[Collins] 32S-3 drive issue

[jbrannig at optonline.net]

Have you tried aligning the transmitter (or receiver)?
 
Jim

> Gentlemen:
> 
> 
> 
> A problem with a 75S-3B that someone might be able to help with.
> 
> 
> 
> When tuning up on 20 meters, full clockwise rotation of the MIC 
> GAIN is necessary in order to get anywhere near full-scale 
> deflection of GRID CURRENT in the TUNE position of the FUNCTION 
> switch. This is not a problem on any other band.
> 
> 
> 
> Similarly, full clockwise rotation of the MIC GAIN is necessary 
> to achieve the proper level of plate current and power output on 
> voice peaks. In fact, full output (and appropriate ALC 
> indications) on voice peaks is only possible with a high-
> impedance crystal mike. I can't get there with a lower-output 
> ceramic mike.
> 
> 
> 
> I have replaced tubes V1 through V5 with no apparent change.
> 
> 
> 
> Any thoughts?
> 
> Ken, W3ESH