RS-511, RS/A-511 RADIO SYSTEM

• Document Type: CREST
• Collection: General CIA Records
• Document Number (FOIA) /ESDN (CREST): CIA-RDP78-03330A000700150001-3
• Release Decision: RIPPUB
• Original Classification: K
• Document Page Count: 10
• Document Creation Date: December 27, 2016
• Document Release Date: May 29, 2014
• Sequence Number: 1
• Content Type: REPORT

Declassified in Part - Sanitized Copy Approved for Release 2014/05/29:
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RS-511, RS/A-511 Radio System
Declassified in Part - Sanitized Copy Approved for Release 2014/05/29:
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STAT
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A. DITRODLCTIOI
1., The RS-511 and RS/A-511 are compact single-unit portable radio
systems. The transmitters have a rated output poser of 10-16 watts
depending on frequency. They are designed for either manual or
medium speed CW operation. Receiption is either CW or AM (VOICE).
2. The operating Characteristics of the two systems are identical
except for frequency coverage. Therefore, the instructions contained
in this annual apply to either set.
3. The frequency range of the RS-511 is 3 to 16.5 megacycles (MC)
divided into two bands':
LOW - 3 to 7 MC - (SLUE position on the control switches)
EIOR - 7 to 16.5 mC - (BED position on the control switches)
4. The frequency range of the RS/A-511 is 4.5 to 22 me divided
into two bands:
LOW - 4.5 to 10 MC - position on the control switches)
HIGH - 10 to 22 MC - RED position on the control switches)
5. The poser source for these systems must be alternating current
(AC) rating between 90 and 250 volts, a.frequency rating between 50
and 400 cycles per second, and a power capability of at least 100
setts. A band-powered generator possessing these Characteristics may
be used as a power source.
6. In addition to a suitable power source, a good antenna and
ground are required to make the system complete. The most suitable
antenna for the system is one which exhibits the electrical characteristics
of a single vire antenna three quarter wave lengths long.
7. Since radio frequencies are normally shown in either kilocycles
(EC) or megacycles (MC) and the frequency markings on the 58-511 are in
megecycles, these terms must be understood. 1000 kc equals 1 mc.
Merely move the decimal point three places to the left to convert
kilocycles to megacycles or three places to the right to convert mega-
cycles to kilocycles. For example, 6322 kc is equal to 5.322 mc and vice
'versa.
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for BRED only, HEC only, or SEED-SEC
break-in operation, as desired.
9. Before proceeding to paragraph B, turn to the pictorial
Illustration of the BS-511 and beccme thoroughly familiar with its
component layout and the names and locations of the various operating
controls.
10. An accessory lamp, which is included in the system, may be
plugged in and used as a work lamp.
B. CONNECTING THZ STEM FOB OPERATION
1. Unlatch and open the suitcase cover of the system.
2. Be sure the AC line switch (1) is set to the OPP position.
3. Connect the antenna and ground lead-in wires to their respective
terminal. posts (6 & 5).
4. Open the LIES COED AND SPARE PARTS compartment (24), extract the
two-prong line cord plug, and connect it to the power source. (The
universal-type line cord plug can be adapted to the power outlet by
reversing the prongs or by splitting off one part of each round prong
to make it fit a flat blade receptacle).
5. Connect the earphones to the receiver by inserting the pine
into the receptacles marked MONKS (16).
C. PFSSEMING THE TBANMUTTEE TUNING COMMIS
1. Insert the crystal for the desired transmitting frequency in
the CRYSTAL socket (12).
2. Set the two transmitter range selector slide switches ( 9 & 11)
to the setting which includes the desired operating frequency. (The
range of each frequency band is printed on the case beside the switches,
and each range is color-coded. Both switches must be set to the
same color.)
3. Sal calibrated tuning dials 1 and 2 (10 & 10) to the approximate
operating frequency. Be sure colors on the dials match each other and
the range switch colors (Step 2). The markings 1 and 2 for these two
controls are printed on the transmitter control panel.
4. Set the SEED-EEC switch (8) to SEND.
5. Set the KE1EB-MANUAL switch (14) to mAnum.
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6. Set switch 3 (13) to zero.
7. Turn power ON by moving AC LIME SWITCH (1) from OFF position
in a clockwise direction to a numerical setting which will cause the
nearby meter indicator (2) to point to. the OHM. (WARNIN3: DO ECT
ADVANCE LINE SWITCH FURTHER OR THE LINE FUSE NAY FAIL).
11111 D. TUNING TEE TRUEDOMITE
1. Doable-check all steps outlined in paragraphs B and C. The
control identification numbers in the following steps of this section
refer to the numbers printed on the transmitter control panel.
2. Press the SEND key and tune variable control dial 1 until the
associated neon light glows most brightly. Release SEND key.
3. Press key and adjust variable control 2 to obtain the brightest
glow in the number 2 neon bulb. Release key.
4. Press key and readjust control 1 slightly to increase
brilliance of neon 1. Release key.
NOTE: With some crystal/frequency combinations, it may be impossible
to obtain a distinct brilliance in control 1 light. When this happens,
tune control 1 for peak brilliance of contra 2 light.
5. Press key and turn control 3 to the position where control 3
indicator light glows most brightly. Release key.
6. Press key and readjust control 2 for peak brilliance of
control 3 light.
7. The transmitter is ready for manual operation.
8. For medium speed operation, set the KEYER-MANUAL switch to
ESTER.
E. TUNING THE RECEIVER
NOTE: One antenna serves both the transmitter and the receiver. It
is connected to the receiver whenever the transmitter is not being keyed.
The receiver is on and operative whenever the AC power is on and the
meter reads in the GREEN. The position of the SEND-NEC switch does
not affect the receiver. Setting the switch to NEC merely turns the
transmitter OFF and conserves power when operating in EEC only mode.
1. Perform all steps outlined in paragraph B and sub-paragraph C-7.
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2. Determine the frequency to be received.
3. Set the BAND SWITCH (15) to the range which includes the
frequency in no to be received.
NOTE: Two scales will be observed in the tuning dial window (20).
Each scale is tinted in color to match the numbers and colors on the
BAND SWITCH color setting.
4. Adjust the TUNING dial (19) to the approximate receiver
frequency as read in no beneath the hairline indicator in the tuning
dial window.
5. Turn the VOLUME dial (17) in the direction of the arrow
until a alight rushing sound is heard in the earphone.
6. Calibrate the receiver:
a. Turn the TUNING dial (19) to a dial marking ending in
zero of five (.0 or .5) nearest to the receive frequency.
b. Disconnect the antenna from the APN2MA terminal post (6).
0. Tarn the BP0 dial (22) until its zero mark is aligned
with the index mark on the housing.
d. Hold down the button marked PRESS TO CALIBRATE (23).
e. Move the tuning dial slowly While listening in the
earphones for a tone Which Changes in pitch from high to low to
high as the dial is turned. Adjust the TUNING dial to the "no-
sound' center-point between the two tone peaks. Release the
PRESS TO CAL button.
f. 'it= the CAL ADJ dial (21) to move the hairline indicator
directly over the .0 or .5 calibration marker in the tuning dial
window.
g. Turn the TUNING dial until the desired frequency is aligned
with the hairline indicator in the tuning dial window.
h. Reconnect the antenna.
7. Listen for the desired signal. Increase volume slightly. If
the desired signal is not heard, rotate the TUNING dial from the low
frequency side of the dial slowly through the desired frequency setting
in search of the signal. Exercise care in listening; the signal may be
weak. Look as far as three dial divisions to each side of the desired
frequency setting. Always tune from low to high.
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8. After locating the signal, tune to the "no-sound" notch
(as with the CAL AN tone in 6. above).
a. For CW signals, vary the /WO until the loudest pitch is
obtained.
b. For AN (VOICE) signals turn the IWO off by turning it
1800 until zero is opposite the /WO panel index mark.
9. Adjust the volume dial to the lowest setting possible without
destroying audibility. (More noise is fed to the earphones with high
VOLUM settings.)
NOTE: The LOO SCALE of the receiver maybe used to record dial settings,
after calibration, st which desired signals were located.
P. =mum sno KRIM
14 Learn to use the special coders, keyers and cartridges required
for medium speed operation in accordance with the separate instructions
provided.
2. Prepare medium speed message cartridges in accordance with
special message writing instructions.
3. With the equipment AC LINE switch (1) at "0" or off, look in
the LINE COED AND EWAN/ PARM (24) compartment, locate and disconnect
the seven-pin plug from its socket.
NCTE: To prevent damage while stored, the seven-pin plug on the keyer
amble is kept plugged into a seven-pin socket located on one wall of
the storage compartment).
4. Connect the keyer to the seven-pin plug.
5. Attach the message cartridge to the keyer.
6. Set the EWIER-NANUAL switch to NETER.
7. Bet the SEND-BEC switch to BEND.
8. Ensure that the entire 118-511 system has been prepared for
operation in accordance with paragraphs B, C, D, end D.
9. Operate the keyer according to radio operating instructions.
Note that during medium speed transmissions all transmitter tuning
lights will flicker during transmission.
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G. ERASING MEDIUM SPEED MESSAGE CARTRIDGES
1. Set ENTER-MANUAL switch to ENTER.
2. Set SEND,REC switch to REC.
3. Attach keyer to the seven-pin plug as in paragraph F above.
4. Turn on R8-511 system AC power until meter indicator reeds
in GREEN. See sub-paragraph C7.
5. Attach the cartridge to the keyer.
6. Follow keyer/cartridge message erasing procedures.
N. OPERATION FROM NAND CRANKED GENERATOR
Operation from a hand cranked generator power source should be
accomplished in accordance with instructions issued with the generator.
I. MAINTENANCE
1. The 55-511 contains the following spare parts:
4 each, Type 49 incandescent lamps, replacements for the antenna
output indicator (Switch 3).
4 each, Type 47 incandescent lamps, replacements for the accessory
light.
10 each, Fuse 3 AG, 2 ampere, replacements for the power
supply fuse.
1 each, Ithe 5618, replacement for the transmitter oscillator.
1 each, Tube 2E24, replacement transmitter power amplifier tube.
1 each, Earphones, extra headset.
2. Unless otherwise instructed, field maintenance of the RS-511
should be limited to spare parts substitution. Proceed as follows:
a. Accessory light fails to illuminate. Unscrew metal lamp
cover, depress lamp and twist counterclockwise. Litt lamp out of
socket and replace with a spare type 47 lamp. Insert new lamp,
depress and twist in a clockwise direction. Replace lamp cover.
b. Mia indication of antenna output. Check indicator lamp.
Unscrew lamp cover, depress lamp and twist counterclockwise.
Lift lamp out of socket and replace with a spare type 49 lamp.
Insert new lamp, depress, and twist in clockwise direction.
Replace lamp cover. If trouble persists, see sub-paragraphs C
and D below.
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_ster indication. Disconnect power plug from
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AC mains, then check fuse located between send key and antenna/ground
terminal. If visual inspection Shows thin metal strip in glass
tube is broken replace fuse. Vase cover is removed by turning
in counterclockwise direction and replaced by turning clockwise
while pressing into position lightly but firmly.
d. Low power output. Trouble may be a defective crystal.
Try a different one. Trouble maybe a defective tube. Check
defective tubes as follows:
(1) Remove ten unpainted screws located along the edge
of the transceiver cover place.
(2) lift Chassis carefully out of container and turn
upside down on a flat surface using care to keep weight off
panel controls.
(3) Identify transmitter section in center portion of
chassis.
(4)
(5)
(6)
Locate transmitter tubes type 5618 and 2624.
Remove and replace both tubes with spares.
Replace chassis in container.
(7) If the transmitter now works normally, it is probable
that only one of the two tubes is defective. Should time permit,
the defective tube can be identified by replacing the original
tubes individually as follows: restore the original 5618 tube
to the set and test. If set fails to work properly, this tube
is defective. If normal operation is obtained, restore the
original 2E2h. tube to the transmitter. If the set fails to
work, this tube is defective. Discard the defective tube.
K. ILLUSTRATIOB
1. Transmitter
1 - AC Line Switch
2 - AC Meter (Indicator should point to GREEN)
3 - Send Rey
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5 - Ground Terminal Post
6 - Antenna Terminal Post
7 - Notation Plate (For operator convenience)
8 - SEND-REC switch
9 - Oscillator Range Selector Switch No. 1
10 - Calibrated Tuning Dial Nos. 1 and 2 and Neon Indicators
11 - Amplifier Range Selector Switch No. 2
12 - Crystal Socket and Crystal
13 - Antenna Loading Switch No. 3 and Light Indicator.
14 - EgIER-MANUAL Switch
2. Receiver
15 - BAND SWITCH Selector
16 - PROBES, Earphone Receptacles
17 - VOLUME Control
18 - LOG Scale
19 - TUNING Dial
20 - TUNER Dial Indicator Scale
21 CALIBRATE ADJUST Control
22 - 260
23 - PRESS TO CALI:BRATS Button
24 - LINE CORD AND SPARE PASTS Storage Compartment
25 - Plug-in Accessory Lit
26 - Coder Storage Slot
27 - Sayer Storage Slot, with keyer in place
28 - Cartridge Storage Slots (3 unit capacity), with cartridges
in nance.
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ILLUSTRATION
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