Good morning everyone: I stayed up last night and did the resistance checks.
Found one tube (V17 - 6AQ5) which when checking it you could warble the tube and the measurements would change drastically. So I had another and changed it and now it is much more stable. Thought I had found the problem and tried again to no avail. So I took it apart again and cleaned the relay contacts. It seems to be rx'ing better, but still wont transmit anything. I am planning on doing voltage measurements today sometime, unless anyone has another idea. It is such a laborious task I am open to another suggestion Hi Hi Bob AD5VJ > -----Original Message----- > From: [email protected] > [mailto:[email protected]] On Behalf Of AD5VJ Bob > Sent: Sunday, January 10, 2010 9:46 PM > To: 'Mark Nace'; [email protected]; 'Drakelist' > Subject: Re: [Drakelist] TR-3 > > Yeah there is not even the bulb holder in there. It looks > like it has been hard wired to the relay. > > There is a small coax coming up from the underside. According > to Garey's picture of the relay, the center conductor is > soldered directly to 'RX ANT' the shield is soldered directly > to ground. > > Bob AD5VJ > > > -----Original Message----- > > From: Mark Nace [mailto:[email protected]] > > Sent: Sunday, January 10, 2010 9:37 PM > > To: AD5VJ Bob; [email protected]; Drakelist > > Subject: Re: [Drakelist] TR-3 > > > > I think a lotta people just removed and by-passed the > signal overload > > bulb because of poor contact. I have one on the slab right > now, and > > it has no bulb. > > > > Also, about 99% of everything I know about Drake Transceivers I got > > from Garey and others on this reflector over the years !!! > They are > > great teachers. > > > > mark > > > > > > > > ----- Original Message ---- > > > From: AD5VJ Bob <[email protected]> > > > To: [email protected]; Drakelist <[email protected]> > > > Sent: Sun, January 10, 2010 9:17:41 PM > > > Subject: Re: [Drakelist] TR-3 > > > > > > Hi Garey > > > > > > The bulb you are showing is not there. Could that be a problem? > > > > > > Bob AD5VJ > > > > > > > -----Original Message----- > > > > From: Garey Barrell [mailto:[email protected]] > > > > Sent: Sunday, January 10, 2010 9:14 PM > > > > To: AD5VJ Bob; Drakelist > > > > Subject: Re: [Drakelist] TR-3 > > > > > > > > Bob - > > > > > > > > Attached is the page from my CD with the relay contacts > > identified. > > > > Should help you find what you need to check. > > > > > > > > 73, Garey - K4OAH > > > > Glen Allen, VA > > > > > > > > Drake 2-B, 4-B, C-Line& TR-4/C Service Supplement CDs > > > > > > > > > > > > AD5VJ Bob wrote: > > > > > Hi Mark > > > > > > > > > > Yes I can rx both usb and LSB with no problem. > > > > > > > > > > The rig is supposed to switch to the sideband > > appropriate for the > > > > >band which it does on all bands except for 40 meters. On 40 > > > > it goes into usb not LSB for some reason and I have to > > switch it to > > > > X in order to get the LSB signals off of 40 meters. > > > > > > > > > > Does the relay only have the upper contacts. I can see > > them moving > > > > > from the top after taking the top off, or do I have to take > > > > the relay out in order to clean any at the bottom of the relay. > > > > > > > > > > Bob AD5VJ > > > > > > > > > > > > > > >> -----Original Message----- > > > > >> From: Mark Nace [mailto:[email protected]] > > > > >> Sent: Sunday, January 10, 2010 6:44 PM > > > > >> To: AD5VJ Bob; [email protected] > > > > >> Subject: Re: [Drakelist] TR-3 > > > > >> > > > > >> 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 > > > > >>> 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 > _______________________________________________ Drakelist mailing list [email protected] http://mailman.zerobeat.net/mailman/listinfo/drakelist
