Inspection Report No. 3 - AN-67 Loop Antenna (Classified)

• Document Type: CREST
• Collection: General CIA Records
• Document Number (FOIA) /ESDN (CREST): CIA-RDP78-02820A001200050025-6
• Release Decision: RIPPUB
• Original Classification: S
• Document Page Count: 2
• Document Creation Date: November 17, 2016
• Document Release Date: July 28, 2000
• Sequence Number: 25
• Publication Date: September 9, 1966
• Content Type: MF

OPTIONAL FORM NO. 10 $010-101 .I
MAY 1902 [OITION
A Pbtied-For ReleaseJ000/08/16 : CIA-RD -02820AQQ1200050025-6
ITED STATES GOVERNMENT
Memorandum
:The Files: Contract No. 4001, Task Okder 5
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EP 66-200
DATE: 9 September 1966
Ono
FROM : Mr.
"CIBJECT:Inspection Report No. 3 - AN-67 Loop Antenna
1. Project Description:
This project is to develop a collapsible I3F loop antenna,
designated the AN-67. This includes the development of every-
thing but the capacitor. Specifically, the end, product must
show that the entire antenna, with the final capacitor, can be
- collapsed into 31 cubic inches and not more than four feet in
diameter when it is erected and in use. The antenna is tunable
over the frequency range of 4 - 25 MHz and has an input im-
pedance of approximately 50 ohms resistive over the.same fre.
quency range. The AN-67 will handle RF power up to 60 watts.
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2.
Contractual Information:
I
i
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as
n
tial Cost:
b.
Request for Procurement Action: 12 January 1966
c.
Initiation Date:
7 February 1966
d.
Completion Date:
7 August 1966 Extension: 7 October 1966.
e.
Deliverable Items:
Monthly letter progress reports, final
report, five instruction manuals, and
two engineering models.
Date of Meeting: 31 August 1966
Persons Attending:
Agency
25X1A9a Mr
Mr.
Mr.
Mr.
Mr.
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Contractor's Performance:
4. Place of Meeting:
i 1
Approved ygr1,~eJM?fs 990
Non-Agency
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 Approved For Release3000/08/16 : CI -02820AQp1200050025-6
EP 66-200
tJECT: Inspection Report No. 3 - AN-67 Loop Antenna with
Contractor's Performance:
a. On schedule and expected to remain so: Yes
b. Within obligated funds and expected to remain so: Yes
c. Satisfactory technical progress: Yes
7. Project Status:
The basic design work is complete. The tuning mechanism is
operating. The efficiency at the low end of the 4-25 MHz tuning
range is close to but does not quite meet the design goal. It
was found that the efficiency is being limited in this case by
the Q of the tuning capacitor. When and if we go into the develop-
ment of the miniature tuning capacitor perhaps a better Q can be
obtained. The efficiency at the high end will meet the design
goal.
25X1 A5a1 The first inflatible foil loops delivered by the subcon-
tractor, were found to be mechanically and
electrically unsatisfactory because of the contact rings. ~ 25X1A5a1
redesigned them and they now operate satisfactori . Also the
foil loops are not the correct physical size. NJ= will. 25X1A5a1
nave to t a ain. I will accompany Mr. on his next visit
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It
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a
o 12 September, to get a closer look at the problem.
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The program was extended two months to 7 October because of
slow delivery by and vacations of ^ project personnel.
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Distribution:
R&D Subject File
OL/PD/PCB/CAS
R&D Lab
OC-OS
ESB
Monthly (3)
EP Chrono .
zV1
OC-E/R&.D-EP
/M/jah
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Approved For Releas
(9 September 1966)
-02820A001200050025-6