Inspection Report No. 1 - VHF Voice Spread Spectrum Transceiver

• Document Type: CREST
• Collection: General CIA Records
• Document Number (FOIA) /ESDN (CREST): CIA-RDP78-02820A001200040020-2
• Release Decision: RIPPUB
• Original Classification: S
• Document Page Count: 2
• Document Creation Date: November 11, 2016
• Document Release Date: September 25, 1998
• Sequence Number: 20
• Publication Date: July 8, 1966
• Content Type: MEMO

OpTAopooved For Release 1999/0 78-0282OA001200040020-2
MAY 7962 EDITION
OSA OEN, RCO. NO. 27 NINO,
FROM
25X1A9a
01111110
SUBJECT:
M
emorandum
The Files: Contract No. 7253
Mr.
1. Project Description:
25X1A5a1
Mr.
Mr.
Inspection Report No. 1 - VBF Voice Spread Spectrum Transceiver
25X1A5a1
has developed a breadboard model of
a spread spectrum VHF communications system that may satisfy our require-
ment for a short range, body concealable system featuring minimum risk of
interception by hostile receivers.
Before further development is sponsored, we desire to test the = 25X1A5a1
system under simulated field conditions. The present breadboard will be
repackaged, put on a frequency in the 300 Mc/s band, and field tested in
2
C
t
b. Request for Procurement Action: 1 December 1965
c. Initiation Dater 1 March 1966
d. Completion Date: 31 July 1966
e. Deliverable Items: Interim technical report (4 copies)
Final technical report (4 copies)
on
ractual information.
a. Initial Cost: $17,525
3. Date of Meeting: 15 June 1966
4. Place of Meeting:
5. Persons Attending:
25X1A9a Mr.
Mr.
EP 66-157
DATE: 8 July 1966
25X1A6a
Non-Agency
25X1A5a1
6. Contractor's Performance:
GRUUP 1
Ex om aalamatlc
down and
k&W declassitic
Approved for Relea a 1B 999/0107 rlyC~l tRD 8162820A0011 00040020-2
 1t 6
Approved For Release f4999/ - DP78-02820AJ1200040020-2
.M 25X1A5a1 EP 66-157
SUBJECT: Inspection Report No. 1 - VHF Voice read
with ver
*Now
..mw 6. Contractor's Performance:
a. On schedule and expected to remain so: Yes
b. Within obligated funds and expected to remain so: Yes
.mm c. Satisfactory technical progress: Yes
7. Project Status:
25X1A5a1
M
essrs. were ready to demonstrate the transceivers.
After discussing the system concept, we went out into the field to try
the units. One transmitter blew a transistor ending the demonstration
almost immediately. We were not able to make any determination on the
range of the transceivers. Also, they demonstrated the signal character-
istics on an oscilloscope, a spectrum analyzer, and a receiver to demon-
strate"interception immunity. The voice quality seemed adequate. We
will need to have the above three test equipments available to the con-
tractor when the demonstration is given here.
The antenna, especially if it is to be body-worn, is going to be
troublesome. The antenna must be broadband which limits its efficiency,
plus VHF frequencies are absorbed bthb
th
y
e ody readily reducing effective
25X1A5a1 radiated power. would like any help we can give them in this area.
25X1A5a1 -will be t
ad
e
y o demonstrate the transceivers soon, so we must
be
in
g
preparations here. Mr. - indicated that they should be 25X1A5a1
ready in a month.
25X1A9a
Distribution:
R&D Subject File
OL/PD/PCB/CAS
R&D Lab
OC-OS
E SB
Monthly (3)
EP Chrono
25X1A9a OC-E/R&D-EP/bjp
Approved For Release 1999109/07 :
m nl automatla
A ng and
detlass!ffr
(8 July 1966)
2820A001200040020'-2