Tag Archives: WJ-8711

Nick compares the Icom R9000, Harris 590, WJ 8711, and Racal 6790

Many thanks to SWLing Post contributor, Nick Booras, who shares the following video and notes:

As a SW listener and radio collector I have enjoyed many hours perusing your blog and reviews. I recently started posting YouTube videos of some of my collection and thought you and your viewers might find them interesting. Please take a look at my youtube channel – dieselten01

My most recent vid included some pretty cool older surveillance type receivers.

Those are fabulous receivers! Thank you for sharing your video, Nick! Click here to check out Nick’s YouTube channel.

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NSA declassifies “Receiver Dynamics” primer

The Watkins-Johnson HF-1000 (and NSA version, WJ-8711) are mentioned in this article

On January 11, 2012 the National Security Agency (NSA) released a pre-1995 article entitled “Receiver Dynamics” from its classified internal magazine, Cryptologic Quarterly. It contains an excellent, well-written explanation of the specifications of shortwave receivers used by some of NSA’s K4 divisions.

Download the article here (PDF).

Thanks to Ed in the SWLfest list for the tip!

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