Fred, The red adapter is the correct one, but depending on your Proset, it may or may not need bias. If it is the Proset-iC or the Proset-K2, it will need bias, but if it is any other, bias should not be applied (adding bias may saturate the microphone element and cause its output to be zero).
Please understand which microphone element you have and apply bias or not apply bias accordingly. A Heil microphone is not necessarily a Heil microphone, there are many models and you must be specific about wihic one you have if we are to offer good advice as opposed to "guesses". BTW - what are you referring to as the "Y" junction? I can guess that it might be the PTT jack on the Heil adapter, but please be specific so we do not have to make assumptions. 73, Don W3FPR On 2/25/2012 7:53 PM, Fredric Serota wrote: > I have Heil adapters with a blue band at the "Y" junction and with a > red/orange band. I thought the red banded one was correct for the K3 but > doesn't work for me at any bias setting (Using a proset headset or PR781 > microphone. Any ideas? The MH1 works fine. > > > > Fred, K3BHX > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[email protected] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
