Bob Heil just told me that only the ICOM Heil adapters have blocking capacitors.
>> Of course NONE of the Kenwood or Yaesu have any blocking caps as none of their inputs have phantom voltage (thank goodness) Dick, K6KR -----Original Message----- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Don Wilhelm Sent: Friday, February 24, 2012 11:32 AM To: Tom Cc: elecraft@mailman.qth.net Subject: Re: [Elecraft] Heil Proset Headphones Tom, Since you have the Icom adapter now, I must ask - Is that a Proset-Ic? You can find the "Ic" designation in the end of the microphone tube that attaches to the earphone. If it is an "Ic" type, it has an electret microphone element which requires bias. I believe the Kenwood adapter has a blocking capacitor that will prevent the bias voltage from reaching the mic element. If you are using this with a K3, just plug it into the rear panel jack, no need for an adapter. If you are using it with the K2, rewire the Microphone Configuration Header to match your Icom adapter. 73, Don W3FPR On 2/24/2012 1:58 PM, Tom wrote: > I have the headset with the adapter for my Icom 756Pro. Which Heil > adapter do I need to use the headset with the K3? AD-1-K? > > Tom > KQ5S > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > 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:Elecraft@mailman.qth.net 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:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
