I've thought about doing this in my Twins. Now that I've got a few extra transmitters, this might be a good time to experiment. On the T-4X, I believe half the can electrolytic is part of the sidetone r-c circuit.
Steve, W1ES/4 -----Original Message----- >From: Mark Nace <[email protected]> >Sent: Nov 1, 2011 10:14 PM >To: "Michael A. Kelly" <[email protected]>, [email protected] >Subject: Re: [Drakelist] Side Tone Adjustment for TR4CW Possible? > >Mike, >I think it's an audio phase-shift oscillator, so guess you would need to >change >some of the R-C values to get a lower freq. > >Others will give better thoughts I am sure. >73 >Mark >N5KAE > > > > >----- Original Message ---- >> From: Michael A. Kelly <[email protected]> >> To: [email protected] >> Sent: Tue, November 1, 2011 8:49:00 PM >> Subject: [Drakelist] Side Tone Adjustment for TR4CW Possible? >> >> Howdy, >> >> I had a 12AV6 tube (V2) go soft and after replacing it the "chirpy" >> audio for the side tone went away, (no chirp on the transmitted >> signal, just on my end) but the new side tone pitch is higher than I >> prefer. Is there an way to adjust the side tone audio to get it down >> in the 700-750 Hz range? (not volume, but pitch) >> >> Thanks, >> >> Michael N4MAK >> >> _______________________________________________ >> Drakelist mailing list >> [email protected] >> http://mailman.zerobeat.net/mailman/listinfo/drakelist >> > >_______________________________________________ >Drakelist mailing list >[email protected] >http://mailman.zerobeat.net/mailman/listinfo/drakelist _______________________________________________ Drakelist mailing list [email protected] http://mailman.zerobeat.net/mailman/listinfo/drakelist
