[R-390] Low sensitivity on 7-8 Mhz band

[Walter Wilson]

A bad crystal would affect more than just the one band.  I'm thinking
you may have a bad trimmer cap in one of the RF cans for the 4-8 MC
range.  A bad trimmer cap would make it difficult to peak the upper
end of the 4-8 MC range, so the greatest loss in sensitivity would be
in the 7-8 MC range.  Did you have any difficulty getting a good peak
during alignment at the 7600 KC point?

Walter - KK4DF

On 4/16/06, Massimo Penna <massimo.penna3 at tin.it> wrote:
> Hello everobody,
>
> I have a Stewart-Warner R-390A receiver. I aligned it but a low sensitivity
> remain only on 7-8 Mhz band. What is the problem?
> Thank you and regards.
>
> Massimo
>
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