K2 mic configuration. I use computer jumpers for the mic headers (get them at Radio Shack), you don't need the resistor in the 5V on the mic header unless you are using a electrodynamic mic, like a computer mic. I normally leave the 5V line unjumpered. I have some old computer boards, so I found a 1K surface mount resistor on one of the old boards, took a jumper and used my Dremel tool to cut away the short, then soldered the 1K surface mount resistor to the jumper. I then checked to make sure I had the 1K resistance across the jumper. This was how I got a resistor for the jumper, for use with a electrodynamic mic. All the other pins are jumpered across, with unmodified jumpers (direct shorts). Realize I created the jumper with the resistor to bias the 5V line for experimentation when I was trying various mics. I now only use my HC5 element in an old Kenwood MC50 Mic. There is no need for a bias resistor with the standard Heil Mics. Heil does make a mic for Icom rigs which requires a bias resistor.
______________________________________________________________ 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
