SB-101 Transmit Distortion Problem

[mike bryce]

mark... it's a wild shoot, but do you have an extra ssb filter you can try?

scope the signal going in and then see what it looks like on the other end.

does the audio on receive clip too?
or only on transmit?

--
Mike Bryce WB8VGE
SunLight Energy Systems
"Electricity at the speed of light"

> From: Mark Johnson/Ontario/IBM <mjohnson at CA.IBM.COM>
> Reply-To: Mark Johnson/Ontario/IBM <mjohnson at CA.IBM.COM>
> Date: Sun, 17 Dec 2000 19:49:03 -0500
> To: HEATH at LISTSERV.TEMPE.GOV
> Subject: SB-101 Transmit Distortion Problem
>
> Hello Heath Team;
>
> Once again I'm turning to this team for some ideas...
>
> I have an SB-101 (I have referred to this in the past as the SB-101 from
> hell), that has a slight distortion on SSB. The on air reports are that it
> seems to be clipping or just slightly distorted.
>
> I put an AF generator on it today and scoped through the audio pre-amp
> stages etc. and I see clean audio right up to the input of the 6AU6
> Isolation amp (V2). Audio looks clean out of the balanced modulator.
> Voltages along the path look good. The receiver, CW transmit functions are
> all fine...Just reports of slightly distorted audio on SSB. Bias is
> adjusted as per manual, there are no other symptoms...
>
> I'm out of ideas at this point.....Thoughts from the Team???
>
> Tnx and Best of The Season to All!!
>
> Mark V. Johnson
> Service Delivery Branch Manager
> Metro Banking & DPM Profession
> 416-718-2726
>
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