Maybe the dog needs a Chew toy?  hehehahaha
----- Original Message ----- 
From: "tom behler" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Thursday, March 10, 2011 9:12 AM
Subject: Re: KB8TYJ 20-meter RFI problem solved, I think finally!


>    Steve:
>
> I tried an RF choke on the mic cable, and, although it reduced the RFI
> somewhat, it did not eliminate it completely.
>
> As a short-term fix, I may just try your solution with the additional 
> ground
> cable between the mic and the rig.
>
> Kevin has sent me a very informative e-mail that summarizes the floating
> ground issue with the Heil mic and its associated cable, especially as far
> as Kenwood TS480's are concerned.  It seems that the problem is related to
> which version of the rig you have, and that can be determined by the rig's
> serial number.
>
> I'll check into this as soon as I can.
>
> I already have written to Heil about the problem, so will see what they 
> say
> too.
>
> Thanks to everyone for bearing with me through this whole thing.  I now 
> know
> the problem, so the solution becomes easier.
>
> 73 from Tom Behler:  KB8TYJ
>
> ----- Original Message ----- 
> From: "Steve Forst" <[log in to unmask]>
> To: <[log in to unmask]>
> Sent: Thursday, March 10, 2011 9:09 AM
> Subject: Re: KB8TYJ 20-meter RFI problem solved, I think finally!
>
>
> Good news Tom,
>
> Just like being a drunk or drug addict, admitting the problem is the
> first step to getting  it solved.   In your case, finding the source of
> the trouble out of the    multitude of possibilities is a big step.
>
>
> If you have the same mic as i have, it has a cord about 8 ft. long.
> Try winding up the excess into a coil, along with the ferrite.   I
> replaced my cable years ago with a shorter  one that ends in a 1/8 plug,
> so I can switch between headset and Gold Line very fast.
>
> Just for the heck of it, you may want to try a ground wire between mic
> and radio and see what happens.  Either a jumper with clips, or loosen
> the nut at the toggle switch and slip a wire under.
>
> Now that I think about it, i remember Heil's web site explaining the
> need to  ground these things better, and to  jumper one of the pins on
> the 8 pin connector to the shell of the connector.  I think the mic has
> a floating ground that needs to be brought to chassis ground.
>
>
>
> Maybe you will have a happy ending to "How I spent My Spring Vacation".
>
> 73, Steve KW3A