[GreenKeys] Periodic Plea - Frederick Baudot/Morse Converter manuals

[Nick England]

 This is a long shot, but perhaps someone has some old paperwork squirreled
away....

I acquired a batch of interesting vintage Frederick Electronics TTY signal
gear recently, but without manuals - any info or documentation at all would
be GREATLY appreciated.
http://www.navy-radio.com/rtty/frederick-2.htm
The basic functions of each of these is fairly evident, but some of the
connections are mysterious, and troubleshooting will be difficult!

660 Baudot to Morse Code Converter
CV/A-19 Baudot to Morse Converter
671 Morse to Baudot Converter

Nick England K4NYW
Chapel Hill NC
www.navy-radio.com
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