Bob, I would first turn everything off, unhook the TR-3 from the power supply, and look at the frame T/R relay and make sure the contacts are clean. Once they are clean, I always do some continuity measurements on the XMIT and RCV cathode lines to make sure they really are making good contact. If this is a no-go, make sure the relay tube is actually energizing the relay coil. Beyond that, if the 9 MHz BFO is not being shifted into the SSB filter passband (upper sideband filter I think), then there will be no drive at all. Are you able to receive upper and lower sideband QSO's okay?
Others will probably have more and better advice... 73 Mark N5KAE ----- Original Message ---- > From: AD5VJ Bob <[email protected]> > To: [email protected] > Sent: Sun, January 10, 2010 6:23:34 PM > Subject: [Drakelist] TR-3 > > I have a TR-3 and it is working fb on rx, except when going to the procedures > for tuning while using a dummy load as the antenna, on > page 17 of the manual after presetting the controls as indicated, when I get > down to the: > > 'advance the XMTR gain control clockwise until the plate amperes meter moves > up > scale slightly from idling current' > > It does not move up scale and I have no output when the function switch is > set > to X-CW per two different watt meters I have put > inline with the dummy load. > > All the tubes light up and seem to be functioning properly. > > Any ideas? > > Bob AD5VJ > > > _______________________________________________ > Drakelist mailing list > [email protected] > http://mailman.zerobeat.net/mailman/listinfo/drakelist _______________________________________________ Drakelist mailing list [email protected] http://mailman.zerobeat.net/mailman/listinfo/drakelist
