MONTHLY REPORT 1 September - 30 September 1956 SYSTEMS ENGINEERING BRANCH ENGINEERING DIVISION

• Document Type: CREST
• Collection: General CIA Records
• Document Number (FOIA) /ESDN (CREST): CIA-RDP78-02820A000100080017-4
• Release Decision: RIPPUB
• Original Classification: S
• Document Page Count: 9
• Document Creation Date: December 9, 2016
• Document Release Date: April 27, 2001
• Sequence Number: 17
• Publication Date: September 30, 1956
• Content Type: PERRPT

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MONTHLY REPORT
1 September - 30 September 1956
SYSTEMS ENGINEERING BRANCH
ENGINEERING DIVISION
This report constitutes the first prepared under the new organization
of the Systems Engineering Branch. The reorganization has progressed
smoothly and it appears that engineering personnel will be able to concen-
trate more on assigned projects since they are now further divorced from
maintenance activities.
In an effort to shorten monthly reports by reducing the number of
inactive projects reported on, those projects designated for Area support
will not be reported during the month that no significant activity has
occured.
1. PROJECTS AND ACTIVITIES
E-5002 MEDIUM POWER TRANSMITTER
During this report period) the GPT-750 transmitter was taken to the
25X1A5a1 for repair,
modifications and testing. The repair consisted of replacing faulty or
burned out components and the modifications consisted of suggestions by
25X1A5a1 this Agency and the group to effect a more dependable and safe
transmitter. After completing the repair, modifications and testing for
six days at the factory, the transmitter was returned to where it is
now undergoing a second series of evaluation tests. 25X1 A2d 1
E-500+ MODIFICATION OF TELEFUNKEN D. F
One each Telefunken D. F. equipment, type PST-1021 was broken down into
several components to which stock numbers were assigned. These components
are to be used as maintenance support items for this type D. F. equipment.
E-5009 PORTABLE RECORDING STUDIO
Work progresses satisfactorily on the Portable Recording Studio. The
Control Panels have been fabricated and the switches, jacks, etc., have
been mounted. The equipment racks have been assembled, drilled, tapped
and painted.
Delivery of the Trunks from a subcontractor has not as yet been made.
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E-5014 VHF MUX STUDY
A survey of military link equipment was completed during this report
period. A list of the various types of equipment and information con-
cerning each type is now being prepared.
E-5015. VFO STUDY
No information concerning transmitters type 16-F and RT-4 for VFO operation
25X1A5a1 was received from during this reporting period.
25X1A9a
E-5020 MODIFICATION WORK ORDERS
Modification Work Order #16 was published and distributed during the month.
This MWO improved the keying characteristics of the CP-4 by a slight circuit
change and replacement of the relays with smaller and quieter units.
E021 D. F. DEVELOPMENT AND REPLACEMENT PROGRAM
This project was discussed with of the Support Branch of
the Operations and Training Division, OC, who has agreed to call and chair-
man a meeting of members of interested Divisions and Staffs within Communi-
cations to formalize requirements, costs and specifications.
E-5030 GENERAL ANTENNA STUDY
No change in status.
E-5031 ENGINE-GENERATOR STANDARDIZATION PROGRAM
A list of engine-generator sets has been compiled to be used as a guide in
preparing a final list of generator sets that will be considered standard.
This list covers the power range from 200 KW to 125 watts, and consists of
some 14 sets.
Arrangements are being made to hold a conference with interested parties
to survey the list submitted and make recommendation as appropriate.
E-5032 ENGINE-GENERATOR SPARE PARTS PROGRAM
This project was reactivated on 27 September 1956. A complete check is
being made on the list of items now in stock for each of the engine-
generators we must support.
E-5033 PORTABLE PACK PHONE STUDY TO ESTABLISH COMMO STANDARD
No further progress can be reported on this project. Priorities and a
heavy workload necessitate expending man-hours on other projects.
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E-5037 TECHNICAL BULLETINS
There were no technical bulletins issued during this reporting period.
E-5038 MOBILE ALTERNATE RELAY AND COMMAND POST
A preliminary drawing and cost estimate was prepared and forwarded to the
Operations and Training Division, OC concerning a portable Alternate
25X1A6a Command Post which would replace the installation in the
event this equipment were disabled or destroyed. During the period covered
by this report, a memorandum was received from the Operations and Training
Division, OC requesting that this project be cancelled. Accordingly this
project will no longer be reported.
E-5040 TELEVISION IN'T`ERFERENCE STUDY (TVI)
25X1A6b We have been informed by the station engineer at that the complainant
bought a new television set about six months ago. The. complainant was to
install a new down lead from the antenna to the receiver, and alsoa low
pass filter in the input to the receiver. The complainant was then going
to call the station engineer in two weeks to notify him of the results.
Six months have passed without hearing from the complainant. The station
engineer also informed us that all recommendations made to eliminate the
interference were carried out. The project is now considered complete and
will not be-reported on further.
25X1A5a1
25X1A5a1
25X1A5a1
E-5041 RT-4 TRANSMITTER REPACKAGING
At the beginning of this month a visit was made to
to check on their progress with this project. Various ways to. eliminate
the troubles inherent in this transmitter were discussed then as well as
later in the month by telephone. On 24 September, sent
us an estimated cost breakdown which completed their initial phase of the
project. Further reports pretaining to this transmitter are expected from.
and when received, the two will be compared and
E-5042 SPECIFICATIONS FOR VHF MOBILE EQUIPMENT FOR WAREHOUSE STOCK
25X1A5a1 has supplied a Parts Data List that was to be furnished
under the terms of the contract. This list is being checked for accuracy
and compliance with specifications.
Inspection of the equipment is scheduled for the first week in October.
25X1A9a has been designated Inspector.
E-.5043 RADIO INTERFERENCE STUDY
The technical literature received from-the Department of Navy, Radio
Interference Reduction Center, is now being edited to obtain information
pertaining to our particular problems in radio interference. This infor-
mation will be made into a technical bulletin and sent to all areas in
order to facilitate the location anndd reduction of radio interference using
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E-5Olk CO-AXIAL TRANSMISSION LINE PATCH PANEL
A drawing of possible equipment configuration and a description of what
this system should be able to do was sent to to obtain25X1 A5a 1
a cost and time estimate. It was learned that the 25X1A5a1
Corporation has developed a 5 KW, air cooled 70 ohm. dummy load and shortly
will come out with a reflectometer to measure VSWR. The design specifi-
cations of this patch panel require these or similar units. An intensive
search has been made of Quick-Connector plugs and fittings for use in the
final system.
E-50i.5 TRANSMITTER TO ANTENNA MATCHING EQUIPMENT AND INFORMATION
An investigation of the various types of Standing Wave Ratio meters, brges,
and reflectometers was completed.
Numerous. copies of a Navy study concerning this problem were produced and
will be distributed with the final report of this problem.
Ten Agency designed "Trolley Meters" for use on open transmission lines
were received and will be sent to all areas after evaluation tests are
completed.
E-5060 STRATEGIC RESERVE PROGRAM (STOCKPILE)
The 13 position.station bill of materials still is held in abeyance until
firm requirements are stated.
A revision of the 15 position station bill of materials was inaugurated
during this reporting period.
A revision of the 20 position station bill of materials is nearing completion.
In a memorandum dated 13 September 1956 the Chief, Policy and Planning Staff
25X1A6a requested that the shipment of the be cancelled.
25X1A All items comprising the are to be returned to communi-
cations stock, allocation 22.
E-5080 MOBILE MESSAGE CENTER
A proposed preliminary layout of a Mobile Message Center which would be a
companion unit to the 2-ST has been prepared as requested by the Operations
and Training Division, OC. A,-,s .T a ss ~s1~. "C -
2-Basic planning and discussions indicate the Message Center will consist of
the following:
One Supervisory Position
Two Manual Positions
One RTTY Circuit or Duplex Land Line Operation
One OTP/ASAM-7 Position or Service Bench
One Tiny Tot Position.
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E-5090 TINY TOT PROGRAM
Tentative drawings have been made for wiring the Dual Channel Transmitter-
Distributor (XD-91) for basic on-line operation. Two receiver chassis
have been wired, which will operate in conjunction. with modified.XD-91
units. At this time the XD-91 Transmitter-Distributors are not avail-
able and experimenting with the circuitry cannot be done.
Tentative drawings for text, cipher and break controls have been made.
This control chassis will not be constructed until the operation of the
basic unit has been checked and proven reliable for on-line use.
E-5231 DESIGN OF AUDIO AND TELETYPE PATCH PANELS FOR 25X1A6a
During this reporting period, a trip was made to. the microwave site - 25X1A6a
to gather information on the type of equipment and facilities available to
provide a basis for the design of voice and teletype patch panels.
E-5251 DISASTER REGISTRATION POINT COMMUNICATIONS FACILITY
The maintenance of the equipment installed in support of this project is
now being carried out by the Installations and Maintenance Branch. This
project will not be reported on further by the Systems Engineering Branch
unless additional requirements are received.
25X1A E-5310 BASE STATION
25X1A Engineering support was provided at the _ Base Station, in conjunction
with the Real Estate and Construction Division, relative to the final
phases of the testing and operation of the air conditioning system.
25X1A6a E-531+ INK
25X1A5a1 A study was conducted by to determine whether a
VHF communications link between employ- 25X1A6a
ing the AN/TRC-l and ANTRA-1 equipment. is feasible.
The results of their findings indicate this equipment would only give a
fifty per cent reliability factor. AN/TRC-2L+ equipment was also investi-
gated. This is similar to AN/TRC-1 except it operates in the UHF range;
it would not prove as reliable. as the AN/TRC-1 sets. This path was over
170 miles and it was not expected that AN/TRC equipment would give a high
degree of reliability. Although the requirement for this circuit no longer
exists we intend to have this study extended to determine what range can
be expected with this type equipment at ninety to ninety-eight per cent
reliability.
25X1 A E-5340 ABASE STATION
Information was gathered and instructions forwarded regarding "Microwave
Tower Reguying" data was also furnished relative to the use of-the TRC
3500 matching transformer on high power pulse transmissions. Four servo
25X1A controlled VFO units were shipped - and action was initiated to
ship two modification kits for servo-tuning of the 231-D transmitter.
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E-5362 VENTILATION OF THE TRANSMITTER BUILDING 25X1A
The plan for ventilating the transmitter building submitted by ~ is 25X1A
currently being reviewed by the Real Estate and Construction Division, CL;
and when concurrence is obtained, the necessary fans, louvers, etc. will
25X1 C be shipped for installation by the under supervision by '5X1 A
personnel.
25X1A
25X1A
225X1 A6a
2a1A
E-5382 SE RADIO STATION
A dispatch was sent to suggesting the use of an electronic T/R
switch to eliminate the receiver blocking during periods
of transmission. was also queried relative to frequent breakdowns'
of. the SP-600 receiver noted in the monthly report.
25X1 A E-5+11
25X1A6a
25X1A6a
Assistance is being provided the Communicator to obtain a suit- 25X1A6a
able antenna installation. One 35' Premax whip has been requisitioned
and will be modified for co-axial input and cut to frequency prior to ship-
ment to this station.
A fifteen meter beam is being repackaged for pouch shipment 25X1 A6a
for operation on 21, 25 and 26 megacycles.
E-2+12 DESIGN OF ONE MAN RADIO STATION ~ 25X1A6a
The Bill of Materials and drawings for this project are being finalized.
It is intended that these drawings and Bill of Materials may be used as
25X1 A a guide for all stations in the M area.
25X1 A E-5441 BASE RADIO STATION
25X1A To assist - in solving the microwave equipment difficulties noted in
their Periodic Maintenance Summary, information was forwarded suggesting
some definite causes of troubles and possible solutions. was request1A
to re-evaluate the microwave situation to determine if new RF equipment was
required.
E-5445 AIR CONDITIONING SYSTEM -
The Real Estate and Construction Division, OL is currently preparing a
list of materials required, to complete the air conditioning installation
at this site. When this list is received by the Engineering Division,
procurement action will be initiated.
25X1A6b
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25X1A6b E-5446 POWER STUDY -'
No change in status. During the August report period a dispatch was for-
warded to Chief, WEMCA advising him that action had been taken to procure
three 100KW, 60 cycle General Motors Diesel Generator sets as replace-
ments for the present 50 cycle diesel generators installed at the-
transmitter site. In addition, this dispatch requested that we be pro-
vided with information regarding the capacity of existing power cables
and switch gear in order that we may design an appropriate switch cabinet
and procure additional cable and other intergral parts. As of this date,
no reply has been received,
25X1A6a
25X1A
25X1A6b
DRAFTING
The Drafting Unit has completed approximately forty-five pencil drawings
of sizes varying from 8-2" x 11" to 241, x 36".
Approximately forty positive-negative, and forty-five positive reproduc-
tions have been completed on the "trans-copier" reproducing unit during
this report period.
The work load in this unit was considerably heavier than the previous period.,
but was not up to our load capabilities.
MISCELLANEOUS
UTILIZATION OF MAPS AND GLOBES
An investigation of the various types, sizes, and uses of maps and globes
for determining distances and bearings in the orientation of antennas was
completed.
This report is now being edited before publication.
AMPEX 102 RECORDER REEL ADAPTOR
Schematic and assembly drawings for an adaptor were made. These drawings
have been sent to thLab to have a prototype made. Expected delivery
of the prototype reel adaptor is the week of 1 October.
REMOTE KEYBOARD FOR AFSAM-7
Existing problems of the AFSAM-7 have been discussed with of 25X1 A9a
Security and Dr. Gorton of TSS. The major problem of noise in the audio
range requires that the AFSAM-7 be completely isolated in a soundproof
container. With this type of isolation a remote keyboard is required.
The National Security Agency, will have a key-
board adaptor available about 1 January 1957. This adaptor should facili-
tate remoting the keyboard. A meeting with NSA will be held as soon as
possible to discuss the problem and obtain further information about the
keyboard adaptor.
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Tr.TMT
25X1A
25X1A9a
17 September-22 September
14 September
- 24 July-5. September
.. 24 July-5 September
Design Section - 24 September
Intelligence Course - 3 September-28 September
25X1A9a . Effective Writing Course
PCS
(Not Applicable)
EOD
(Not Applicable)
RESIGNATIONS
(Not Applicable)
TRANSFERS
(Not Applicable)
OTHER
TRAINING
Military Leave - 10 September-21 September
25X1A9a
Chief, Systems Eng1ieering Branch
ATTACHMENTS:
25X1A5a1 Memorandum for File, Subject: Micro-
Wave Exhibit Type VA-2 (25 Channel),
dated 17 September 1956
Memorandum to the File Subject: Visit to
25X1A5a1 dated 1 October 1956
Memorandum for the Record, Subject: Report of
TDY Trip to-------(July 24 - September 4, 1956),
dated 17 September 1956
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Memorandum for the Record Sub ect:
Report of TDY Trip to
17 September - 22 September),
dated 2 September 1956
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LOUR
25X1A5a1