[AMRadio] 75A4

[Todd, KA1KAQ]

On Mon, Dec 26, 2011 at 9:54 AM, CL in NC <mjcal77 at yahoo.com> wrote:
> OK, so I got them emblem wrong, thought the center is what counted, but it does have what I guess you Collins folks call wings sticking out from the round center.  So, now that the technical side of the emblem is sorted out, does anybodies expertise go beyond the emblem?  Is there supposed to be a bracket under the main tune dial that holds a shaft bushing?  I have the service  manual, but it does not include an illustrated parts breakdown.

Indeed, Charlie -

Early models had a small plate running across the span with a bushing
for the tuning shaft. This plate attached via two small screws to the
holes in the panel. Later models omitted this in favor of a 4:1
reduction drive for finer tuning. Sounds like yours had the 4:1 drive
installed and removed by a previous owner. This, or the removal of
said plate, will cause the tuning shaft to slop around.

~ Todd,  KA1KAQ/4