[GreenKeys] AN/URA-53 vs AN/URA-17 FSK converter

[Nick England]

The original AN/URA-17 (CV-483 converter) had a 2550 Hz center freq. There
was a 1965 Field Change to make it 2000 Hz center freq. The manual
corrections for this field change say that the 2000Hz version is the
AN/URA-53.
Then there was a 1966 manual change that says that the 2000Hz version is
AN/URA-17B.

Huh - I'd never heard of a URA-53 before this. Never seen one badged that
way either,
Nick England K4NYW
www.navy-radio.com
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