[Kenwood] TS-930s TX audio

Thu, 8 Aug 2002 19:01:18 -0500

DO NOT set the bias on a 930/940 using a voltmeter. You must use a current
meter in line. The drivers are very sensitive to bias and will short with
just a little overcurrent.
I
It's OK to check for a general idea of the bias, but check ONLY.

Clif Holland, KA5IPF
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----- Original Message -----
From: "Guillermo" <[email protected]>
To: "John Peregord" <[email protected]>
Cc: "Kenwood" <[email protected]>
Sent: Thursday, August 08, 2002 6:48 PM
Subject: Re: [Kenwood] TS-930s TX audio

> If with low settings of mic gain audio sounds clipped, may be a bias
> problem. Check bias voltages of pre-driver, driver pair and final pair
> transistors. You should measure 0.6V...0.75V; put rig on tx, ssb, zero
> mic gain and test from emitter to base.
>
> Good luck
> Guillermo - LU8EYW.
>
>
> John Peregord escribi�:
> >
> > My TS-930S has a problem on the TX audio.  RX and CW transmit is fine.
I'm
> > told the audio sounds clipped and I must run with the mic gain almost
all
> > the way up.  I can turn it back and run with the processor on and it
sounds
> > better but still not quite right.  Maybe somebody has run into this
before?
> > Any help will be appreciated.
> >
> > John/KB8UMD
> >
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