Hi Max, Take the top cover off. There is a shield box that may have useful info stenciled on top (2 - 4 screws) I have a HC manual, but cannot access it and won't be able to for some time.
Best, -John ================= > 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. > > Regards. > > Max. K 4 O D S. > > Email: [email protected] > > Transistor site http://www.funwithtransistors.net > Vacuum tube site: http://www.funwithtubes.net > Music site: http://www.maxsmusicplace.com > > To subscribe to the fun with transistors group send an email to. > [email protected] > > To subscribe to the fun with tubes group send an email to, > [email protected] > > ----- Original Message ----- > From: "J. Forster" <[email protected]> > To: "Discussion of precise time and frequency measurement" > <[email protected]> > 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. >> >> FWIW, >> >> -John >> >> ================== >> >> >> >>> 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: [email protected] >>> >>> Transistor site http://www.funwithtransistors.net >>> Vacuum tube site: http://www.funwithtubes.net >>> Music site: http://www.maxsmusicplace.com >> >> >> >> _______________________________________________ >> time-nuts mailing list -- [email protected] >> To unsubscribe, go to >> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >> and follow the instructions there. >> > > _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
