[Kenwood] TS930 S-Meter adjustments

Fri, 9 Aug 2002 11:18:04 -0400

From what I hear, most s-meters are out of adjustment.  I'd like to do the same
calibration for my '940.  I don't have a signal generator, though.  Is there a
way to do this without one?  Can one be constructed?  I'd imagine that you could
make a crystal oscillator at the frequency of interest, but adjusting the level
may be a challenge.

Mark

-----Original Message-----
From: Bob Henderson [mailto:[email protected]]
Sent: Friday, August 09, 2002 11:09 AM
To: Clif; [email protected]
Subject: Re: [Kenwood] TS930 S-Meter adjustments

Thanks Clif

I do truly have a service manual.....it's just that apparently I can't read!
I have now looked closely at step 12 of the rx alignment and lo...it says
..s-meter adjustment.  Duh!  At least it certainly looks more like it.
However, I am still puzzled by what the instruction manual says as opposed
to the service manual.  The instruction manual which came with the radio
says in Section 8.  Maintenance and Adjustment, page 37 para 9..S-Meter
Adjustment (Signal Unit)......."Disconnect the antenna with the transceiver
in receive mode.  Zero-point adjustment:
Adjust VR2 for meter pointer zero indication.  If a standard signal
generator (SSG) is available, adjust VR3 so that the S-meter indicates
"S-9", at 14.175 MHz for a 40db (50uV) signal."

I guess the technical author must have been having a bad day!

Thanks again.

Bob 5B4AGN, P3F, ZC4ZM

----- Original Message -----
From: "Clif" <[email protected]>
To: "Bob Henderson" <[email protected]>
Sent: Friday, August 09, 2002 2:42 PM
Subject: Re: [Kenwood] TS930 S-Meter adjustments

> If you truly have a service manual try step 12 of the RX alignment.
>
> Clif Holland, KA5IPF
> AVVid IS MOVING, SEE THE WEB-SITE FOR MORE DETAILS
> AVVid
> Authorized Kenwood and Icom Amateur Service
> www.avvid.com
> 1-800-214-5779
>
>
> ----- Original Message -----
> From: "Bob Henderson" <[email protected]>
> To: "Jose B.da Silva" <[email protected]>; <[email protected]>
> Sent: Friday, August 09, 2002 7:47 AM
> Subject: Re: [Kenwood] TS930 S-Meter adjustments
>
>
> > Hi Joe
> >
> > Thanks for your response.  I have checked page 63 of my service manual
> here
> > and it makes no mention of S-meter adjustment.  In fact, I can find no
> > reference to it anywhere in this manual. I guess my copy is a different
> > version to the one you have.  Can you tell me what your manual says
about
> > S-meter set up and what pots are involved please?
> >
> > Many thanks
> >
> > 73
> >
> > Bob 5B4AGN, P3F, ZC4ZM
> >
> >
> > ----- Original Message -----
> > From: "Jose B.da Silva" <[email protected]>
> > To: "Bob Henderson" <[email protected]>
> > Sent: Friday, August 09, 2002 12:10 PM
> > Subject: Re: [Kenwood] TS930 S-Meter adjustments
> >
> >
> > > According to the service manual that I have, VR2 and VR3 in the signal
> > unit
> > > are not for receiver adjustments. They are for TX MIX balance.
> > > The S meter adjustment procedure is in the page 63.
> > >
> > > Joe, PY5CEK
> > > ----- Original Message -----
> > > From: Bob Henderson <[email protected]>
> > > To: <[email protected]>
> > > Sent: Thursday, August 08, 2002 1:31 PM
> > > Subject: [Kenwood] TS930 S-Meter adjustments
> > >
> > >
> > > > My TS930S s-meter zero and sensitivity need to be adjusted but I am
> > darned
> > > > if I can find which are the appropriate pots to do this.  My
handbook
> > says
> > > > VR2 is zero and VR3 is sensitivity.  The only board I can see which
> > seems
> > > to
> > > > have VR2 and VR3 is the signal board and the service manual says
these
> > are
> > > > for something else entirely.
> > > >
> > > > Can someone who has done the adjustment point me in the right
> direction
> > > > please?
> > > >
> > > > Many thanks
> > > >
> > > > Bob 5B4AGN, P3F, ZC4ZM
> > > >
> > > >
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