Jack Griffin <[EMAIL PROTECTED]> made an utterance to the drakelist gang
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> Karl and the others with TR-4 Drive problems,
> Just installed an old 9.000 mhz rock (measured
> 9.00004) in the TR-4 that I have not been able to
fix.
> It seems to have done the trick. I can get the
'noise'
> pitch equalized per the manual and finally got Drive
> and decent Output from the rig. The new JAN 9.000000
> rock that actually measured about 9.004 did not work
> at all. I did nothing else but change the rock. Will
> have to get on the horn with JAN and also check the
> two other rocks (42.5 and 43.6) I got from them to
see
> if they are any good.
> The original 9.00000 rock in this rig was running
too
> low in freq., but the new JAN one was much too high.
> Hope this helps the others with this problem.
> I will probably put the original rock back in just
to
> make sure.
> See the Handbook for the MPF-102 Crystal osc. if you
> need something to check crystal freq; but the 'pitch
> test' in the TR-4 manual seems to be a good
indicator.
> IRC may be a better source for these items; not
sure.
> 73, jack WA1BRI/4
>
> --- Karl Corder <[EMAIL PROTECTED]> wrote:
>
>> Jack, yes you can order them from International
>> Radio Corporation.
>> They cost $110 each. There E-Mail address is
>> [EMAIL PROTECTED] .
>> I called them up and he didn't want to sell me
>> something that
>> might not fix the problem unless i was sure of what
>> was causing the
>> problem, so that is why I am holding off. I really
>> appreciate your
>> reply and any info you find out. -Karl
>>
>> ps I did order their catalog, which they will send
>> you for free.
>>
>>
>> ----- Original Message -----
>> From: "Jack Griffin" <[EMAIL PROTECTED]>
>> To: "Karl Corder" <[EMAIL PROTECTED]>
>> Sent: Monday, December 05, 2005 8:59 PM
>> Subject: Re: [drakelist] Questions regarding a
Drake
>> TR-4 problem
>>
>>
>> > Karl,
>> > We are not the only ones with this problem have
>> seen
>> > it on here before. Just received another used
>> 9.000
>> > rock from a TR-3. put this in my rock tester and
>> it is
>> > showing 9.000004; lot better than the JAN unit.
>> Will
>> > throw it in tonite or tomorrow and let you know
>> what
>> > happens.
>> > Hope it is not a filter problem; don't think you
>> can
>> > get these except from a butchered rig and I do
not
>> do
>> > that.
>> > 73, jack
>> >
>> > --- Karl Corder <[EMAIL PROTECTED]> wrote:
>> >
>> >> Jack, thank you very much for the information. I
>> >> don't fully understand
>> >> the operation of the TR-4 but I keep going over
>> the
>> >> schematic looking
>> >> for a clue that would cause this condition to
>> ocure.
>> >> If you
>> >> discover something please let me know. thanks
>> again
>> >> -Karl
>> >>
>> >>
>> >> ----- Original Message -----
>> >> From: "Jack Griffin" <[EMAIL PROTECTED]>
>> >> To: "Karl Corder" <[EMAIL PROTECTED]>
>> >> Sent: Monday, December 05, 2005 5:14 PM
>> >> Subject: Re: [drakelist] Questions regarding a
>> Drake
>> >> TR-4 problem
>> >>
>> >>
>> >> > Karl,
>> >> > I am having the same problem with my TR-4.
Been
>> >> > working around the Bal. Mod. and the 9.000 mhz
>> osc
>> >> as
>> >> > well. My old 9.000 rock was running too low in
>> >> > frequency even with adjusting C-130. I could
>> not
>> >> get
>> >> > any drive nor could I get the same pitch on a
>> >> noise
>> >> > signal per the Drake alignment instructions.
>> After
>> >> > checking the tubes, including substituting a
>> known
>> >> > good one from a working TR-4 and checking the
>> BM
>> >> > diodes; I ordered a new JAN rock. Took about
>> three
>> >> > weeks to get it; put it in and now the 9.000
>> osc
>> >> is
>> >> > running too high in frequency. Once again
C-130
>> >> cannot
>> >> > bring it down where it belongs either in RX or
>> in
>> >> Tune
>> >> > (X-CW), where the osc. is suppossed to shift
>> from
>> >> > about 9.000 to 9.001 (I think; haven't got the
>> >> manual
>> >> > in front of me.) so a signal can get through
>> the
>> >> > crystal filters.
>> >> > Sent an email to JAN to see if they might have
>> >> done
>> >> > the rock wrong. I did test it on my MPF-102
>> >> crystal
>> >> > osc. and it measured 9.00458 on my freq.
>> counter.
>> >> > From where I sit, your lack of test gear does
>> not
>> >> > matter; I have about all I need and still
>> cannot
>> >> get
>> >> > this thing working.
>> >> > BTW, Drake used at least two values for C-130
>> in
>> >> the
>> >> > TR-4 series. I have rigs with a 5-25 and
8-30pf
>> in
>> >> > them.
>> >> > Will keep the group informed as I deal with
>> this
>> >> one.
>> >> > they ahve been helping me on this problem for
>> the
>> >> past
>> >> > 3-4 months.
>> >> > 73, Jack, WA1BRI/4
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