Well Guys the Problem was easier than I thought it would be. It seems that
when the last person to put the PTO in the R 388 Got everything right EXCEPT
lining up the endstop portion of the dial train with the Pto!!! I used a
frequency counter as was suggested by one of the guys and discovered that
the PTO output was correct just a bit off (2.75mhz to 3.75 mhz) . I just
loosened the dial knob on the front side of the PTO turned it 1 turn clock
wise and I now have the proper positioning of the of the frequency display
on the slide rule readout. All that is left to do is center up the round khz
dial and then do an alignment. I want to take this opportunity to thank
all the guys especially John and Don and all the others for the valuable
advice. Without it I think the radio would still be in the corner gathering
dust while I tried to figure out what the next step would be. Thanks very
much guys for the help.
Joe K4TR
----- Original Message -----
From: "D. Chester" <[EMAIL PROTECTED]>
To: <[email protected]>
Sent: Tuesday, July 17, 2007 1:16 AM
Subject: [AMRadio] Re: R 388
Thanks Don. I was hoping that this was no the case. I have taken a few of
these things out and adjusted them. I t is a real pain in the butt to do
and
was hoping that someone would come up with something else that might
cause
the problem that I described. I just do not feel like doing it to this
unit
as it belongs to friend and it is a very late model. The wiring under the
chasis is pristine and the is also very clean there. I am a bir
apprehensive about doing anything to the radio that involves major
surgery!!!!! I guess I will have to try though. Thanks for the advise.
This
is exactly the kind of info that I was looking for. Someone else that had
the same thoughts on the mattter as I did!!! Thanks
Joe K4TR
If it is like the R-390 series or 75A-4, you don't have to do major
surgery. I have done both receivers without removing the PTO from the
receiver. As I recall, I fabricated a tool to reach the slug adjustment
and was able to do it with the PTO intact inside the receiver. You may
have to remove a sub-panel cover. If you have a manual it should cover
the procedure.
73,
Don
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