[GreenKeys] Frederick Electronics code converter

[Jack]

This gadget was described in September 1965 QST on page 105. The

ARRL used one for their CW bulletin transmissions.

I think there was a manual on Ebay not too long ago.

 

Jack K2TTY

 

 

 

From: GreenKeys [mailto:greenkeys-bounces at mailman.qth.net] On Behalf Of Nick England
Sent: Friday, February 12, 2016 12:19 PM
To: Greenkeys <greenkeys at mailman.qth.net>
Subject: [GreenKeys] Frederick Electronics code converter

 

Thanks to Larry K7KSW I have recently acquired a Frederick 660A Baudot-to-Morse Code Converter. Now I desperately need a manual or to contact someone who also has a 660A. 

Mine is missing 2 PC boards, which I am can replicate if I can find a schematic or boards to copy. If you ever come across any 4.5"x14" boards full of 2N404 transistors and labeled N0133 or N0145, please grab 'em for me!

Photos of the unit and other PC boards is at
http://www.navy-radio.com/morse.htm#660a

I have all the code converter boards which provide a diode logic conversion from baudot to morse. It also looks like I have the boards for input and output relay control - I'm guessing the two missing boards provide some shift register logic, handle LTRS-FIGS shift, convert CR/LF to BT, etc.

 

And thanks to Jim N4BE I have added several more Frederick manuals at
http://www.navy-radio.com/manuals/tty/frederick.htm

Cheers,


Nick England K4NYW

www.navy-radio.com <http://www.navy-radio.com> 

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