[CQ-Contest] Kenwood ts-850sat RFI issues

Bob AD5VJ rtnmi at sbcglobal.net
Thu Mar 25 19:33:36 PDT 2010

Wanted everyone to know:

 I finally resolved the RFI issue with the TS-850sat and Drake L-7 setup.

 I had to end up regrounding everything and then the computer to the same
ground as all the other equipment. 

After a generous ferrite treatment which resolved nothing but the
interference to my keyboard, the computer grounding gave me a final solution
and am active again on cw at full power out along with rtty and psk, etc.

Still don't understand why I had no trouble with all the other rigs I had in
here before the Kenwood 850. I had everything from Icom 756 orig to a Yaesu
FT-1000MP MKV and even a Kenwood TS-2000. 

Maybe it works better HIHI

Oh well all's well that ends well.

Thanks to everyone for the help


> -----Original Message-----
> From: cq-contest-bounces at contesting.com [mailto:cq-contest-
> bounces at contesting.com] On Behalf Of Bob AD5VJ
> Sent: Sunday, March 14, 2010 11:03 PM
> To: cq-contest at contesting.com
> Subject: [CQ-Contest] Kenwood ts-850sat RFI issues
> I have had no RFI issues using the same antennas and setup with any
> other
> rig and computer control for over 5 years until setting up this Kenwood
> TS-850SAT.
> Anyone using a Kenwood ts-850sat please email me off list if you have
> solved
> an issue with rf interference interrupting your computer control.
>  Present interface cable with built-in level converter is from:
> http://www.g4zlp.co.uk/unified/KenwoodCAT.shtml
> If there is a known problem with this cable also please let me know as
> well.
> I really don't want to invest in filtering it up and modifying it for
> contesting if it has an inherent problem living in a ham shack.
> 73,
> Bob AD5VJ
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> CQ-Contest mailing list
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