If Mic Bias = OFF in the K3 mic menu, a blocking cap is not required for the Heil dynamic mics.
The AD 1-K is Heil's Headset to K3 adapter. (Also for Kenwoods.) No blocking cap inside. 73, Eric --- www.elecraft.com On 2/24/2012 2:39 PM, Buck - k4ia wrote: > Yes but. . . > > The Mic pinout used by Elecraft is the Kenwood pinout. So, you would > use a Kenwood adapter with a Heil product. Hence the issue with the > blocking cap - unless Heil has now made available a mic adapter cable > specifically for the Elecraft line. > > Buck > k4ia > > > On 2/24/2012 2:53 PM, Dick Dievendorff wrote: >> 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
