There certainly is a driver transformer in a stock apache,the audio driver is a 12BY7A not a 5763,the 5763 is in the osc,buffer circuit. dale/ka5who ----- Original Message ----- From: <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]>; "Discussion of AM Radio" <[email protected]>; "Discussion of AM Radio" <[email protected]> Sent: Sunday, March 26, 2006 12:59 PM Subject: Re: [AMRadio] Modulator design needed
> Mark, > > Take a look at a Heathkit Apache schematic, (TX-1), for ideas. > > There is NO driver transformer. The 5763 driver goes to the Mod transformer and the EL-34s feed it for audio. > > Bob - N0DGN > > -------------- Original message ---------------------- > From: "W1EOF" <[EMAIL PROTECTED]> > > > > I've been gifted a nice mod transformer so I can build a modulator for my > > Johnson 6N2. I don't have a driver transformer so I'm looking for a design > > which doesn't need one. I'm sure the schematics are out there, but I keep > > finding ones with the driver transformer. Same with all my old radio books > > that I've looked at so far. Can someone point me in the direction of a good > > design that is online, or one that you can share with me via email? Thanks! > > > ______________________________________________________________ > AMRadio mailing list > Home: http://mailman.qth.net/mailman/listinfo/amradio > Help: http://mailman.qth.net/mmfaq.html > Post: mailto:[email protected] > AMfone Website: http://www.amfone.net > AM List Admin: Brian Sherrod/w5ami, Paul Courson/wa3vjb >
