Hi all, I use at my K3 a HEIL PRO SET ELITE "IC", I had this as I use it at my old ICOM IC-275H as well. Now I recognised that I have a small noise on modulation like a fan that gives me some power output when I just push PTT. OK I have in my shack 2 additional fans for cooling the PA so I switched them of. The noise is lower but still there. and there are no other noise sources. So my setting for the HEIL headset are: - MIC: 25 - CMR: 25 - MIC SEL: RP + HIGH BIAS - MIC+LIN: OFF Do you have any idea if I can change setting to cancel that noise ? I can not believe that the microphone is that sensitive to pick up all little noises around. best regards Erwin/DK5EW
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