Paul If you unplug that mic from the rear panel jack, can you measure any bias v.? I use a computer mic on the RP with bias set for rP.H BIAS. Steve Ellington [email protected] ----- Original Message ----- From: "paul alexander" <[email protected]> To: <[email protected]> Sent: Sunday, April 26, 2009 8:54 PM Subject: [Elecraft] K3 Rear Panel Microphone Jack Bias Voltage
>I recently assembled my K3 and am having some trouble getting a > microphone to operate. All of my station microphones are Motorola > handheld microphones. These are dynamic microphones which have a > built-in amplifier, to make them appear as carbon microphones. As > such, they require bias voltage. > > My first attempt was to connect the microphone via the rear panel > jack, using the following menu settings: > Mic SEL > rPL.bIAS > and > MIc + LIn > On > > Under these settings, I get no bias voltage on the rear panel microphone > jack. > > When I set Mic SEL for FPL.bIAS, I get bias voltage on the front > panel, and a microphone connected to the front panel connection works > as expected. > > FYI, the radio Serial Number is 2925 and the firmware is version 1.98, > MAR 31, 2009. > > Is it not possible to get microphone bias voltage on the rear panel > connector? Do I have something set up incorrectly? > > Any suggestions would be appreciated. > > Thank-you > > Paul Alexander > wb9ipa > ______________________________________________________________ > 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
