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Original R-389/390 Final Engineering Report




 
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Tom WA3KLR
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« on: January 01, 2005, 02:31:55 PM »

Happy new year!  I was looking for some R-390A info for kicks and found a 106 page .pdf report called the Final Engineering Report by Collins' R&D Lab in 1953 for the Signal Corps.  It provides a rare and very educational opportunity to get the nitty-gritty of an HF receiver's engineering (53 years later).

The site I found is http://www.r-389.com
Collins R-389/URR VLF Receiver
by Don Reaves W5OR.  Perhaps the R-390 affectionatos already know of it.  The .pdf report was scanned in by Bill Hawkins and Al Tirevold WA0HQQ in March 1999.
The report is at http://www.r-389.com/engineeringreport.pdf
It is 1.8 megabytes.

Enjoy!
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73 de Tom WA3KLR  AMI # 77   Amplitude Modulation - a force Now and for the Future!
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