[GreenKeys] Thyratron used in audio ! !

[hwhall at compuserve.com]

 >Who remembers or built a modem using television horizontal    oscillator coils for the filters?
 
Did that at our college ham radio station. Circuit was from an ARRL Handbook I think. NE-2 bulb indicators for mark & space. The amazing thing to us then was that it sometimes produced error free copy when our ears couldn't hear the received station.

Wayne
WB4OGM

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