[time-nuts] schematics for a HP117a please

Dan Rae danrae at verizon.net
Sat May 1 01:40:29 UTC 2010

paul swed wrote:
> Just picked up 2 units at a flea market today.
> Would like to fire them up without smoke. :-)
> Would appreciate schematics if the are out there.
> My search so far is 0
> Thanks

Paul, to get these to work, you will need the loop antenna.  This has, 
in the early versions at least, a Nuvistor amplifier in it with a 
crystal filter built in to it.  I think there was a later version that 
had transistors.  I have seen the schematic somewhere, have you tried 
TvB's site?



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