Maybe this has already been answered, but the Heil AD-1K, the red Kenwood adapter, is the appropriate adapter for the Elecraft K3 8-pin Foster connector.
The K3 also has a back panel 3.5mm jack that accepts the Heil microphone plug directly. Some prefer front connections, some prefer back. I sometimes prefer having the headphone connected through the front panel so I can pull it out and get speaker audio without fiddling with a menu. When the headphones are on the front panel, it seems easier to also have the microphone connection on the front. But all my microHAM connections are back panel, and when I'm set up for a contest, it's all back panel. 73 de Dick, K6KR -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Robert 'RC' Conley Sent: Wednesday, March 31, 2010 7:23 PM To: [email protected] Subject: [Elecraft] Heil HC-4, HC-5 I'm about to purchase a Heil Proset to use with my K3. Which "AD-1" will I need......??? ______________________________________________________________ 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

