TRIP REPORT -(SANITIZED)

• Document Type: CREST
• Collection: General CIA Records
• Document Number (FOIA) /ESDN (CREST): CIA-RDP78-03424A002000080033-7
• Release Decision: RIPPUB
• Original Classification: S
• Document Page Count: 2
• Document Creation Date: December 22, 2016
• Document Release Date: September 20, 2011
• Sequence Number: 33
• Publication Date: October 24, 1958
• Content Type: MEMO

Sanitized Copy Approved for Release 2011/09/20: CIA-RDP78-03424AO02000080033-7
ST/,NDARD FORM NO. 64 /
Office Memoran
FROM
suBJECT:.Trip Report -
iFIDLNT
UNITED STATES GOVERNMENT
DATE: 24 October 1958
1. On 15 October 1958 a trip was made to the
to monitor (bntract RD-605, Task
Orders 1, 2, 3 and 1+,currently in progress. Persons participating
in the discussions were:
2. The progress of the antenna programs at ~ appears
to be very satisfactory. If the programs turn out as anticipated,
a series of broadband antennas will be developed which will greatly
surpass present equipment in scope and application possibilities.
3. Since Task Orders 1 and 4 require similar antenna feeds
for both the inflatable and sectionalized metal parabolic antennas,
the contractor is holding off on mechanical design work until a
firm design is worked out for these feeds. The work to date on
Tasks 1 and 4 has been largely donfined to measurements and design
work on feed configurations. The contractor at the present time
has compiled a substantial file of test data and pattern measure-
ments,and has developed several experimental feed designs. When
the final feed design has been agreed upon, mechanical design
work involving studies on stress analysis, supporting structure
design, and bag design for the inflatable antennas will begin.
The contractor has been asked to use a straightforward means of
putting the sectionalized dishes together, without employing
mechanical adjustments.
4 Task Order 2 covers the design and development of a
high-gain unidirectional broadband logarithmically-periodic antenna
for use with the CS-8 Search Receiver. The proposed frequency
range to be covered by this antenna was 30 to 600 megacycles.
This antenna is now mechanically complete and has been set up
for inspection. The antenna appears to meet all requirements
outlined in the specification in regards to its mechanical design.
COI FI DLNTIAL
Sanitized Copy Approved for Release 2011/09/20: CIA-RDP78-03424AO02000080033-7
 Sanitized Copy Approved for Release 2011/09/20: CIA-RDP78-03424AO02000080033-7
MOMPRPM
CONFIDENTIAL
From the standpoint of measurements, the antenna has been only
partially tested. At the present time,the frequency range of the
antenna is 60 to 600 megacycles. Further studies will be made to
lower the frequency limit of the antenna, as far as practical,
and still maintain a usable VSWR for receiving applications over
the 30 to 600 megacycle range. The main factor limiting the
frequency ran4f the antenna is its size requirement, which specifies
that the antenna shall be operated in an area 7 x 9 feet. The
ultimate outcome of this task looks extremely promising for search
application and the antenna is scheduled for delivery in about
4 weeks.
5. Task Order 3 covers the development of broadband antennas,
filters, and detectors for the 50 megacycle to "crystal
frequency range. To date, it appears that the a crystal
holders and 0 crystal provides the best performance; further
investigations are being made along this line. The above mentioned
combination will provide a sensitivity of -53 db up to 10 kmc.
In the 10 to 40 kmc range, the crystal holder may become a part of
the antenna design. Attempts are being made to incorporate the
filters for frequency determination directly into the antenna design.
If this is not successful, high or low -pass filters will be used.
cu y is being encountered periodic antenna printed-
circuitry dielectric affecting the pattern characteristics. This
difficulty is expected to be overcome by cutting out dielectric
in various areas of the antenna.
6. The study program at this time looks very encouraging in
view of present information. It is expected that all antennas will
be of satisfactory size for clandestine use and that very few antennas,
probably 6 or 7, will be needed to cover the enitre 50 me to 40 kmc
range .
CONFIDENTIAL
Sanitized Copy Approved for Release 2011/09/20: CIA-RDP78-03424AO02000080033-7