[R-390] R390-A questions

[Barry]

If you are able to move the two halves of the split gear with everything
assembled, then something has definitely moved where it shouldn't have.  The
split gears are supposed to be loaded with spring tension and then both
halves are supposed to mesh with a gear that is thick enough for both halves
to engage with it.  Sounds like you may have a loose gear clamp and the gear
has slipped axially on its shaft far enough such that both halves of the
split gear are not engaged properly.

Or I could be missing the description altogether...

Barry - N4BUQ

----- Original Message -----
From: "Bob Young" <youngbob53 at msn.com>
To: <r-390 at mailman.qth.net>
Sent: Wednesday, July 26, 2006 7:56 PM
Subject: [R-390] R390-A questions


> I just acquired an 390-A, which was done over by an expert, On the third
> time going through the bands I felt something happen to the feel of the
the
> megacycle change knob, like something came loose. To make a long story
short
> (after a few days) I found that one of the little springs that hold the
two
> large gears together immediately inside the radio had come loose and had
> fallen out. I found it and reinstalled it but now the first two bands do
not
> work correctly unless the megacycle change knob is tuned lower than the
> click stop (or whatever you call it). The feel of the knob is definitely
not
> right especially when I go from 1 to 2 megacycles, there are two distinct
> clicks. A few of the other bands also sometimes need to be fooled with
> (megacycle change knob rocked back and forth etc.) to come in right. It
> seems to me that the space where the springs are in between the two gears
> comes too close together at a certain point and this is when the spring
> falls out. Does this indicate worn parts? Also is this a major undertaking
> like it seems it would be?
> A few other questions, is it normal to have rezero the dial between bands
> with a newly aligned radio? And also is it normal to hear sideband
artifacts
> on strong locals as far away as 10 khz on either side of the station with
a
> 400' antenna no matter which selectivity position is used or was this
thing
> knocked back out of alignment? Thanks,
>
> Bob
> Millbury, Ma
>
>
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