Ruben, MIC.SEL is FP.L (front panel), rP.L (rear panel) and LINE IN. This is for selecting where you plugged the microphone in.
The HC-4 DOES NOT use Bias. 73, Tom N2CU <>< K3 #3582 ______________________________________________________________ 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

