Had the same problem on a M-10 setup that I was using. Do you run PL on your machine? I jumped the mic connection with a "Dummy mic" plug and the noise went away. Try that and see if that works.
Peter -----Original Message----- From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of NORM KNAPP Sent: Wednesday, May 13, 2009 8:14 PM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] GM300 repeater build ?2 Sounds like you may be experiencing the phenomenom known as "microphonics". ----- Original Message ----- From: Repeater-Builder@ <mailto:Repeater-Builder%40yahoogroups.com> yahoogroups.com <Repeater-Builder@ <mailto:Repeater-Builder%40yahoogroups.com> yahoogroups.com> To: Repeater-Builder@ <mailto:Repeater-Builder%40yahoogroups.com> yahoogroups.com <Repeater-Builder@ <mailto:Repeater-Builder%40yahoogroups.com> yahoogroups.com> Sent: Wed May 13 20:53:04 2009 Subject: [Repeater-Builder] GM300 repeater build ?2 I just got my cat-200 controller programed up and i notice some oddities with my tx audio. I have a large fan that runs in the cabinet and the radios pick up the noise. Also , when i am transmitting into the repeater , i can tap on the speakers for both the tx and rx radio and you can hear the tapping on the output of the repeater . Best described as the speaker is acting like a microphone and that how the fan noise is getting in Any suggestions ?? Maybe disable the speaker from the jumpers between pin 15 and 16 ?
