Best to check and make sure you have the bias voltage present. The finals
will self-destruct if the negative voltage is missing.
Joe W4AAB
> Also wanted to mention
>
> I noticed that while the plate amperes meter does not change when I
> increase the XMTR gain while trying to tune, the S units meter
> does rise considerably, the 'PLATE AMPERES' meter actually decreases a tad
> not much only about half a division.
>
> Also while I am listening to the morning show at 3843 I am in 'SIDEBAND'
> 'SSB' with the 'RF TUNE' control peaked and now the S meter
> is reacting much better than it did before I cleaned the relay - but I am
> also noticing the 'PLATE AMPERES' meter moves slightly at
> the 'S UNITS' meter reaches S 20 and above.
>
>> -----Original Message-----
>> From: [email protected]
>> [mailto:[email protected]] On Behalf Of AD5VJ Bob
>> Sent: Monday, January 11, 2010 9:16 AM
>> To: 'Mark Nace'; [email protected]; 'Drakelist'
>> Subject: Re: [Drakelist] TR-3
>>
>> 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
>> > >
>> >
>> >
>> > _______________________________________________
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>> >
>>
>>
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