failure of playback
is caused by the pickups its circuit up to receptacle
block or by the section of switch B2-2 in the receiver.
The fault is,located by successively ringing out the
said circuits.
2. Faults in the signal system circuits, such as the
absence of signtd ON when transmission over the loudspeaker
lines is normal may lie in that lamp 3H3-5 on the control
panel has burnt out or the circuit of this lamp has become
defective.
No special instructions are required on how to locate
and eliminate troubles caused by faulty valves and indicated
by the signal system.
6 - 4. Tr?.1.2.1ly Circuits
_i
These are usually caused by defects in the selenium
rectifiers voltage regulator and switches.
Consider some possible cases,
1, Drap in voltage across the selenium rectifier out-
put or the rectifier fails to operate altogether.
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The condition of the rectifier ia checked by the method
described under :)ection 4-3, f, If the instrument pointer
moves be/opd the black sector, disconnect the wire connecteC
to lead 18 of transfomrer Tp1-3 and connect it to leads 19
or 20, thereby increasing the A.C. voltage applied to
selenium stack A4-1. '
2, If A.C. voltage of 1101 127 or 220 V is absent in
the main-powered windings of the trkansformer when the instal-
lation is turned on, the fault should be looked for in the
circuits feeding these windings.
When the installation is supplied from the ship's or
shore-end A.C. feeder, the following troubles' may occur:
poor contact ip interlocks B4-1, 34-2, 134-3, 134-4 and in
change-over.switth 33-8 or blowing of fuses flpe-7143-2.,
43-9 and -Hp?-1O -due to a short circuit in the in-talla-
tion.
- 5. Troubles In Power-25unply 6w1tchboLrd
These may occur when the installation is supplied from
the ship's D.C. feeder.
They may be caused:
(a) By blowing of fuses flp7-1147-20p7- and Hp'
of the FIB type in the supply circuit of the converters
on the L.C.- side, due to troubles in converters, in the
groups of relays P7-1, P7-2, P7-3, P7-4 or P7-5, 27-6,
P7-8 and in the wiring;
(b) by troubles in change-over switches 137-1 137-2 and
B7-3.
Consider some cases.
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1. When change-over switeh B7-) is turned from POWER
SET 1 to POWER 6ET 24 with the installation in operation,
power set 2 fails to start.
Causes of the fault:
(a) A break in the circuit of contacts 180 19 and 20 in
cholge-over switch B7-) or in that of contacts 2-) in tUmbler
switch B7-1. j
Ring out the circuit according to the key diagram and
correct connection. ,
(b) Burning of contacts 11-12 in relays P7-50 P7-61
P7-7 and P7-8. Restore contacts.
(c) Blowing of ftmes 07-3 and 07-4 of the RB type
in the supply circuit of the converter.
Eliminate the cause of the fault and replace fuses.
2, 'when power set 1 is started manually with the aid
of tumbler switch B7-21 the set stands still, while
power
set 2 starts from tumbler switch B7-1.
Causes of the fault:
(a) Do contact in tumbler switch B7-2.
Check the switch with a tester and re-establish contact,
(b) h break in the circuit of contact 1 in tumblr siltht
B7-2.
Cheek the circuit according to the key diagram. ;Aimi-
nate the fault.
(c) No contact in relays P7-10 P7-20 P7-3 and 11-4 due to
reasons as those under Point 10 b.
(d) Burning of fuses Hp7-I and Hp7-2 of the FIB
type, on the D.C.'side.
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6. Troubles in Loudspeaker Lines
1. Loudspeaker Sa..--111
Jarring is the main trouble which may occur in the
loudspeaker after long service.
The causes of this trouble may be as follows:
1. The voice coil in the gap of the magnetic circuit
is off-centred.
2. Defects in the moving system: slipping-down of the
voice coil turns, warping of the voice coil, mechanical
defects in the diffuser (breaks, dents, fractures).
Tr oubl
Jarring caused by off-centring of the moving system.
Remedy
Remove the front cover from the housing by unscrewinc;
four attachment screws, and unsolder the voice coil junc-
tion wires from contacts 14 and 16 of the transformer
terminal plate. Unscrew the nuts securing the loudspeai:er
head and detach the latter from the cover.
By slightly rocking the diffuser with two fini;ers
of both hands holding it on two aides, checL by ear the
centring of the voice coil in thr air i;ap of the ma;nr:tic
circuit.
If the voice coil is off-centred, a rustle will be
heard as a result of the coil ruhbint; a:3ainst the t-,:tp
sides. To re-centre the coil loosen the two screws on the
locating bosses of the diffuser holder and carefully shift
the moving system until the coil is aligned in the air cap.
Then tighten up the nuts and assemble the loudspe:tkor in
the order reverse to its disassembly.
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72 ?
Trouble
The moving system is faulty.
Remedy
The system should be replaced.
For this purpose, in the loudspeaker head removed from
the housing and detached from the cover, extract the two
screws securing the centring arrant;ement to the diffuser
holder,
The pressboard sectors and the fixed part of the diffu-
ser flange glued to the skirting of the diffuser holder are
to be wetted profusely with asolvent (acetone).
Ifter the dry glue becomes Soft, detach the movin
system from the :skirting of the diffuser holder. Remove the
remnants of the glue from the skirting and replace the systen
by a new one.
The new moving system should be mounted as follows.
Install the system (the diffuser with a voice coil ,Ind a
centring arrangement) in the air gap and on the diffuser
holder so that the leads of the coil are opposite the to
secured to the diffuser holder, while the holes in the
centring ring are opposite the holes in the locating bosses
of the holder. Then pass the screws through the holes and
screw on the nuts.
The nuts should be tightened finally after a uniform
gap is obtained between the iron core of the magnetic circuit
and the bobbin of the voice coil. The coil is to be centred
in the gap with the aid of four paper strips, 8 to 10 mm
wide, inserted in the gap between the voice coil and the
inner wall of the gap. Following this, glue the diffuser
flange to the skirting of the diffuser holder with nitro-
glue No.114.
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. 73
After the glue dries, check the centring of the movin,
system by the above method. Then, cover the skirting of the
diffuser holder with a new layer of glue and attach the
pressedboard sectors to the diffuser flange with nitro6lue
lb. 114,
2. Loudapeaker
The main defects which may oc.cur in the loOdspeaker
are:
1. Jarring, when playing records.
2. Complete failure to operate.
The cause of these faults may be improper use of the
loudspeaker (considerable overloading, dust, etc.).
Jarring may be invited by the voice coil being off?
centred in the air 'gap of the Magnetic circuit, slipping
down of the volec coil turns, penetration of iron filings and
dust onto the surface of the diaphragm throuGh the horn
outlet, etc.).
Complete failure to operate in caused by a break in
the leads of the voice coil and burning out af turns eS tho
voice coil. These troubles should be eliminated in special
repair shops.'
Eliminating Fault
To remove the above troubles, replace the moving
system.
For this purpose:
Extract the four screws securing the upper cover of the
loudspeaker, detach the ends of the wiring conductors from
the loudspeaker head and by turning the head counter?clock?
wise screw it off from the horn.
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?
74
After the head is detached from the horn, extract the
four screws securing the chamber and detach the ends of the
wiring conductors from the tags on the annular base of the
moving system.
Then, remove the defective moving system and replace
it by a new one.
Be?assemble the loudspeaker in the reverse order of its
disassembly.
Before attempting to install 4 new moving System, clean
the air gap in the magnetic circuit with the aid of an
Insulating tape wound on a thin brass strip.
Loudspeaker heads should be repaired in a olGad room
free from metal dust. 0
6 ? 7. kati2122..132.....131...ciicu
A crystal pickup is used in the installation.
Troubles in the pickup may be caused by a break in the
contacts of the crystal or by mechanical defects which may
occur in the crystal as a result of a hard knock.
To 'obviate these troubles, use the pickup with care so
as to avoid hard knocks.
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Part II
KEY DIAGRAMS AND GENERAL VIEVS
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r9
??:,)
9
Fig.!. General? View of Receiver-Amplifier Unit
a
a
F(9. 2. General View of Receiver-Amplifer Urgl, with
Front Panel Unfolded by 70'
0
0
0
0
Q
0,
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?
,...-:
, .... . . --
a-..... . . _
-a
?o, .?,,
?mit 14 Ith?,i
--
B?,,i "In.. _
....:.
rii7L:NyiiiiirAiiiiMilk
---`----- -. '. illiFiig
Ir 1 i
I
I;OM iiiiiimum
n.g It : ,......1-,. ! .11,,
Writ% 1?4,1 I ; ar `....IL
Fig. 3. General View of Receiver-Amplifier
Unit with Front Panel Unfolded byI80'
Fig.4.
General tlew of Microphone Post
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Fig. 5. General View or
Microphone Post with Open Cover
a
Fi?.6 General View orMicrophone
Post In Proteotive:'13o?!
RELAYI1W
;,-.7t.:-> ?
General View of moving-coil
-?*;" Loudspeaker 361-3MA
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0
Fig.8.General View of Moving-Coil
Loudspeaker 311. -3/4A with Open Cover
JI
69.9.Moving-Coil Loardspeaker
3r,7-3MA Disassembled
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9 9 9, 9
10 It t3 14 IS 1:011 17 11
9999 0 0
'...11?1?1m11.1
-- ?
I
Connection of 31-4-3h1A,depending on voltage
and power,with the loudspeaker operated with Prz
in two-or Three-wire loudspeaker lines.
Connection of srA- 3MA
conned-ion of 3r1-3MA when
operated with Pr-2
10 20 30 40 50 60 70 80 SO
100110110130140150 NO rAD 80
When connecting,remove jumper
from 3r4-3144 between contacts IS-le
3-wire line
2-wire line
1-9
3OV-145W
1.Common wire-mitre
2:51Comonaglide.cotranzacqp
t First wire-
ifosecatoogi 17
' ,
1-10
60V-1W
1-6
30V-3W
1-11
_
60V- 05W
6 te 151(rdependins
yoltage.ond,powert
a srmdcasr
on
tram'
wire-contort
8
wire,.comact
18
,
1-7
30Y-1W
1-12
30v-aiw
1-8
,60V--3W
1-13
?
60Y- COW
mission
Cornea-lion of 344-3,xe-Prtionotion tone
2
30V-3W section mid-point
31-1-3*4
CillarTs
Pr-2
Witart:
, ri I - ag 4
4111furtS
Pr-2 ,
esnraers
1
1
14
14
3
30V-1W section mid-point
15
14
16
24
16
24
17
1
,. 18
6 hi 13
18
6 10/3
1416
Speech coil contacts
depentrogi
en Witty
and pater
dtoenling
mw/loge 1
ond power
, Note: Wire12-of the loudspeaker line is connected
I to any contact (from 5 to Al) of loudspeaker 31;1-30314,
I depending onpower and voltage (with the kudspectker
J operated-withouf gain control pr-o.
Fig. la Key Diagram of Loudspeaker 31-4-314A
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loudspeaker 31:6-3i1A
0
Three-wIre loudspeaker
line
,Four-care
Junction
ti cable
0JALIJA-t2.
, or 0 *0 /0 --as
'''.4444441-41MAg
Code designation of the loudspeaker line wires:
0-common wire of the three-wire loudspeaker line;
K-wire of The command relaying line:
ff-wfre of the broadcast relaying lire
Notes: 1. Wirelrof the loudspeaker line is alf?nected to
any contact (6 to kV of the loudspeaker depending on power
and voltage.
2. Wire ir of the junction cable from conhicf laf the
loudspeaker Ls connected to arty contact (6 to 13) of gain
control Pr-z, depending on power and voltage.
Fig/I. Loudspeaker 3174-3AfA and Gain Control Prz Connection
Diagram for a Three-Wire Loudspeaker Line
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Loudspeaker 31-11-3444A
41
O
NI
?111
Gain control Pr-2
Al?????=1.!IP
?
-7"n
Lit. ft_
Two-wire loudspeaker
line
Four-core junct
cable
Of Ot J040 SO
rt 7, 1 ft ti 2t3
PI P1 " r01
?
if
0
Note: viirerfof the Junction cable Is connected
to any contact (6 to13) of gain control Pr-.21de-
pending on power and voltage.
Fig.12.Loudspeoker 301-3Af A and Gain Control pr-2 Connection Diagram
for a Two-Wire Loudspeaker Line
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410
RELAYING
TPAHCARLIHR
111011
LO L1IJDSPEAHER
VOLUME
F1g,13. General View of Gain Control
Pr-2
Fig.15.General View of Loudspeaker
hiApr-i
Fig.14. General View of Gain Control
Pr-2 with Open Cover
Fig.10,.Genervi View of Loudspeak-
er AIM with Covers Detached
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Fig. 17. Head of Loudspeaker I.:Apr-1
?
Fig.18,Movirig System of Loudspeaker
girl !
?
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0
1
Purpose - -,
pole
I [Comm,'"
2
Nidivinf 30149VA serifin
3
764-,41at 371-5VA section
4
mkitpard 3ir3asTrtion
5-
AWA
6
30V ; 5 VA
7
30r, 3YA
8
WV; 10VA
60 v? 5VA
10
30 ; IVA
11
601 3VA _
12_
60; /VA
Fig.19.Loudspeaker At4P1-1. circuit Diagram
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Fig.20.General Viewof Extension
Microphone 4111-6
Flg.21.General View()
Record Player YR
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Fig. 22. General View of Power-
Supply Switchboard
Fig.23.General View of Intermediate Transformer I7T-96
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S
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Loudspeaker
lines, 30Y
159
5-5
?????..1?I.??????a.
5-6
combat
ftwo-wire fine)
hist/Innen I
5-3
U-4
m=en?PSI.,
5-2
5-1
rfewqmgriers
t ee-wwe tine)
Aver deck
..0()wo-wire fitteL.,
5-8
? Miffs feeler for
II01127 am( 220Y,
I 5Irere-end feeder for
.,,irctIZ7 and 220,,A.C.
" Ship's feeder for
end 220Y, A.C.
List of instruments and units
Nos
Instrura
of unit
design,

Symbolu
Name
Nees
1
1
fiIK-104
Receiver-amplifier unit
RAU
2_
6-1
1K-114
Amplifier unit
3
6-2
41K-na
Receii?er unit
6-3
MK-13A
control panel
5
5-4
M1016A
sable faffain bard
6
5-5
Yll
Electric record player
7
5-10
converter A hir-3
8
5-fl
Converter Anfr-3
9
'
5-8
511KIIV
Storage battery L
to
5-5
OK-174
microphone post Aral
MP-I
If
6-6
MK-17A
Microphone post NaZ _
, MP-2
12
6-7
MK-21A
Power-supply switchboard
L
` PSS
Fig. Z4. Slock-Piagram of hflaY-15c Installation
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Aficrophone post 2/0-17$ in
protective box (on the bridge)
Microphone p051MN-17A
(in the radio room)
sr:mar?
Leng7h of cable 6m.
'Power set 2
i.".7
c4."`
te.
Extension
mkt upfront
Cable fanning board of the receiver-amplift
unif -IDA)
A11werset I
:7r11
IMO
Length o oct e 6m.
intrag1at7-erT
I [!(dttl elotortel
LShore-end A.C.
Power supmpoly2swimichlitoff----ifenelearnfdorz7fisdr,
n7?
117-2
Ship'STC.feeder for
110 and 220V
illiP32.1.5. go@
L_
Elements delineated with dotted line are supplied
in case the installation is fed from the ship's .D.C.
mans
HP,
11.1pper deck
Or lin
To crew
quariors
7oudspooke
line
Crew uarfe
loudspeaker]
g
Jun
0 , Cginboi loud.
4
,koker tine
Fig.25.Connection Diagram of MKTY-15c
Installation
01732.113
Notes: I. Gain control,
loudspeakers located In
L With the installation
the latter should beam
boord via cable No.18.
3. Depending on the pc
switched fp according
14! 3tAigs oal-MitnePefil
5. The extension microp
&The outer rediffush
and should he connect
D41-51.9 of the cable f
4,1111????-?-???????????????????-...
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?
lost 1A11-17A
7 room)
Ex tensMn
microphone
tit
11.020/731"
7117 of cable 6,71.
mrymie
Cable fanning board of the receiver-amplifier
Power supply switchboo#'
K-21A
Shore-end A.C.
---deeder for110,
127.and 220V
? ?7
te are supplied
the Ship's 37.C.
-am of MKTY-156
411117111 ?
cable nomenclature
_ ,COVe71710ke;
las
m
up .
rype
I//PC
Note
C.,otleito;
1
Mlle
dilggz.redr,
_,
.,.
1,3
Keys
24.5
egrfelcied ,
tt.F5,16
' 3
A'11fPf?
34
Shielded
Km*
44
Shielded '7
' . '
142.0 j
5
0=10.
.-..t ,
2
Flexible,
shielded
Supplied ty
file.iftm.
tudurerlt
1ttn9lit
2.,/, - 1
6
,
_ .
'
fforrl.,
2 .
Flexible '
r. h ,
WIecryprne
1
7
I
24 ,
Sitte1ded .
W,41T.
Outer
rediffusion
Lauds eaker MAPr-i
41lpper dock loudspeak-milon.rin
or line
To emir ?
quarters
loudspeaker al,?
line
7p-pnr-es
oudspeaker line
Loudspeaker Gain control
3r,1-3RIA P1-2 Gen control
Loudspeaker 31A-3NA
Junction box reel st.
alter me
Combat' Ioudspez-- 01)321'ff
-} J Loudspeaker
- 3rA-30fA
tallaPrja
?
Notes; 1. Gain control PC-2 In the combat line should be socked In only for
loudspeakers located in tiresome room with the microphone post.
2. With the Inshollation supplied from the ship's 110,127 or 220V A.C. feeder,
the latter should be connected to contacts 114-19,114-3110 of the cable fanning
board via cable Male.
3.Depending on the power and yolfage required, the loudspeaker should be
switdied ip occora'irni to the fable on the carer of the amtwf box of the loudspeaker.
q. In this Olt/gram peakerAiiPM Is switched in for 301',SYA; loudspeakers
3rA-3s44 are 37vitett tit for sot; JVA.
5. The extension microphone is inserted In the AUCROININ? socket on PA/I.
6. The outer rediffusion line mug come m front both sides
and should he connected to the same terminals 174-518 and
.174-51s of the cable fanning board.
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?
1/351 ws. 05-2 Bs
go
L
a
" a"
Com ers
Enga 11 Ready
41116
Press fa talk
I I Press
Antenna
nAtti-J
c24
R 24
82-la
Cs
s2-46
Change-over sw
12-2 posit/or
t Pickup
2. Wide band
a Narrow bo
Change-over switch 132-1 mil ions:
1. tong waves
2.Media07 waves
3.Shori waves!
4. Short waves 11
Pr
,?
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?
.irgaged
11113
ombat
Amplifier input
cl
rnpliffer output
r3-s
t j3.5
C2 -?,7
r-
?aliens:
Change-ever switch
sz-2 positions:
I. Pickup
2. Wide band
3 Marrow band
iver switch
erswitch ti
lions
124V
2.Lylindftfl
5: Ma Ms
P -1
In case an A.G. feeder Is
available on board the ship
The elements and instruments
delineated with dash-dotted
line should be excluded from Power set So.1
the diagram. Between contacts
n4-3/I and 114-3/5 13 Inserted a
Jumper shown in the diagram
as dotted line
Fig.26,K3y Diagram of MKTY-15o Installation
Power set tlo.2
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Combat
pr,J
.-u
Upper deck
Vier output
mpr-i
Upper deck loudspeaker line
Outer reilf fusion
Outer redif fusion line
Crew quarters loudspeaker line
Tp1?3 at -31)
lip! 11414
i1n3M-3,117 r
Combat loudspeaker i
tme I
S77ore-01 feeder
Snofread a1r'34;271Y1
feeder
7,0
lys
feeder
Sere-end A.C.feeder
r 110./27.220,
MEMO
SPore-end
feeder
122V-5A
220Y-3A
Spare-end A e. feeder
for 110,r22. 7.2c
RI-ft
er switch 0-1
/lions ?
1.24V
2.1.erelindiOler
5./flains
re utator
flp1-3
Power
set 14
sary-6,:
Ship's .1W. feeder
/10. 220Y
Notes: In this diagram all relays are
do-energized; the switches, knobs and
tumbler switches are turned off
?wer set No,2
?
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Electric record player
Control panel
mK-4.3A
Microphone
Receireroufp
1=1
n- 2
adore
?/Ai,
ii1111111 tillismMlirmaimmermi_ tam
41111111111111Lignsonim=7:natzt
c. IT ' 1101011111iii 5:
1
' :.?;
cpi tilt . I MIMI
ii ;I
I
.!.434"gingEAP0:11 _
Instrumenf tswifell
positions: I , _ 1,
I. voltage aerie. ss MI Su*
*ma tic end' pot r-
s5ys.Allealm.fiscivr ec fur s e 11
3.1 eve! indi tor I
rum, 7. Plate cur I
I
t9h.ropluaythe1g17131'
nf .1
1
priiilpfili through II-6113C 1
1
ItZ111 Mil
.Atar
1 II Aar:ger
J ' I
L_----
t__ - -
3
M-3
IVI7f
r-- ?
65-i
I
I **
Comb f Crew quarters PPer deck
ress when
? talking
? t,
ta.
E're,:ss w j
Talking" Combo r
I 0
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8
V.iernehese
wj
rins
Eno ed eady
17113.2 tt
Receiver outpLit
f=r
el_ti.r-4 c 83-5
..?01/44-1
4 Cointwit .rEriv varier Upper deck
beorrerktia3-2
lanlatr y

I
allure v r 1 ' . p '
1110 rr ., ? . ,
. Mrr:-, if_t-.i9. a k 8 .V111 11111.11-11 11R1"e rai-,-g,l.i
s
ho ai
wilime il"?a??,
'
e
? ? ? ? ? ?
.... _..... .....
n",ff
I
gnstrument trwifr8
rosi lions: I I
Voltage aertosskar
Tuftimofle andpgaor r
us/em circw s
3. Level india Icr
;. Mains voltage
Plate curreft
hrough i -6 POC
1. Plate curteni
hrnugh 11-6173c
implit ter
AK- IIA
IL
J . hor waves 11
Change-ove,r swirch
B2-1 posirtons:
!long waves
2.1ifeellum Waves
3. Short waves
4 St
rxtensien
iFrahlion
M5 f,45.2
"ss w
alk frig
-aver
srn 82-2
positions:
I. Pickup
2.W/de band
3. Narrow band
Receiver MK-12A j
Crew quarters Lipper deck
Extension I
microphone Lz_
? ? --Ill r --- --
I 1
661 th6.1 I
? 0 ,I
Press when 1 LeresL.
talking j mfirrop
Fig. 27. Key Diagram I of MKTY-15c Installation
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_
? --
Combat Crew quarters
er deck
?
Ship's .der
220$1
Outer rediffasi:
r.541 83
a t
Shornd
Jeff 7
127V -C?
2 201
?
er deck lout&
eaker
t lou sostEL...ine
W4 outer red if fusion
"line
tom
n t-sh
I
TN -311 oak -3/1 I I :i11111141
Cable fonnigg board L___
--014171S?tar.Thia&TIO:72TIM
?1--'0ZOtt
724V-2
nel*,
or-? 4
n, -t
n7 -
171.ti5
nt-1
nt-tita
r1?2411
rot
291/01t
6
Power e el z
77-T1
0
!Niro Ship's D.C.feeder 002 20 + 1
*E
iNotes: I. When The installation is supplied from the
,.. ship's A.C.mdins (variant lio.1),power-suppfliswitchboard
?--,
..'! MK-21A ,power sets Amr-3 and storage battery are cr-
eluded. rhe ship's feeder is Onnected.tocontotts 114-3/9
and n4-3110. 1 ,
c:,...
2. When Me installation is supplied from the ship's AC
e. mains, The jumper between c'Iontaets 174-311 and 114-316
(,)
CIJ should be removed.
* .
t. 3. The amplifier, receiver, control panel and cable
Q.
?I fanning board are located in receiver-amplifier '
Unit MK-10A. I,
PP2j
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'111.
LIST OF COMPONENTS
Position
symbol
/fame and type
Rating.
411tY
:Note
4
R1-1
R1-2
R1-3
R1-5
Low-frequency am lifter unit WiC-13A
1
1.
? 1
Resistor I11-0.5-0.3-,u
Resistor M3iT-0,5-51000-11
Resistor MAT-0.5-3000C-II
Resistor WIT-0. 5-15000-U
Resistor MT-0.5-5100-1I
1 300 kilohms
51 kilohms
30 kilohms
15 ld.lo-ams
5.1 kilob.ms
R1-6
Resistor WIT- O. 5-0.3-11
300 kilohms
1
R1-7
Resistor MT-9. 5-3300-n 3.3 kilohms
1
R1-8
Resistor WIT-0.5-E000-1.1 2 kilohms
1
R1-9
Resistor MJIT-O. 5-3S00-Ii 3,3 kilo-ems
1
al-10
Resistor
51.0 kilohms
R1-11
Resistor
510 kilohms
R1-12
Resistor UT-005-0.1-11
100 kilohms
R1-13
Resistor 100 kilohms
1
R1-14
Resistor wire-wound, 2.02 ohms 2,02 ohms
1
5
I
I
Select ed
during adjust-.
zent
Insctrumen-
-.' .1;f-selected
Declassified in Part - Sanitized Copy Approved for Release 2013/10/28: CIA-RDP80T00246A070500190001-8
0, Declassified in Part - Sanitized Copy Approved for Release 2013/10/28: CIA-RDP80T00246A070500190001-8
a
2
R1-15
Resi-tor: wire-wound:2.02 ohmk
.3)
2.02 ohms
Instrumental-
ly-selected
R1-16
Resistor UST-2-16000-T
16 kilohms
a
R1-17
Resist or UT-0.5-5100-II
5.1 kilohms
a
Selected dur-
ing adjustment
R1-18
Resistor ILDT-0.57-0.37.11
300 kilohms
R1-19
Resist or M-0.5-51000-II
51 kilohms
a
R1-20
Resist or MAT-0.5-0
47 kilohms
Select ed dur-
ing adjustment
R1-21
Resist or 11,1214-0.5-22000-I
22 kilohms
Selected dur-
ing adjustment. 1
R1-22
Resist or MR.-0.5-51000-i
51 kilohms
Selected dur-oa
ing adjustment
R1-23
Resist or 0-15-450o-11
4.5 kilohms
R1-24
Resist or tin-1-2000-II
2 kilohms
R1-25
Resist or UT-1-2000-i I
2 kilohms
1
R1-26
Resist or C11.1-2-10011-43
100 kilohns
Cl-1
Capacitor nrn-1-600--A-2-iii
2 1.2.F
C 1-2
Capacitor 3n-1-60C-2-III1:1
2 ALF
Ci-3
Capacitor 1=-1:2-600-0.01-II
0.01 F
C1-4
Capacitor Mr-1712-600-0.03-H
0.03
C1-5
Capacitor N9i'-i-B- -22 II
20
20 F
Declassified in Part - Sanitized Copy Approved for Release 2013/10/28: CIA-RDP80T00246A070500190001-8
410, Declassified in Part - Sanitized Copy Approved for Release 2013/10/28: CIA-RDP80T00246A070500190001-8
WI"
2
3
4
???????????????????=4
C1-6
Capacitor ICBr-r,2-60o-0.01-II
0.01)uF
1
C1-7
Capacitor
0.03pF
1
C1-8
C1-9
Capacitor iErfl? 2-3 00?A-2?III
Capacitor
2juF
4,)uF
1
C1-10
Capacitor !Ern-2-600-4-111
4)11F
1
C1-11
Capacitor KC0-5 ?B ?500-2700?II
2700 pF
C1-12
Capacitor =0-5?A-500-1500?II
1500 pr
1
C1-13
Capacitor KCO-5?A-500-1500-11
1500 pF
1
C1-14
Capacitor =0-5?B-500-2700?II
2700 pF
1
al-1
a-2
Valve 6 H2I1
Valve 6113G
3.
111-3
Valve 611211
1
21-4
Valve 6113C
1
A1-5
Valve 544C
J11-6
Valve 5U4C
Tp1-1
Tp1-2
VA-3
input transformer
Output transformer
Power transformer
1
1
1
Zpi-1
Choke
B1-1
Change-over switch 2fix9x2
B1-2
Double-pole tumbler switch Till-2
Declassified in Part - Sanitized Copy Approved for Release 2013/10/28: CIA-RDP80T00246A070500190001-8
Declassified in Part - Sanitized Copy Approved for Release 2013/10/28: CIA-RDP80T00246A070500190001-8
?
111111?11
111
?tinn 11111W
In^
fat fore
11111Mikt
^
e
PZAA
On
11104.
Combo
Crew quarters
MI I 10
asow vtial
inummiti?' I mommillkal?iimm
IIImissmitioswomswomortit
* ilrlill.111101111n mom
er dec
Shfora's ;der
e? not
ietr
I Z7V
220
-
rnpllfier
Outlot
Outer rediftiSli
rs-is r
Outer I
rediffusi n
? ...
mot
I ? ? ?
na-
liEper deck lo,
.11.11PM IN
1
at
ou
speaker Inc
II, Outer rediffusion
vie
farads board
prrai- (OM
1
11F+ I
A
?????
^
Power set 1
Mr-3
svEli
111V,1111
illation
r ?517:30A
ZY V-2
nr-i Rol nfq
eala
f17
I
reidiPlicriffiper.
r5171377175-7TI"
1. When ih-e. installati
?7.; I - ships A.C.mains (Variant Mo.!),
i-I' MK-21A ,power sets Amr-3 on
I
II -7-I eluded. The ship's feeder is co
,$)1
and .I14-3110.
cot
2. When me installation is su 4
'lc 1 morns, the jumper between c,
.0. I should be removed
t
6 t)
P*"er 1S I 3. The amplifier, receiver-S c,
--I ? 2:- --i fanning board are located
unit MK-10A.
A*
Declassified in Part - Sanitized Copy Approved for Release 2013/10/28: CIA-RDP80T00246A070500190001-8
Declassified in Part - Sanitized Copy Approved for Release 2013/10/28: CIA-RDP80T00246A070500190001-8
MOP
1
2
5
B1-3-
Change?over switch 111x9
1
A1-1
Cr-oxide rectifier iv1.103-5-1
4
P1-1
Thermorelay
1
P1-2
Relay PICi61
1
P1-3
Relay PKI-IY
1
P1-4
Relay NW
1
C1-15
Capacitor J00-2-B-500-.51O-'III
510 pr
1
C1-16
Capacitor KCO-2-B-500-510-111
510 pF
1
Receiver MIC-12A
R2-1
Resistorgin-0.5-10000-II
10 kilohnis
1
R2-2
Resistor M2T-0.5-0.3-1I
0.3 megohm
? 1
R2-3
Resistor MAT-0.5-22000-II
22 kilohms
1
R2-4
Resistor MT-1-56000-n
56 kilohms
1
R2-5
ResistorILIT-0.5-10000-1"
10 kilohms
1
R2-6
Resistor. WIT-0.5-300-II
300 ohms
1
R2-7
Resistor PIT-0.5-0.3-II
0.3 megohm
1
68 - 300 kilohms
R2-8
Resistor MT-0.5-100097n
10 kilohms
1
R2-9
Resistor MN-0. 5-300-n
300 ohms
1
R2-10
Resistor 1.inT-0.5-0.3-1I
0.3 megohm
1
63 - 300 kilohms
R2-11
Resistor MAT-0.5-10000-II
10 kilohms
1
R2-12
Resistor
0.3 megohm
Declassified in Part - Sanitized Copy Approved for Release 2013/10/28: CIA-RDP80T00246A070500190001-8
? Declassified in Part - Sanitized Copy Approved for Release 2013/10/28: CIA-RDP80T00246A070500190001-8
MIr
2
3
4
5
R2-13
Resistor
1 megohm
1
R2-14
Resistor
2 kilohms
1
R2-15
Resistor HAT-05-1-I1
1 megohm
1
R216
Resistor CH7.1-2-()CO-A-601
0.68 megohm
1
R2-17
Resistor r;j1T-o. 5-68000-Il
68 kilohms
1
R2-18
Resistor M3IT-6.5-0.3-11
0.3 megohm
1
R2?I9
Resistor MAT-0.5-3-11
3 megohms
R2-20,
Resistor MIIT-O. 5-10000-IT
10 kilohms
1
Ea-21
Resistor MAT-0.5-1-II
1 megohm
1
R2-22
Resistor MAT-0.5-3-11
3 megohms
I
R2-23
Resistor MN-03-1500-U
1.5 kilohms
1
R2-24
Resistor
0.1 megohm
R2-25
Resistor /3111-0.12-30-11
0.36 megohm
.R2-26
Resistor YO-0.12-330-1I
0.36 megohm
1
Ra-27
Resistor YAM-0.12-360-1i
0.36 megohm
1
R2-28
Resistor YAM-0,12-3GO*II
0.36 megohm
1
R2-29
Resistor TITC-0.12-3GO-U
0.36 megohm,
1
R2-30
Resistor YAM-0 .12-330-N
0.36 megohm
-1
C2?I
Capacitor KCO-2-5004t-1000?I
1000 pF
1
C2-2
Capacitor KC0-2-500?A-1000?I
1000 pF
1
C2-3
Capacitor, variable
12 ? 495 pF
1
C2-4
Capacitor C0-2-500?A-47 0?IT
470 pF
1
Declassified in Part - Sanitized Copy Approved for Release 2013/10/28: CIA-RDP80T00246A070500190001-8
Declassified in Part - Sanitized Copy Approved for Release 2013/10/28: CIA-RDP80T00246A070500190001-8
\IP
1
2.
C2-5
C2-6
C2-7
C2-8
C2-9
C2-10
C2-11
C2-12
C2-13
C2-14
C2-15
C2-16
C2-17
C2-18
C2-19
C2-20
C2-21
C2-22
C2-23
C2-24
C2-25
C2-26
C2-27
Capacitor
Capacitor
Capacitor
Capacitor
Capacitor
Capacitor
Capacitor
Capacitor
Capacitor
Capacitor
Capacitor
Capacitor
Capacitor
Capacitor
Capacitor
Capacitor
Capacitor
Capacitor
Capacitor
Capacitor
Capacitor
Capacitor
Capacitor
nr-m -6040-0.03-111
KC0-2-500-B-330-1
KCO-2-500-B-330-1
ICS-M1-300-0.nr-m-Goo-o.o3-III
KCO-2-500-B-330-1
KCO-2-500-B-330-1
nr-m -300-0.03-111
nr-H -soo-o.03-III
ur-1 'i-soo-O.03-III
ICEr-M1-600-0. 03-Ill
KC0-2-500-B-330-I
=0-2-500-B-3)0-I
nr-mi-600-0.03-III
-soo-o.o3-111
JCTK-1-7- 100-IL
KTK-1--47-III
!:1111-2-200A-4-111
IE-II-200-0. 02-ill
KEr-M-200-0.02-III
MEM-2-400-1-111
3
4
47 pl.'
1
0.03/u F
1
330 pF
1
330 pF
1
0.03 Ad'
1
0.03 fuF
1
0.03#F
1
330 pF
1
330 pF
1
O. 03 juF
1
0.03 juF
1
0.03 pF
1
0.03 pa'
1
330 pF
1
330 pF
1
0.03 fuF
1
0.03,F
1
100 pF
1
47 pF
1
4F
1
0.02 fuF
1
0.02 tiF
1
ifaF
1
Declassified in Part - Sanitized Copy Approved for Release 2013/10/28: CIA-RDP80T00246A070500190001-8
? Declassified in Part - Sanitized Copy Approved for Release 2013/10/28: CIA-RDP80T00246A070500190001-8
W'
2.
2
3
C2-28
Capacitor KCO-2-500-A-220-1
220 pF
C2-29
Capacitor, variable
12 - 490 pF
C2-30
Capacitor KR-1-8/30
8 - 30 pF
C2-31
Capacitor'KHK-178/30
8 - 30 pP
'C2-32
Capacitor KC0-2:500-A-220-I
220 -011
C2-33
Capacitor KIIK1-8/30
8 - 30 pF
'C2-34
Capacitor KR-1-8/30
8 -30 pF
C2-35
Capacitor 1CC0-5-500-R-2700-1
2700 pF
C.236
Capacitor H11K-1-.8/30
8 - 30 pF
C2-37
Capacitor,KU-1-8/80
8 - 30 pF
C2-38
Capacitor4C0-2-500-B-470-I
470 pF
C2-39
Capacitor O1C-1-8/30
- 30 pF
C2-40
Capacitor KC0-27-1G-7500-220-1
220 pF
C2-41
Capacitor UHN-1-8/30
8 - 30 pF
C2-42
Capacitor laN-1-4.73S-I
39 pP ?
C2-43
Capacitor KED-NI-n?-0.03-'11
0. 03
C2-44
Capacitor =0-5-A-500-1500-III
1500 pP
C2-45
Capacitor =0-2-400-4-W
C27-46
Capacitor :K-1-M-6-II
6 g?
C2-47
Capacitor
6 pF
C2-48
Capacitor
6 pF
1,2-1
Rejector filter collr,"
Declassified in Part - Sanitized Copy Approved for Release 2013/10/28: CIA-RDP80T00246A070500190001-8
0, Declassified in Part - Sanitized Copy Approved for Release 2013/10/28: CIA-RDP80T00246A070500190001-8
Illy
3
5
12-2 I.F. filter plate coil
12-3 I.F. filter grid coil I
12-4 I.F. filter plate coil 11
L2-5 I.F. filter grid coil II
L2-6 I,F. filter plate coil III
L2-7 I.F. filter grid coil III
L2-8 Coupling coil of short waveband II
L2-9 Input circuit coil of short wave-
band II
12-10 Heterodyne circuit coil of short
waveband II
L2-11 Coupling coil, of short wav eband_=1-
12-12 Input circuit coil of short
waveband I
12-13 Heterodyne coil of short waveband I
L2-14 Coupling coil of medium waveband
12-15 Input circuit coil of medium
waveband
12-16 iHeterodyne coil of medium waveband
L2-17 Cou-oling coil of long waveband
12-18 Input circuit coil of long waveband
1
1
- 1
1
3.
1
1
1
1
1
1
With tap
With tap
With tap
Declassified in Part - Sanitized Copy Approved for Release 2013/10/28: CIA-RDP80T00246A070500190001-8
4110, Declassified in Part - Sanitized Copy Approved for Release 2013/10/28 : CIA-RDP80T00246A070500190001-8
VII
2
3
4
5
L2-19
Heterodyne coil of long waveband
1
With tap
22-1 '
Valve 6A7
1
22-2
Valve 610
1
J2-3
Valve 6E3
1
22-4
Valve 6r2
1
32-5
Valve 6E5C
1
H22-1
Neon lamp MH-3
AH2-1
Midget incandescent lamp MH-14
6.3 V, 0.28 A
ALL-2
Midget incandescent lamp 1vH7-14
643 V, 0.28 A
JIH2-3
Midget incandescent lamp MH-14,
6.3 V, 0428 A
1
82-1
Band switch
1
B2-2
Tone switch
Universal electric record player .
1.
YHr.1
Control_ pane jig-!l3A
R3-1
Resistor mat-0.5-510-11
510 ohms
1
R3-2
Resistor MXT-0.5-100?II
100 ohms
1
R3-3
Resist or ma-1-130000-I
180 kilohms
1
R3-4
Resistor m3IT-o.5-22=-11
22 kilohms
1
R3-5
Resistor IZT-0.5-22000-11
22 kilohms
-1
HA3-1
Neon lamp MH-3
AH3-1
, lamp CM-14
26 VI 5 W
1
AH3-2
Switchboard lamp X0-3
24 V, 0.105 A
Declassified in Part - Sanitized Copy Approved for Release 2013/10/28: CIA-RDP80T00246A070500190001-8
Declassified in Part - Sanitized Copy Approved for Release 2013/10/28 : CIA-RDP80T00246A070500190001-8
4
5
AHS-3
7,113-4
AH3-5
AH3-6
a13-7
B3-2.
B3-2
83-3
83-4
B3-
B3-6
B3-7
83-8
P3-1
P3-2
P3-3
Switchboard
Switchboard
Lamp CE-14
Switchboard
Switchboard
Switchboard
Switch KTP0
Tumbler
Tumbler
lamp 4-3
lamp KM-3
lamp KM-3
lamp KM-3
lamp XII-3
V 2:2
switch TR-1-2
switch TR-1-2
Switch KIT? V 3-3
Switch :TPO V 3-3
Switch :TP0 V 3-3
Tumbler switch Tn-1-2
Cam switch IC-33
Instrument of M358 type
Relay PIM
Relay
Relay RKE
24 V, 0.105 A
24 V, 0.105 A
26 V, 5 W
24 V, 0.105 A
24 V, 0.105 A
24 V, 0.105 A
1 raA
a
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1 Alter accord?
ing to draw?
ing
14A4.500.000
I Alter accord?
ing to draw?
ing
WK. 500. 000
Declassified in Part - Sanitized Copy Approved for Release 2013/10/28: CIA-RDP80T00246A070500190001-8
Declassified in Part - Sanitized Copy Approved for Release 2013/10/28: CIA-RDP80T00246A070500190001-8
?
1
3
P3-4
Relay PICI
1
Alter according
to drawing
w.500,000
0
P3-5
Relay PICA
3.
43-i
Signal fuse
3 A
1
43-2
Signal fuse
2 A
1
40-3
Signal fuse
A
1
Hp3-4
Signal fuse
1 A
3.
43;5
Signal fuse
1 A
1
0
48-S
Signal use
2 A
co
43-7
Tube fftse 11R-45
3A (s A)
1
110 V, 127 V-5 A
220V ?3A
43-8
?Tube fuse ITE-45
3`A (5 A)
2.
110 V, 127 V-5 A
220V ?34
43-9
Tube fuse HK-45
3 A (5 A)
1
110 1r, 127 V-5 A
220V 3 A
43-10
Tube fuse nE-45
3 A (5
3.
110 V, 127 V ? A
220 V A
4S-11
Signal fuse
1A
2.
Two?spring socket
ra-2
Socket rIIT 1-2-2
r3 ?z:
soclzt PK 1-2,-2
1
rs-4
Two?spring socket
1
Declassified in Part - Sanitized Copy Approved for Release 2013/10/28: CIA-RDP80T00246A070500190001-8
?
Declassified in Part - Sanitized Copy Approved for Release 2013/10/28: CIA-RDP80T00246A070500190001-8
1
2
1'3- 5
R4-1
C4-1
B4-1
B4-2
B4-3
B4-4
T44-I
3B.4-1
AE5-1
AH5-2
B5-1
Two-spring socket
Resistor n3-15-100-II
Capacitor :XT-11:2-300-0.03-II
Interlock
Interlock
Interlock
Interlock
Selenium stack BC-47
Direct current belly 24 V
-Microphone post i:2-1
Switchboard lamp KM-3
Switchboard lamp IM1-3
Cam switch K-22
B5-2
Cam switch X-22
B5-3:
Cam switch K-22
B5-4
Microphone foot switch (right-
hand)
B5-5
Foot switch
M5-1
Microphone inset Tt3E-41i
M5-2
2.-xtension microphone ;..IH?B
3
4
1
100 ohms 1
o. 03/2F ' 1
1
`(1.1T.-17A)
24 VI 0.105 A 1
24 VI 0.105 A 1
1
1
1
1
1
1
1
Declassified in Part - Sanitized Copy Approved for Release 2013/10/28: CIA-RDP80T00246A070500190001-8
Declassified in Part - Sanitized Copy Approved for Release 2013/10/28: CIA-RDP80T00246A070500190001-8
1
2
3
4
5
HH6-1
AHG-2
B6-1
36-2
B6-3
B6-4
,B6-5
M6-1
M6-2
llic-rophone post I.11-2
(17-1712
1
1
1
1
1
1
0
Switchboard lamp KM-3
Switchboard lamp 1CI17-3
Cam switch K-22
Cam 'switch X-22
Cam switch Kr-22
Microphone foot switch (right-hand)
Foot switch
Microphone inset Z1-4H
Extension. microphone 0-1-E
Power-supply switchboard
24 V, 0,105 A
24 112 0,105 A
MX7-214_
R7-1
Resistor DIT-1-0.12-II
0,18 megohm
1
ua-7
Neon lamp MH-)
3.
137-1
Tumbler switch 1111-45
37-2
Tumbler switch 1111-45
1
Cam switch K-52
1
P7-1
Relay ?KC with contact group
1
. for 20 A
P7-2
Relay PKC with contact group
for 20 A
3.
P7-3
Relay PKC with contact group
for 20 A
1
Declassified in Part - Sanitized Copy Approved for Release 2013/10!28: CIA-RDP80T00246A070500190001-8
4
' Declassified in Part - Sanitized Copy Approved for Release 2013/10/28: CIA-RDP80T00246A070500190001-8
M.
1
2
3
4
5
P7-4
Relay PKC with contact group Lot' 20 A
1
P7?
Relay PKC with contact group Lor 20 A
1
P7-6
Relay PKC with contact group for 20 A
1
P7-7
Relay PIM with contact group for 20 A-
1
P7-8
Relay PKC with contact group for 20 A
1
Hp7-1
Fuze 1B20-30,A
For ship's
Fuse B20-30 A
1
ma4ns=110T-30A
47-3
Fuse 020-30 A
1
=220V--20A
47-4
Fuse 520-30 A
1
Declassified in Part - Sanitized Copy Approved for Release 2013/10/28: CIA-RDP80T00246A070500190001-8
Declassified in Part - Sanitized Copy Approved for Release 2013/10/28: CIA-RDP80T00246A070500190001-8
1 C-O-N-F-I-D-E-N-T-I-A-11
NO FOREIGN DISSMA
0
rdn-N-F-I-D-E-N-T-I-A-L IGROUP 1
!Eded II
xclu from automation
? Declassified in Part - Sanitized Copy Approved for Release 2013/10/28: CIA-RDP80T00246A070500190001-8
50X1