[Collins] 75S-1 Problem (update)

[Jim Brannigan]

Jerry,
Sorry, I thot you had a variable signal source available.
It is tough to do this kind of trouble-shooting without one.
The Handbook had some easy to build attenuators, it might be a worthwhile
project.

Jim

> Thanks Jim,
> I saw the article about re-building the  PTO, very good article. The
reason I
> referenced no ALC action at 1 micro volt  was twofold, I only have 2 well
> calibrated signal levels at my disposal, 1 and  50 micro volts, also the
IF gain
> was very high, but at least it was not high  enough to drive the ALC with
> under 1.5 micro volts.
>
> 73! DE N5MCJ, Jerry
>
> In a message dated 2/17/2005 7:46:32 A.M.  Pacific Standard Time,
> jbrannig at optonline.net writes:
> According to the  manual, the AGC threshold is 1.5 microvolts.
> Try checking the stage gains  against the manual.
>
> The CRA site has a very good article on the PTO  rebuild.
>
> Jim
>