PACKAGING PHILOSOPHY

• Document Type: CREST
• Collection: General CIA Records
• Document Number (FOIA) /ESDN (CREST): CIA-RDP81B00878R001400010027-2
• Release Decision: RIFPUB
• Original Classification: S
• Document Page Count: 2
• Document Creation Date: December 22, 2016
• Document Release Date: August 19, 1999
• Sequence Number: 27
• Content Type: REGULATION

Approved For Release 2009/04/10: CIA-RDP81 B00878R001400010027-2
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4. Packaging Philosophy
a. It is proposed that the receiving equipment be packaged
in accordance with the modular concepts originally enunciated
in MIL-E-19600 (AER), as recently modified in WADC exhibits
WCLN58- 18 and WCLN58- 12. The proposed design approach
will employ plug-in modular units with standardized dimensions.
These units will be mounted on a chassis which will provide
the necessary electrical interconnections, air-cooling
distribution, interference filtering, and mounting mechanism
to the air-frame rack. Each module will be of such design
as not to require critical electrical or mechanical interconnection
to the main chassis or to the modules. Such a feature provides
for easy redesign of the over-all grouping .of modules into
units with other form factors where installation requirements
change.
b. It is proposed that all modules, with the exception of the
irk r-f amplifier module, be housed within a common enclosure
containing the main chassis. As in the present Band i
application, it is believed that the r-f amplifier is better
located externally as it figures prominently in the isolation
required in the switching operation. Although it is somewhat
premature to specify the exact numberr of modules required,
the minimum breakdown will be. i) the broadband r-f
preamplifier, 2) each sub-band converter unit, 3) each fine-
tuning receiving/detection unit, 4) power supply (one for each
primary supply voltage).
c. It may be desirable to resolve the fine-tuning receiving/
detection unit into three separate modules: one module for the
r-f and i-f circuitry, another module for the coherent detection
circuitry, and the third module for the sweep and lock-on
logic. In any event, corresponding modules in the fine-tuning
receiving/detection units would be identical.
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This document contains information effecting the national defense of the United States within the meaning of the Espionage Laws, Title
' Approved For Release 2009/04/10: CIA-RDP81 B00878R001400010027-2 by low.
 Approved For Release 2009/04/10: CIA-RDP81 B00878RO01400010027-2
SECRET
d. All sub-band converter units would be completely
interchangeable, electrically and mechanically, so that a
receiver configuration to handle any type of frequency
coverage could be readily established by simply removing
one module and inserting another.
SECRET
4-2
This document contains information affecting the national defense of the United States within the meaning of the Espionage Laws, Title
' Approved For Release 2009/04/10: CIA-RDP81 B00878RO01400010027-2 by low.