I had the same problem, with a quite noisy shack, the 8877 I use on 144 MHz have a pretty big fan, plus I have other fans on the PC, on the Network rack and so on. I solved the problem using a carefully selected microphone. I chose a SM-57 instrument pickup microphone, from Shure. The choice followed this criteria: 1) Cardioid (highly directive) pattern, with low sidelobes. 2) Dynamic microphone, with a low sensitivity. 3) Almost flat audio response, with limited bass roll-off.
I keep the TX equalizer completely flat, and I set the mic gain at level 20. A little bit of compression can give you the right punch, without affecting readability, let's say 10. These settings work well for me, but keep in mind to set the Mic Gain looking at an external wattmeter: remaining on Tx, and not talking, you shoudn't see any power going out. Good luck! 73 de Giulio IW3HVB > > I have a problem with noise in the shack. > On transmit it is picked up by the mic. Other than lowering the RF gain I > understand that > there is a setting which could reduce or eliminate this > some where in the config. Any tgoughts would be appreciated. > > Thanks > Jay > Jay Rodaman > > ______________________________________________________________ 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
