[R-390] Accessing Crystals in an R-390/URR
gary.biasini at shaw.ca
gary.biasini at shaw.ca
Sat Sep 28 15:42:23 EDT 2024
Barry,
Two screws in front of cover - easily accessible. 2 screws on back of cover - accessible through 2 holes on back panel. Not that much work.
Gary I. Biasini
________________________________
From: Barry Scott <r-390-bounces at mailman.qth.net> on behalf of Barry Scott <72volkswagon at gmail.com>
Sent: Saturday, September 28, 2024 12:19:50 PM
To: R-390 Mailing List <r-390 at mailman.qth.net>
Subject: Re: [R-390] Accessing Crystals in an R-390/URR
Please disregard that message. There's an oscillator sub-chassis for sale
on eBay at the moment and I can see where that cover wraps around the
entire side of the other part of the sub-chassis so it couldn't be lifted
out that way. Also, there are two screws on the inside of the bottom that
can't be removed without removing the entire sub-chassis.
My 10.5 MHz crystal is running a bit high and I have another one I'd like
to try but that's probably more work than I want to do just to test it out.
Thanks,
Barry - N4BUQ
On Sat, Sep 28, 2024 at 12:49 PM Barry Scott <72volkswagon at gmail.com> wrote:
> Is it possible to access the crystals in the crystal oscillator chassis
> without removing the entire oscillator sub-chassis? I've had that
> sub-chassis out but didn't pay much attention to the crystals and how they
> might be accessed while still in the radio.
>
> I see four screws accessible from the right side of the main frame and two
> screws at the top that are accessible from inside the left-top cover of the
> crystal oscillator. If those are removed, can the cover be slid up and out
> or is it necessary to pull the entire sub-chassis? If it can be removed
> that way, then are the crystals located such that they can be changed out?
>
> Thanks,
> Barry - N4BUQ
>
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