[time-nuts] schematics for a HP117a please

J. Forster jfor at quik.com
Sun May 2 19:52:56 UTC 2010

Hi Max,

Are you sure the main unit uses 6CW4s? It's been 20+ years since I last
had my unit apart, but I thought the 60 KHz amp in the main chassis used
Nuvistors with either grid or plate caps, something I'd never seen before.
I also remember the Nuvistors were numbered something like 7xxx.

I don't have the manual to hand at the moment to check. Sorry.




> http://www.tubesandmore.com/
> Has the 13CW4s for the loop antenna and 6CW4/6DS4s for the receiver.
> Regards.
> Max.  K 4 O D S.
> Email: max at maxsmusicplace.com
> Transistor site http://www.funwithtransistors.net
> Vacuum tube site: http://www.funwithtubes.net
> Music site: http://www.maxsmusicplace.com

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