[time-nuts] schematics for a HP117a please
max at maxsmusicplace.com
Sun May 2 21:48:51 UTC 2010
Well, I didn't get a manual with my receiver and I've never had it apart. I
was just assuming that it used standard newvistors. Assuming is always a
dangerous thing to do.
Max. K 4 O D S.
Email: max at maxsmusicplace.com
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----- Original Message -----
From: "J. Forster" <jfor at quik.com>
To: "Discussion of precise time and frequency measurement"
<time-nuts at febo.com>
Sent: Sunday, May 02, 2010 2:52 PM
Subject: Re: [time-nuts] schematics for a HP117a please
> 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.
>> Has the 13CW4s for the loop antenna and 6CW4/6DS4s for the receiver.
>> 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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