Hi- thanks to Dave k3dcw for the quick answer on my Signalink USB question earlier. As I said earlier I am a relative newcomer having just built K3 #6663 and trying to get various accessories hooked up to it. My old radio is a Yaesu FT-450 with which I was using a Heil GM-5 Mic and a Heil Pro-Set Plus along with a Heil foot switch. - I like to start by just getting the GM-5 mic to work with the K3. - Questions: -Do most people use the front panel mic plug or the rear panel 3.5mm mic plug on the KIO3 panel? - Is there anyone on the list who is using a GM-5 that I could hook up with? - Heil says I need a CC-1-K adapter to match the GM-5 to the K3. Judging from the pic on their web site - it plugs into the K3 front panel. Is that the only option with the GM-5 -- front panel connection? -- what other types of mics are folks using with the K3?? that can be plugged in to the real panel plug on the KIO3?? I know might be a dumb question.