[time-nuts] Tube/valve mounted xtals....

EB4APL eb4apl at cembreros.jazztel.es
Thu Mar 7 16:39:16 EST 2013

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.

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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