[R-390] CV-591 Audio

[mikea]

On Wed, Apr 07, 2004 at 07:55:05AM -0400, Jim Brannigan wrote:
> I just completed a substantial re-build and alignment of my CV-591 SSB
> converter.
> 
> The audio output is still low.  The Audio gain must be fully open to to get
> any reasonable audio output.
> 
> Is this a drive problem from the R-390A?
> Has anyone else experienced this problem?

That's interesting. 

There are a couple of things I'd look at in this situation:

o	Scope or use a good RF voltmeter to measure the IF level from the 
	R-390A; and
o	Use a good calibrated signal generator (HP 8640B, AN/URM25, etc.)
	to see what input to the CV-591 is needed to get good output level.

This should tell you which piece of gear to look at. After that, it's
a matter of chasing signals from stage to stage until you find where 
the gain is lower than it should be, something is misaligned, etc. 

Good luck and happy hunting!

-- 
Mike Andrews
mikea@mikea.ath.cx
Tired old sysadmin