I have 2 of the Heil adapters for Kenwoods, 8 pin round for the TS-2000 
and 590, and modular for the 480.   They each come with a 1/4 inch jack 
for PTT.  I have both a foot switch and hand switch paralleled in line 
with this jack.    Your head set will plug right in to the 3.5 mm (1/8 
inch) jack. for the mic.

I also have one from W2ENY and while I don't know all the versions he 
may offer, I think most of his are designed for electret  mics that need 
a voltage applied.   In radios where there is voltage supplied from the 
mic jack the adapter is wired with a dropping resistor to put the proper 
voltage on the proper wire for the mic.  The one I have also has the 1/4 
jack for PTT.

Which one you need depends on if you need voltage on the mic.

73, Steve KW3A




On 7/15/2011 12:04 PM, Michael Ryan wrote:
> Hi All:=20
>
> I'm looking to adapt my Cyber Acoustic computer headset to use on my =
> Yaesu FT-450, which has the 8 pin modular mic jack.=20
> I've looked at the W2ENY design services adapters and quite frankly, Bob =
> has been vary vague on answering my questions. I certainly don't want to =
> throw 30CAN for a pile of crap. =20
> So to that end, I might as well look at Heil. Is anyone using or has had =
> some experience with the Heil AD line of mic adapters?=20
> Would my 3.5MM mic plug on the headset plug right in or would I have to =
> modify the headset mic plug?=20
> Would I have to include or fab up a PTT switch or would simply switching =
> on and off the headset's mic switch activate and deactivate the PTT?=20
> =20
>
> TNX&  73:=20
>
> Michael De VO1RYN=20
>