[Milsurplus] HRO RAS AVC Issues

[David Stinson]

Isn't there an issue with National receivers, where the
phenolic on the coil contact board absorbs moisture over
the years and becomes "leaky" for AVC voltage?
I had an NC-100 do that once.  It was the AVC feed to
the RF amp IIRC, and I ended-up just disconnecting
the AVC line at that point from the terminal board.
AVC worked acceptably that way.
Anyone remember details?
Dave S.

On 8/9/2021 9:05 AM, Ray Fantini wrote:
>
> Noticed that my HRO RAS was starting to be less sensitive then some of 
> the other radios around the shop so decided that I would pull it apart 
> and see what’s going on. This is the first time in about ten years 
> that I have had the covers off.
>
> The Navy RAS is a copy of the National HRO jr receiver with several 
> changes that include having a lower IF frequency of 175 kHz and a 6V6 
> audio output tube unlike the civilian version.
>
>


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