[Kenwood] TS930 output power - continued...

Sun, 10 Feb 2002 21:55:12 -0000

Very thank You, Clif, for so worthful suggestion - You are right, as allways
!

I do not have osciloscope here, but I measured with RF voltmeter voltage on
DRV connection.
With DRV connector open (no dummy load, sorry) I get 3.3V (2.9 ... 3.8) on
all bands.
With DRV connected (final gained) measured on R174 RF voltage for CAR set as
for nominal power - 0.6V...1.0V.
From 18KHz band up, is possible with CAR set RF up to max.2.5-3.5V.
As I see, problem is probably in final unit ... or maybe on filter unit (?!)
.

Can You point me once again what might happend, please ?

Wieslaw

> If the radio does not develop full power there will not be an ALC reading.
> Remember the ALC reading indicates how much the radio has to turn down to
> maintain full power without exceeding it.
>
> You need a scope to determine if the problem is in the signal unit or the
> final unit. Look at the output from the signal unit and see if it drops as
> you go higher in frequency.
>
> Not copyrighted, I'm here to help the ham community. Feel free to pass on
my
> hints and tips...
>
> Clif Holland, KA5IPF
> AVVid
> Authorized Kenwood and Icom Amateur Service
> www.avvid.com
> 1-800-214-5779
>
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
>
>
> > My trusty 930 fails again...
> >
> > I am working CW.
> > On bands up to 14MHz I have full output, controled by ALC level (CAR
pot).
> >
> > Above this (18..29MHz), I have zero ALC indication on the meter.
> > With CAR pot I can have only abt 80...40W (indicated on the trx meter).
> > Current Ic indication is decrasing with band (so as power) - from abt 8A
> on
> > 14MHz to abt 3A on 28MHz.
> > AT unit seems working properly (tunes on all bands !). Working on dummy
> > load - same efect, so not antenna matter...
> >
> > I do not observe any smoke and other disasters.
> > I cleaned some connectionns on Signal Unit - no success..
> >
> > What can I do more ?
> >
> > Thanks in advance for any help.
> >
> > 73' Wieslaw SP8SW (ex SP8NTW)
> >
> >
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>
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