That is a good article. It nicely summarizes the subject in one place. Why it
had to be published in a classified journal originally is mystifying as it
contains only stuff that any specialist in RF communications should already
know.
When I was active in the industry, I had occasion to interview several recent
BSEE graduates looking for work at a NASA facility. I was shocked to learn
that even in the early 1980's the universities had pretty well ignored teaching
the material included in this article. at the BS level. The curricula had gone
digital even 3 decades ago. So this article could serve as a good introduction
to EE graduates on the art of receiver design. The ham radio literature of
that era also included some excellent articles - Google "Ulrich Rhode".
Joe Buch
From: bernieS <[email protected]>
>To: SWLfest <[email protected]>
>Sent: Sunday, January 22, 2012 7:24 PM
>Subject: [Swlfest] NSA releases HF receiver specs under FOIA request
>
>On January 11, 2012 the National Security Agency (NSA) released under a FOIA
>request a pre-1995 article entitled "Receiver Dynamics" from its Classified
>internal magazine, Cryptologic Quarterly. It contains a well-written
>explanation of the specifications of HF receivers used by some of NSA's K4
>divisions. Some SWLfest list members may even recognize some of the receivers
>mentioned as their own.
>http://www.nsa.gov/public_info/_files/cryptologic_quarterly/Receiver_Dynamics.pdf
>
>-Ed Cummings
>
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