PROJECT MONITORS AT (SANITIZED) RD-61SA, TASKS I-IV

• Document Type: CREST
• Collection: General CIA Records
• Document Number (FOIA) /ESDN (CREST): CIA-RDP78-03172A000300030004-3
• Release Decision: RIPPUB
• Original Classification: S
• Document Page Count: 9
• Document Creation Date: December 22, 2016
• Document Release Date: February 22, 2012
• Sequence Number: 4
• Publication Date: June 11, 1956
• Content Type: MEMO

Declassified in Part - Sanitized Copy Approved for Release 2012/02/22 : CIA-RDP78-03172A000300030004-3
11 June 1956
1 10BANDUK Fes: THE RECORD
Project Monitors at
RD-61sa, Tasks I -
1. Time and Place of Meetinks: The meetings Were held at the
on 2 and 31 May 1956.
2. Attendance:
3. ETXS6-e of Mee The meetings were held to review
progress on the various projects. In particular, the following
were discussed:
Ad Hoc #6 -
Ad Hoc #43 ~
RS-1 & 2 - Radio Switch
Specifications for -
ST-2
J-1630 $ D
RC -1
4. Discussion:
The discussion of AH-6, AH-43, and RS-1 follows on separate
sheets for ease of filing. In addition, a preliminary outline of
environmental tests for the various production items such as the ST-2,
RC-1, J-1630 is appended. Much further work is required on the state-
ment of these tests, especially regarding the performance of the equip-
ment when the unite are operating satisfactorily.
a "t Ty` _ ..~ LAI
Wry
f
Its V
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a. Ad Hoc #6 ~ LProject
Progress on Ad Hoc ;6 has been very slow. The first
breadboard is still unpackaged and still has noticeable harmonies
up to and including the seventh at 595 kc in the low end of
the broadcast band. No quantitative measurements of the
harmonics have been made.
A t deal of noise was present. The cure suggested by
An impropte test was run between~ office and the
basement in the with unsatisfactory results.
improvement of the present 10 my receiver sensitivity
to increase limiting.
It appears that pressure should be applied toU on this
project. To quote the memo for the Record of 4 April 1956:
"Progress an this project has been slight.
The receiver has been shifted to
85 kc and transformers for this frequency have
been wound for the transmitter. A low pass
filter is being designed.
was requested to have the unit at 85 kc
with he row pass filter packaged in the condenser
can by 1 YAW* At that time the machine should
have arrived and the installation can a tscle."
The machine indeed did arrive, but that seems
to be about all that has happened since 4 April. Dur, that
has been on the project full time
hen been supervising or at least he was supposed to
be supervising.
25X1
25X1
25X1
25X1
25X1
25X1
could not have been found before the APD visit. In short,
pressure needs to be brought to bear on Ad Hoc #6.
b. Ad Hoc `4
This meeting was held to acquaint with
25X1
the present status of the~work and to coordinate the
joint efforts of both companies.
25X1
delivered a finished 7000 ohm transducer to
25X1
The unit has a linearity of about t if.
25X1
There is no reason why quantitative measurements of the
harmonics both on the line and radiated could not have been
made. There is no reason why a definite report on the
harmonic situation could not have been ready. There is not
any reason why the noise difficulties and receiver insensitivity
Declassified in Part - Sanitized Copy Approved for Release 2012/02/22 : CIA-RDP78-03172A000300030004-3
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W W
=bas had== on the project for several weeks.
Preliminary experiments have been made on a ferrite rod
antenna operating about 2-5 mc.arA installed
It appears that such an antenna is feasible
=has done some thinking on the scheme of modulation
to be used. Present l s fre uene shift modulation with a
shift of 100 cps or a total shift of 4 kc,
is being conside r u power to the antenna of
about 10 to 50 mw. and a life of 1 month are also design
goals.
Since an average operating time of 4 hours per day is
believed to be reasonable, it is apparent that a switching
system all. the monitor to be compi%tely shut off when
the is not in use will save a factor of 1/6 in battery
size. To make this saving possible,, has been requested
to try the following modification in the transducer.
Before
A-0 .1 B
Resistive Stripe
will report by 30 June the feasibility of this change.
The basic decoder work at will be continued after the
transducer modification. investigation of coaeoatrcially
available will be made. If
possible, a coapleta decoder will be built although
the present contract s no require it due to an extension of
scope without increase of funds.
c. R8-1 and 2 - Radio Switch Receivers
The complete breadboard of the RS-1 was demonstrated
at the 24 May monitor. The unit operates on a 14.3 me carrier
amplitude modulated at 3200 cps. A signal of 10P volts is
more than sufficient for reliable operation. The unit will not
25X1
25X1
25X1 I
25X1
25X1
25X1
25X1
25X1
25X1
25X1
25X1
25X1
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operate on a 10 my signal for carriers more than O.J. mc awray
from 14.8 rec. or audio modulation more than j!) cps frog 32^C
cps. No tests were made on radiation from the receiver local
oscillator al.nee a fair test cannot be made until the receiver
is properly packaged and shielded.
Printed circuit boards have been designed and are be irk,;
constructed for the unit.
An R&D re,luirenwent describing the operational characteristics
of both units is enclosed with this memo.
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 Declassified in Part - Sanitized Copy Approved for Release 2012/02/22 : CIA-RDP78-03172A000300030004-3
Appendix Notes on
Environmental Tests or ST-21 Transmitter
V ibrat ion
Cycling:
Vibrate equipment, in operating condition with output monitored,
from 5 to 60 cps, 0.016" double amplitude; making one cycle in
10 minutes. Make two cycles. Locate resonances.
Vibrate equipment at the resonance met likely to produce
failure for 1 hour or divide the time equally between
resonances ff more than one exists.
Repeat above for all three mutually perpendicular planes.
Follow up with visual and electrical Letts to determine fatigue
or damage.
(The exact method of determining resonances to be left to
Both visual and electrical means to be employed.)
The shock tests shall be conducted by dropping the units three feet
onto a concrete floor covered with asphalt tile. The units shall not
be packed for shipment or protected in any way.
One unit from each production lot shall be dropped one time in each
of three mutually perpendicular planes and three times on arbitrary
corners. All other units shall be dropped once with the floor covered
with cloth to protect the finish of the units.
III Temperature Test
a. Non-operating Test
The Rquipment shall be subjected to temperatures of -54o C and
+7l C. For a period of 12 hours after equilibrium has been
attained.
b. Operating Test
The equipment shall be tested which operating at temperatures
of ? 5o C and ? 500 C. The equipment shall be brought to
equilibrium at the temperatures above before testing. (Tests
will be devised to cover the stability, audiogain and output
pow' . )
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 Declassified in Part - Sanitized Copy Approved for Release 2012/02/22 : CIA-RDP78-03172A000300030004-3
TV Humidity
One unit from each production lot shall be subjected to 10 cycles of
the following test. Equipment shall be on during test and shall
operate satisfactorily Iia ediately following end of test.
OC
V Altitude Test
Equipment shall be subjected to altitude of 30,000 feet for one hour.
Lquipment shall then be operated satisfactory at room temperature.
(The definition of "satisfactory operation" must be pinned down.)
5. Actions:
a. Put pressure onto complete Ad Hoc #6.
b. Follow up on the reports on all 4 research projects
which are due 4 June 1956. (Carl has been reminded of the
date.)
TSS]APDD
Distributions
P-77-1
AH-6 - 1
AH-43 - 1
P-163B - 1
P-163C - 1
P-163D - 1
Chrono - 1
la
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 Declassified in Part - Sanitized Copy Approved for Release 2012/02/22 : CIA-RDP78-03172A000300030004-3
? IV
R&D Requirement for Radio Switch Systems
RS-1 and RS-2
Radio Switch Systems RS-1 and RS-2 shall consist of Radio Switch
Receivers RSR-1 and RBR-2 and companion transmitters RST-i and
RST-2. The couplete systems shall provide a means for remote
control of various small electrical devices. Model RS-i shall
be a battery powered portable version requiring a continuous carrier
in the "on" position. Model R8-2 shall be line powered and shall
require carrier excitation only when being switched from "on" to
"off" or vice versa.
2. Spec if is
a. RS-1 System
(1) Frequency
The system shall operate in the 15 me band.
(2) Modulation
The system shall utilize a carrier amplitude modulated
at 3200 cps. The carrier shall be modulated more than
60% and less than 100%.
(3) Transmitter Output
The RST-1 shall deliver 50 mw average power to the antenna.
(4) Receiver Sensitivity
The RSR-1 shall operate reliably with a carrier input of
10 u volt and 60% 3200 cps modulation.
(5) Antennas
The RS-1 units shall use antennas approximately 1 meter long.
(6) Power Supply
The MR-1 shall operate continuously for 7 days at 700 F
from a battery supply. The RST-1 shall operate 4 hours
at 700 F from a battery supply. All battery supplies shall
be contained within the respective units.
(7) RSR -l Output
The RSR-1 shall be equipped with a SPST relay having contacts
capable of carrying 110 vac at 0.5 ampere non-inductive load
Declassified in Part - Sanitized Copy Approved for Release 2012/02/22 : CIA-RDP78-03172A000300030004-3
 Declassified in Part - Sanitized Copy Approved for Release 2012/02/22 : CIA-RDP78-03172A000300030004-3
current. A suitable two conductor cable and connectors
shall be provided far the relay output.
(9) /Ulication
T!M T43-1 system shall be applied to the control of units no'c
capable of furnishing a return signal such as a remotely
operated camere.
(3)
HS-2 "tam
(1) wry
Same as RS-1
(2) Modulation
Same as Rs-1
(b)
(5)
Transmitter Output
The HST-2 shall deliver 10 watts average power to the antenna.
Receiver Sensitivity
Sage as BB-1
Antennas
The RBT-2 shall use a half wave dipole. RSR-2 shall use a
wire antenna about 1 meter long.
(6) Poor s
The PS-2 system cooaaponents shall have power supplied which
operate from any voltage in the range 75 to 240 volts 50 cps.
The supplies shall be regulated and maintain sufficient
regulation so that the above range of voltage may be covered
by choosing between 6 nominal input voltages or less (regulation
over about * 10% of the nominal input voltage).
(7)
The MM-2 shall be equipped with a SPST relay having contacts
capable of carrying 110 vac at 0.5 ampere non-inductive load
current. The relay terminata shall be connected in series with
the line voltage and a standard 110 volt female receptacle.
(8) Package Size and Fob Factor
The RST-1 shall be as shall as possible and shall have a form
factor approximately 1:5:10. The Rffit-l shell be similar in
size and shape to the AST-1 but minimum size is not of major
importance.
RSR 2 Output
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 Declassified in Part - Sanitized Copy Approved for Release 2012/02/22 : CIA-RDP78-03172A000300030004-3
(8)
(9)
Package Size and Form Factor
The R SR-2 shell correspond in size and shape to the RSR-l.
The size and shape of the RST-2 shall be unrestricted.
Application
and J-1 3D.
The RS-2 system shall be applied chiefly to the control of
transmitters such as the ST-2, J-163c, 25X1
One model of each of the coaylete RO-1 and RS-2 systems shall be
constructed as evaluation prototypes and shall be competed as soon
as convenient. It is anticipated that a quantity of units will be
ordered following acceptance of the design.
Declassified in Part - Sanitized Copy Approved for Release 2012/02/22 : CIA-RDP78-03172A000300030004-3