>From wormser Fri Jul 11 12:32 CDT 1997

From: Alan Wormser 

Message-ID: <199707111732.AA04480
Subject: Freq Jump - Fixed

To: G3SEK
frankf1056
rtwodtwo
Date: Fri, 11 Jul 1997 12:32:34 -0500 (CDT)

Cc:wormser (Alan Wormser)

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I had a problem with my TS-830S jumping frequency - about 100 Hz.at a time

and I got lots of replies when I aksed for help.  Ham radio is full of a

bunch of really great folks - no wonder I love this hobby!  For me,

cleaning the FIX button worked (yes, the "FIX" button was broken ;-) ).

I'm posting this to thank everyone, and to help anyone else in the same

situation.  All these suggestions were excellent.



>From Ian G3SEK, Art N2AH, Paul K0PW, Frank Kb0ZFN, and many others:



Grounding the AF/AVR board:Connecting a wire from TPG post to

ground screw, and inserting star washers between board and heat sink,

In accordance with Kenwood bulletin - appeared in QST Hints & Kinks

in the mid-1980s.

..........

>From Bill Allen W7US



Hi Alan,I had this problem with my 830 and found that the grounding

screws on the pc boards were not making good contact

..........

>From Dale R. Parfitt W4OP



Although I have not seen this problem in a Kenwood, I have seen it in

Icom and Yaesu- both with the same cause- small single turn variable

caps. In case of the Yaesu it was a frequency netting cap on a

heterodyne oscillator- drove me nuts. It occurred randomly and never

when I had the rig open. A hint from another ham sent me looking in that

direction. Replaced 2 or 3 and that was the end of it. Hope this helps.

........

>From Brian Sherrod KJ5AG



Check the external VFO DIN jack in the rear.  Actually you will need to

check it from the inside.  If you have one, put the matching DIN plug into

the jack and pull it in and out several times.  



This is a common problem with the 830.  This jack has a contact which is

shorted WITHOUT a external VFO.  If the contacts get dirty, it will do

exactly as you described.  You might also want to spray a small amount of

contact/electronic solvent on the jack and do the plug in and out as I

mentioned before.

........

>From Dennis Clemenson NT0V

NOTE:This solution is also in the 1997 edition of ARRL's book,

"Hints and Kinks"



I had what sounds like the same problem with a TS-830S.  Turned out the

switch labeled "FIX" was intermittent.  It is in the path of the voltage

to the VFO and if it has some extra resistance, the frequency would

change.  I tried "Deoxit" and that worked for a while but finally I

jumpered around the switch contact since I never used crystals for

operating.  Try operating the switch many times and see if goes away for

a while.

........

>From John 

SOURCE: The QRZ Windows Ham Radio CDROM