RESEARCH AND DEVELOPMENT EXTERNAL PROJECTS SECTION

• Document Type: CREST
• Collection: General CIA Records
• Document Number (FOIA) /ESDN (CREST): CIA-RDP78-02820A001000060008-6
• Release Decision: RIPPUB
• Original Classification: S
• Document Page Count: 11
• Document Creation Date: December 9, 2016
• Document Release Date: May 12, 1998
• Sequence Number: 8
• Publication Date: December 31, 1964
• Content Type: PERRPT

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RESEARCH AND DEVELOPMENT
EXTERNAL PROJECTS SECTION
December 1961.
1. CV-20 CONVERTER
When the CO/A-8 coder is used with the KE-8 or KE-29 keyers,
it is necessary to convert the resulting complementary eight
level Baudot information to standard Baudot. The CV-20 con-
verter has been designed for this purpose. The converter is
interface between a magnetic tape reproducer and a standard
100 WPM M-28 teleprinter. The signal from the tape repro-
ducer is an interrupted 800 cps to 6 KC tone which is con-
verted to a standard Baudot format capable of neutral current
keying a 20 to 60 MA, 120 volt line. Additional characteris-
tics of the CV-20 include a stacked visual display; one CRT
provides a frequency display as an aid to tuning the incoming
signal to the center of the band pass filter; the second CRT
displays where the adjustable sampling point occurs within
the bit stream. The CV-20 is powered from a 110/220 VAC, 50/
60 cps power source.
The development stage was characterized by the usual minor
problems (unwanted noise, excessive hum and distortion of
signals), but these problems did not develop into major pro-
portion. Two prototypes were delivered to R&D in November,
1961+, for a preliminary evaluation. Initial results indicate
that noise-free input signals produced virtually error free
copy. However, when noisy signals were used or instantaneous
speed variations were evident from the tape reproducer, many
errors were produced in the M-28 copy.
To compensate for the effects of poor signal-to-noise ratio
and/or speed variations, the bandwidth of the tone filter was
increased from 180 cps to 5 KC. Additional tests were per-
formed and significant improvements were evident in the output
of the modified unit. Both units (one modified) are presently
at the Lab for an AM,, and an error comparison will be made
upon completion.
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2. CV-19 BAUDOT-TO-MORSE CONVERTER
a
The CV-10f audot-to-Morse converter which /206o ally con-
verts teleprinter tape used with a standae "TD" to
a Morse code output suitable for keying a er over a
keyline. The Morse code output is variabo 30 WPM
and is capable of neutral current keying MA, 120
volt line. Special functions incorporateV-19 are:
long number conversion to a cut number syand ACN)
and a reversal mode (Letter). This equip eveloped
primarily to replace a variety of machineployed in
base radio stations in the preparation of auto-Morse broad-
cast tapes,, the keying of transmitter in the auto-Morse mode
and the conversion of Baudot tape to Morse signals.
A contract was initiated with 25X1 A5a 1
for the design and development of the CV-19 converter in June,
1963. Two prototypes were delivered to the Lab for A&A and
were found to be well designed and operationally acceptable.
The balance of the production quantity (18 units) was delivered
in May, 196+ and the contract was terminated shortly thereafter.
While this development was relatively straightforward., some
minor problems have developed in the field with the CV-19ts.
In at least three separate instances, a number of P.C. boards
were found to be warped and extremely difficult to reinsert in
their respective connectors. Since only a limited history is
available at this time, the extent of this problem is not
known. However, the contractor is presently investigating
methods of alleviating this condition in the new production run
of the CV-191s. It should be mentioned that the CV-19 won fast
acceptance in base stations, becoming a work-horse item from
the start.
3. CV/A-19 BAUDOT-TO-MORSE CONVERTER
Based on the popularity of the CV-19, an additional quantity
was desired. Reflecting several improvements, the second
production item is called the CV/A-19. The CV/A-19 is a
Baudot-to-Norse converter unit which automatically converts
teleprinter tape used with a standard teletype "TD" to a Morse
code output suitable for keying a transmitter over a keyline.
The primary function of the CV/A-19 is identical to the CV-19;
however, certain additional features have been added to the
CV-19 to extend its versatility. Two of the major modifica-
tions are: (1) provide the capability of operating over a
keying range of 3 to 300 WPM Morse code rather than the present
3 to 30 WPM keying rate; (2) provide for local operations through
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the mounting of a parallel tape reader unit on the front
panel of each new converter. To provide the same local/remote
feature to the CV-19's now in service, a separate tape reader
assembly is being developed. This reader, called the TR-l,
will be packaged for mounting in a standard 19" rack and will
be a dual unit consisting of two individual tape readers, each
serving its respective CV-19. In addition, an MWO is being
written up to provide the higher keying rates in the CV-19's
now in the field.
A contract was initiated in November, 1964, for the procure-
ment of twenty CV-19 converters. An amendment to incorporate
the above modifications is presently being initiated. Deliv-
ery of the CV/A-19 is scheduled for June, 1964.
4. CV-22 MORSE-TO-BAUDOT CONVERTER
25X1A
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The CV-22 is a Morse-to-Baudot converter which translates
incoming 300 WPM standard horse to standard Baudot code. Sig-
nal source for the CV-22 is the CV-13 frequency converter whose
output is a 10 KC signal. The CV-22 provides a six bit paral-
lel information signal compatible with the input of the DR-4
visual message display and teletype readout system.
The DR- automatically stores the incoming message from the
converter on a rotating magnetic drum and displays it on a 17
inch CRT. The drum can also feed a modified M-28 typing
reperforator operating at 100 WPM.
The CV-22 represents the second attempt at providing a code
converter for the DR-4. The initial converter, built by
as part of the DR-4, proved to be
uns a e an a or mic range. A second contractor,
was found to have a
proprietary Morse-to-Baudot converter which could be modified
to meet our requirements.
25X1A5a1
A contract was initiated with for the development of the
CV-22 in April, 1964. One prototype was delivered to the Lab 25X1A5a1
and mated with the newly refurbished DR-4 - in November,
1964. A preliminary operating evaluation uncovered a few
minor problems with the IDY and EOM signals. Noise resulted
in random characters being generated before and after the
message. Methods are presently being investigated by = to 25X1A5a1
eliminate these unwanted characters. A request for A&A has
been initiated.
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5. HG-l00 HANDCRANK GENERATOR
The RS-100 program has a requirement for a rugged, lightweight,
portable, handcranked generator. This generator designated the
HG-100 will be capable of supplying 75 watts of average power
and 150 watts of peak power at a regulated 12 volts DC. Weight
and size reduction is a primary design goal with upper limits
of 10 pounds and 230 cubic inches, respectively.
At the time the RS-100 program was initiated, we surveyed
industry and military sources to determine their state-of-the-
art and progress in the hand generator field, and learned that
the military (uSAELRDL) was engaged in a thorough study and
development of the tactical generator problem which would
result in a unit (the G-51.) very close to our RS-100 require-
ment. Whereas the G-54 delivers 50 watts, the HG-100 shall
deliver 75 watts from a nearly identical package.
IIIIIIIIIIIIIIIIIIIIIIIIIIIhas been under con- 25X1 A5a 1
tract for several years developing -the G-54. This work has
provided an excellent foundation of engineering design which
will now permit construction of the HG-100. - has sub- 25X1A5a1
mitted a proposal for the development and construction of
twenty HG-100 service test models. This proposal has been
accepted and a contractual agreement with - is now 25X1A5a1
being negotiated. The first HG-100 is scheduled for delivery
in June, 1965-
6. RT-66 TRANSMITTER -
The contract to develop the RT-66 was initiated on 29 June
1961+. The transmitter was delivered on 22 December, three
and one-half weeks ahead of schedule. According to the con-
tractor's test data, this transmitter meets all of the spec-
ifications, which are essentially the same as for the RT-1+9
transmitter, the exception being a minimum of 20 watts output
over the band and the use of 12 volt DC for all power supply
voltages.
The RT-66 project was initiated when we discovered that
has had considerable experience designing solid-state high
power HF transmitters. Most of this experience was accumu-
lated designing such items as the AN/PRC-70 and the PT-5. We
discovered these talents when the company bid for the manufac-
ture of the RT-1+9. They were not low bidder for the RT-1+9;
however, they had so many good ideas that we decided to exploit
their capability.
25X1A5a1
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By way of comparison, the RT-66 is about 2/3 the size of the
RT-49 and, of course, does not require a DC-to-DC converter
or special battery pack for its operation. The actual size
of the unit is 1 1/2" x 4" x 3 5/8" and the weight is 1.22
pounds. According to the test data, this transmitter 25X1A5a1
is also superior to the RT-49 in harmonic suppression and in
fundamental feed-through. The efficiency of the transmitter
varies from in the worst case up to 58% in the best case.
The RT-66 will be sent to the R&D laboratory for analysis and
appraisal and then to OC-OS for operational evaluation. We
can see areas where improvements can be made to this transmit-
ter; however, the design is very attractive for an engineering
model and it appears that it will be a useful agent device.
7. SY-3 VOICE MESSAGE SYNTHESIZER
In June, 1963 a contract was awarded to 25X1 A5a 1
for the manufacture of ten SY-3A voice message synthesizers.
These synthesizers were capable of storing eight bands of 100
eight-second messages for transfer to standard 1/4" magnetic
tape for broadcast. This production contract was based upon 25X1A5al
development model of the SY-]A from Though the ten
production units were representative of the development model
and met all technical specifications, they were complicated
to operate and were slow in operation. It was determined
that assembly of the final program tape used for broadcast
should be as automatic and rapid as possible. Mechanical limi-
tations inherent within the SY-1A precluded modifying it for
faster operation, so it was decided to solicit proposals for a
new synthesizer to meet the new requirements. This new synthe-
sizer shall be referred to as the BY-3.
The SY-3 will be a one-way voice message synthesizer designed
to prepare a voice message program tape from a master storage
medium for broadcast. Information may be selected from the
master storage medium by either a keyboard or a Baudot code
paper tape reader input. The program tape assembled for
broadcast shall have a variable group rate from 5 to 15 word
groups per minute. The master voice storage medium shall be
easily interchangeable for different areas and/or languages
of operation. In addition, information shall be readily
recorded and erased from the master storage medium.
Proposals for the development of an engineering model are
currently being solicited and qualified contractors. Propo-
sals are due by 19 February 1965 and this contract should be
awarded by 1 March 1965.
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9. OS-12 FREQUENCY OSCILLATOR
The OS-12 is a compact, stable variable frequency oscillator
for transmitter excitation. It is to have frequency range of
2 - 30 MC; all spurious levels at least -65 db, and an accur-
acy of ?140 cps at 2 MC to ?1000 cps at 30 MC. The final
package is to be 6 to 8 cubic inches. One engineering model
is scheduled for delivery 28 May 1965.
The rime advanta of this unit is that it is designed to
provide excitation th accuracy comparable to our synthe-
sizers at less coat. It is not termed a synthesizer, as it
does not have t " accuracy of its reference frequency.
The project s initiated 28 October 196+ and has remained on
schedule t s far. The first phase of the program included
primari the design and performance evaluation of circuits
deemed o be critical. These critical circuits include two
VCO's the spectrum generator, two mixers, the IF amplifier,
and he frequency/phase detector.
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All of the above critical circuits have been breadboarded
and evaluated as scheduled and are no longer considered
critical. These breadboards have now been interconnected
in the phase locked loop, which is now pulling and locking
in all but 5 KC at each end of the desired 1 MC range.
One month is left in the schedule for evaluation of the
phase locked loop. A DC amplifier will be built and incor-
porated to supply the voltage needed to enable the loop to
pull and lock throughout the entire 1 MC design range goal.
will be holding a design review 21 January 1965,
at which time all circuits will have been breadboarded.
From this point on primary emphasis will be placed on what
is practical; viz., cost and size considerations, packaging,
and minimizing power consumption.
lo. RS-l+3 MICROWAVE COMMUNICATIONS SYSTEM
In April of this year, was author- 25X1A5a1
ized to proceed with the fabrication of eight service test
model RS-43 sets on the basis of our satisfactory evaluation
of the engineering models. The road had been long and filled
with disappointments, but there was a good deal of confidence
that the engineering models could be easily reproduced (with
the necessary minor changes) and the service test models
would be delivered in September. Such was not the case; the
first two service test models were delivered this month.
Construction started to lag in June because of late delivery
of many purchase parts, including both components and chassis
castings necessary to complete the subassemblies. The mixer-
switch-IF subassembly developed two major problems; the diodes
would not switch and the 10.7 MC IF frequency was circulating
within the subassembly package, causing regeneration and, con-
sequently, loss of receiver sensitivity. The diode manufac-
turer had discontinued the diode which the switches were
designed to use, and the new diode did not operate properly in
the circuit designed for the original diodes. This problem
was solved by redesigning the biasing networks around the par-
ameters of the available diodes and by measuring and matching
the diodes used in each switch. The regeneration was found to
be caused by the 10.7 MC IF frequency setting on the switch
diodes through their biasing leads and being fed through the
switch and mixer to the IF amplifier input. This problem was
solved by reworking the switch chassis to allow room for line
filters in the switch bias lines.
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Major problems were also encountered in the solid-state
source. The power required to operate the system was not
developed. First, the transistors in the multipliers and
the power chain had lower gain than the pilot production
models used to build the two engineering models and were
not developing enough power to drive the varactor multi-
pliers; and second, the final varactor tripler was not as
efficient as those in the engineering models. The driver
amplifier was reworked to provide for two transistors in
parallel operation, and the varactor multiplier which was
driven by the power amplifier was changed from a shunt-
type circuit to a series circuit.
As a result of these changes, we received two service test
models that are significantly superior to the engineering
models. Power output in the transmit mode has been improved
from less than 20 milliwatts to more than 4+0 milliwatts.
Local oscillator radiation in the receiver mode has been
reduced from more than .11 milliwatts to less than .02 milli-
watts. The minimum discernible signal in the receiver has
been reduced from 1.2 millivolts to .7 millivolts. The cur-
rent drain has been reduced by 10%. The operating voltage
range has been increased from 13-15 volts to 1Q-15 volts.
Two RS-43 service test models are presently at the R&D Lab
for analysis and appraisal. The remaining six sets will be
delivered in January and February.
11. AR-20 AUTOMATIC SCANNING BASE STATION RECEIVER
The AR-20 is an automatic scanning base station receiver for
the reception of unscheduled agent transmissions. This
receiver is capable of receiving on as many as 2,800 differ-
ent 10 KC wide channels between 2 and 30 MCS. The receiver
is programmed to sweep only selected channels and a maximum
of 7 MCS bandwidth can be assigned for observation at any one
time. Sweep time is a direct function of the number of
channels programmed requiring five seconds for the maximum of
7 MCS.
25X1 A5a 1 In June of 1964 contracted to
construct the AR-20 at a cost of $196,183. The program will
result in the delivery of one prototype receiver in March,
1965. Approximately 80% of the system has been fabricated
and of this amount about 50% has completed testing and is
ready for installation into the equipment drawers. When com-
plete, the station will occupy two standard equipment racks.
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Recent discussions with M have indicated that a number of 25X1A5a1
modifications can be made to the AR-20 which would increase
the receiver's flexibility, thereby adding to its usefulness 25X1A5a1
in an operational environment. At our request, Msubmitted
proposals for making seven modifications to the AR-20 equip-
ment. Two of these changes, the multiple band recording and
the multiple antenna switching, are unnecessary at this stage
of development and are not being requested. The remaining
five modifications are critical to the subsequent operation
of this prototype and shall be incorporated into the equipment.
These changes are as follows:
a. Frequency Display - This unit is needed to indicate the
exact 5 KC subchannel from which information is being
recorded. With this readout an operator can directly
determine the activated subchannels.
b. 5 KC Channel Selection - The selectivity of the present
design is 10 KC. Reliable reception of agent broadcasts
is significantly improved if the selectivity is narrowed
to 5 KC.
c. Adjustable IDY - Recognition depends upon there being a
short interruption in the IDY signal. The exact position
and duration of this interruption is difficult to assign
until field-tested. An adjustable IDY in the AR-20 would
allow the recognition circuit to be easily adjusted to the
optimum sequence.
d. Subchannel Block Out - When portions of the HF spectrum
being scanned exhibit signal patterns which are either
particularly troublesome or allocated to other services,
then it is desirable to have a means whereby discrete sub-
channels can be bypassed without eliminating adjacent
pertinent subchannels. The subchannel block out unit would
allow this mode of operation.
e. Removable Program Board - The AR-20 has a program board
that tells the receiver which subehannels to scan. Remov-
able boards would allow the operator to set up several
scanning programs in advance. At any desired time the
boards could be quickly interchanged thus allowing a mini-
mum of off-the-air time.
These channels will cost $53,430 and require approximately
thirty additional days for completion.
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12. HG-49 MINIATURE HANDCRAN.K GENERATOR
The HG-49 is a miniature handcranked generator for charging
batteries associated with the RS-49 equipment. The complete
generator measures 2 1/4" x 3 3/4" x 5 1/2", enclosing a 10-
watt alternator driven by conventional spur gears. The 1000
cps output is current regulated to 90 MA for charging the
BS-49 battery supply. The battery pack contains a diode
bridge for rectification of the A.C. from the HG-49. Other
charging rates are possible by exchanging regulator circuits,
thereby allowing the generator to charge other batteries.
25X1A5a1
25X1A5a1
in the handcranked generator
field and is submitting a proposal to develop the HG-49.
is basing their design on a feasibility model they
have constructed and demonstrated to be potentially capable
of meeting our requirements. Delivery of the first prototype
HG-49 is expected within ninety days of contract initiation.
25X1A9a
TRANSFERS
N. A.
PCs
N. A.
16 December 25X1A
16-17 December
18 December
18 December
2 December
15-16 December
15 December
17 December
14 December
27-28 December
16 December
16-17 December
18 December
18 December
15-16 December
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RESIGNATIONS
N. A.
EFFECTIVE PROMOTIONS
N. A.
TRAINING
N. A.
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