TRANSMITTER ADAPTER, TA-1A & TA-3

• Document Type: CREST
• Collection: General CIA Records
• Document Number (FOIA) /ESDN (CREST): CIA-RDP78-03535A000600040005-5
• Release Decision: RIFPUB
• Original Classification: K
• Document Page Count: 3
• Document Creation Date: December 22, 2016
• Document Release Date: February 22, 2012
• Sequence Number: 5
• Publication Date: December 30, 1958
• Content Type: MISC

Declassified and Approved For Release 2012/02/22 : CIA-RDP78-03535A000600040005-5
Page 1
30 December 1958
PROJECT #2514
PROJECT TITLE: Transmitter Adapter, TA-1A & TA-3
3 !2 : v C06~3
S k 62
3
2~? r
3 3 7
cl 6
(3)
Declassified and Approved For Release 2012/02/22 : CIA-RDP78-03535A000600040005-5
 Declassified and Approved For Release 2012/02/22 : CIA-RDP78-03535A000600040005-5
rage
The TA-lA Transmitter Adapter is basically a TA-i unit that has been reworked
in an effort to improve the antenna-matching characteristics, the B7'0 circuitry,)
and the mechanical design of the miniature key. In addition, from the stand-
point of reliability and easeof reproduction, it was also necessary to seek
improvement in circuit layout and package arrangement. The prototype TA-lA
has been assembled and tests indicate that additional work will be necessary
to remove two deficiencies; namely, low power in the high band and high
crystal current in the off-resonance condition.
Declassified and Approved For Release 2012/02/22 : CIA-RDP78-03535A000600040005-5
 Declassified and Approved For Release 2012/02/22 : CIA-RDP78-03535A000600040005-5
Page 3
Removal of the deficiencies in the TA-1A as noted above and construction
of six units.
Design and construction of a prototype transmitter adapter similar in size
and characteristics to the TA-lA with the added capability to operate over
the 3-22 inc frequency range.
Declassified and Approved For Release 2012/02/22 : CIA-RDP78-03535A000600040005-5