Here you have one of these crystals, it is a 62.500 Kc/s unit used in a
Marconi TV studio sync generator in the sixties.
http://s1338.beta.photobucket.com/user/EB4APL/media
/CAM00431R_zps07fdcbf4.jpg.html
Ignacio, EB4APL
El 07/03/2013 15:45, Lee Reynolds escribió:
....as young Nigel said, Marconi (for one) made use of these things. I
recall a Marconi HR-22 that had a number of these installed for spot
frequency channel reception.
Lee
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