Thank you, Nick, for scanning and archiving the Navships 91355 manual.  A CV-57 is in my rack for use with the R-388/51J receiver which has a 500 kc IF output.  (A re-tuning of the input unit in this converter allows 500 kc input.)  Your scan will help me a lot since I've only been looking for a copy of the manual for some 30+ years!
Thanks and 73, George W6BN

On Monday, January 15, 2024 at 10:30:37 AM PST, Nick England <[email protected]> wrote:


These FSK converters connect to the IF of a receiver

URA-6 has two CV-57 converters (for 455kc IF) and a CM-14 diversity comparator
URA-7 has two CV-71 converters (for 50kc IF) and a CM-14 diversity comparator

They are big, heavy, connect to teletypes, and painted gray - what's not to love?
(photo thanks to W5JV)

Nick England K4NYW
www.navy-radio.com
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