[Kenwood] Tuning rate too fast on TS-940S

Dr. David Kirkby david.kirkby at onetel.net
Fri Jul 8 14:22:20 EDT 2011


On 07/ 8/11 07:10 PM, Dr. David Kirkby wrote:
> On 07/ 8/11 04:02 PM, Jerry Holcomb wrote:
>> My experience having operated many of them, is they all tune at the same
>> rate. Is it possible that one of yours already has the Giehl chip? Here
>> is the link to his site:
>>
>> http://home.fuse.net/jg/Chips/TS940Chip.html
>>
>> See if that might be the case and let us know. 73's Jerry N0XWR
>
> I've got 10 kHz/rev if turned slowly.
>
> The other TS-940S (which I felt tuned slower), is feeling rather sick, so I
> don't know what that's doing. I can check the chip later.
>
> Is 10 kHz/rev normal in CW and SSB modes - it seems pretty quick to me!
>
> Dave
>


I got sent details of the mod by

I also managed to find it on the web

http://web.archiveorange.com/archive/v/MGb3FTNGFWMOTx53ikaY

to quote from there

==============================
International Radio -IRI Labs 1/2 tuning rate Mod
on Digital B unit - (X54-1840-000)(B/2)
Cut  D106,D105,D110, and D109
Digital B unit is located behind the Sub display  in a shielded Box

Its easy to do but a bit of a pain to reverse..
================================

I guess someone found they wanted to reverse it.

I'm going to check what the tuning rate of my Yaesu FT-ONE is. That seems better 
to me, but I don't know what it is.

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