[R-390] Green Grears

[Barry Hauser]

Hi Gang

Roger -- that's what we do here - a cyberspace version of the time-honored 
persuit of "kick the can."  That is, when we're not playing 
beating-the-dead- horse. ;-)
As far as I know, the "mod" consists only of an additional tapped hole in 
the front of the RF deck.

The green gear is a stamped stainless steel gear painted green on its 
concave side.  It has an oval hole and is secured by a small panhead screw. 
It mounts to a shaft on the front of the deck -- lower center right 
location.  The shaft has a mating oval keyway.

When the gear is mounted with the green side out and secured to that shaft, 
the teeth engages the gear train to keep it in synch when the deck is 
removed.  On many 390's, (and I think all '391's)  the gear stays on that 
shaft -- mounted one way for storage, the other for use.  The manuals refer 
to it as an "offset gear."

On other 390's, there is an extra tapped hole in the upper left front of the 
RF deck for stowing the gear. It's held there by the same screw used to 
mount the gear on the shaft.  That tapped hole, as I recall, is to the right 
of the big hole where the two cables pass through.  This might have been to 
meke it easier to find in the works and, perhaps, less likely to be 
overlooked and left in the lockup position -- only to be discovered after 
reassemby.  (Downside -- more likely to disappear as it could be purloined 
without the inconvenience of pulling the front panel.)

I cannot guarantee that ALL '391's have the original configuration (no upper 
storage position).  The RF deck may have been swapped for a later one as 
they are the same as on the R-390/URR.  You may find an RF deck with the 
tapped hole and no green gear -- either missing altogether or hiding in the 
original storage position.  Some initially have trouble locating it when 
properly stowed in the original position -- it isn't green.

Hope this helps.

Barry



















----- Original Message ----- 
From: <Flowertime01 at wmconnect.com>
To: <R-390 at mailman.qth.net>
Sent: Thursday, March 17, 2005 9:37 PM
Subject: Re: [R-390] Green Grears


> Fellows,
>
> I'm sorry I kicked this can. I just have a poor memory of my R390's
> production models.
>
> Better we all go back and read the TM's and consult the
> archives we have collected.
>
> Some new owners are looking for the real truth about the
> receivers they have, and are entitled to the best knowledge
> we have.
>
> Off the top of my head, I do not know the exact truth.
> Lets go read the archives again.
>
> Roger KC6TRU
>
>
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