[GreenKeys] Model 14, 15, 20 BSPs on-line

[Nick England]

Thanks to Tom Tillson, I have scanned and posted 716 pages of series 572
BSPs covering Model 14, Model 15, and Model 20 equipment. Lots of useful
info there.
https://www.navy-radio.com/manuals-ttycorp.htm#572

Have Fun!
Nick England K4NYW
www.navy-radio.com
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