How does one run an extra ground wire down the center of the cord?

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> On Dec 24, 2014, at 6:11 AM, Butch Bussen <[log in to unmask]> wrote:
> 
> One other comment, I had severe rf in my audio problems when I got my 590, 
> that radio seems more suceptable than most.  I had to put in a couple of 
> those line isolaters and that solved the problem, I can dig up the link if 
> anyone wants it.  There were some other fixes with those microphones, 
> running a wire down the center of the cord from base of microphone to 
> ground on the radio as I recall.  That might have b een the 50, but those 
> microphones have been known to have r f i problems as well.  As mentioned 
> above, I went from a 2000 with no r f i at all to the 590 and had severe 
> r f i which the coax isolators fixed.
> 73
> Butch
> WA0VJR
> Node 3148
> Wallace, ks.