[R-390] R391 tuning lock Keys

[Barry Hauser]

Hi Pete & Gang:

If you got those tuning lock keys from Hank Arney, it's possible he shipped
shorter ones he made up for the R-105/ARR-15 aircraft receiver.  He made up
a batch based on dimensions I supplied. The keys are identical except for
the length and the R-105 keys are too short.

If the length is right, there may be something wrong with the mechanisms in
your R-391, but that's much less likely -- would have to be the same thing
on both of them.

In the '391 manual, there are some sideways references to variations in
design.  It sounds like there were undocumented production changes.  I
suppose it's possible that  your unit is different, but the most likely
scenario is the first one -- R-105 keys.

If so, get back with Hank to exchange for the right ones.

Barry




----- Original Message -----
From: <g4gjl@btopenworld.com>
To: <r-390@mailman.qth.net>
Sent: Friday, August 22, 2003 5:33 AM
Subject: [R-390] R391 tuning lock Keys


> I have a problem with some repro tuning lock keys I recently acquired.
>
> They appear to be too short to reach the threaded innards of the auto tune
mechanism, but as I have never seen one of the keys previously, Im guessing
(hoping) that this is the problem.
>
>  Would some kind list member with an R391 take one of the keys out and
measure its length for me. I need to know the dimension from under the
handle, nearest the front panel, to the tip of the key shaftwhich engages
with the autotune mechanism.
>
> Also does any one know the thread size used on the keys? I tried to find a
mating nut from the junk box, to help me identify it, but could not get any
nuts to fit. Im sure it will be a UNC size, just dont know which one!
>
>
> Thanks
>
> Pete
> G4GJL
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