Do you also have a jumper on pin 6 of the microphone configuration header? You can check quickly by measuring for voltage at pin 6 of the microphone jack - it should be about 5 volts. You can check for proper soldering of the bias resistor by measuring for a similar voltage at mic jack pin 1.
If your Heil ProSet uses a dynamic element, you may (or may not) be able to use it with the bias resistor in place. If there is no DC blocking capacitor, the mic element may "sound funny" due to the DC current through it. The Elecraft/Heil Proset-K2 uses an electret element, and the Heil ProSet-iC (Icom) does too (and those need bias), but as far as I know, the others use a dynamic element. 73, Don W3FPR On 2/25/2011 7:52 AM, KA1YMX wrote: > I have a K2 with the SSB option installed and I am having issues getting the > MH2 microphone to work. I am currently using a Heil Pro-Set with the K2 and > everything is working fine. I have checked the back of the microphone > connector and everything appears to be connected properly. The 5.6k resistor > is installed between pins 1 and 6 and all of the jumpers are installed. The > PTT button on the MH2 works but my voice is not heard on a separate > receiver. According to my manual I should be able to use the same microphone > settings for the Mh2 and pro-set. Can someone help me out? ______________________________________________________________ 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
