[R-390] R390 Receiver. Crystal bank access?

[dog]

The crystal bank has screws on the back and one in the front by the 
tube. It just lifts off after removing those screws. There's a couple 
variations, some have screws in the top of the box, but it's the same 
idea. There's an oven inside with insulation.

You have to remove the whole RF section to get at the bandswitch. 
Sometimes a bit of de-ox will help. Sometimes just using it a lot helps. 
Sometimes it need re-registering. It's all in the book and not magic, 
but detailed work. Be careful if you mess with the switch contacts, 
they're fragile.

Dave N3DT

On 10/8/2019 19:41, John Gedde wrote:
> How do you access the crystal bank and the bandswitch in an R390?  The
> crystal case seems to be riveted shut.  Am I missing something?  The
> bandswitch is flaky at times and could likely use a cleaning.
>
>   
>
> John
>
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