[AMRadio] R-388

Peter Wittenberg k2lrc at k2lrc.com
Mon Aug 7 22:16:06 EDT 2006

Rick, it sounds like the PTO is no longer tracking as it should. These are
very old radios and that is often a problem. There is an adjustment but you
will have to remove the PTO to do the adjustment. Often the adjustment
cannot adjust the total offset since these radios are so old.  If you can
calibrate the unit at all frequencies then just live with it. 

You could take the PTO out and send it to Howard Mills W3HM. He does these
every day. But keep in mind that it may work or may only get part of the
way. You could ship the entire radio to Howard as well. He does great
restorations of these radios.

Howard's email is: w3hm at frontiernet.net. Phone is 304-876-6483 
-73- Peter K2LRC

-----Original Message-----
From: amradio-bounces at mailman.qth.net
[mailto:amradio-bounces at mailman.qth.net] On Behalf Of Rick Brashear
Sent: Monday, August 07, 2006 10:03 PM
To: AMRadio at mailman.qth.net
Subject: [AMRadio] R-388

I apologize to those on more than one list for this repetition.

Before I dive into this R-388 head first I better find out if there is a 
problem or it's just an idiosyncrasy of the receiver.  On all band 
settings, .5kc thru 30mc,  the dial is very close to center turning the 
"Calibrate" only a little.  However, when I move to the right of center 
the calibration gets worse to he high side and the opposite happens when 
I go left of center.  It is more than just a tad.  If I go close to the 
edge of the dial (especially the high side) I am no longer able to move 
the "Calibrate" enough to line it up with the dial.  The receiver seems 
to be very sharp, hears great, everything functions properly and in 
general has no problems.  Since this is my first 388 I didn't know if 
this behavior is normal or if I have a problem I need to correct.  The 
dial and tuning mechanism seem to have very little if any slack and move 
very smoothly.  There is a little bump on each revolution I am guessing 
is normal.

I hope I have described this right.  Any ideas or advice?


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