Thanks Eric, That is why I asked, now I can go back to RF hunting and fix my antennas.
Don ~73 Don KD8NNU On Thu, Jan 12, 2012 at 2:04 PM, Eric Swartz - WA6HHQ, Elecraft wrote: > 35 is too high of a compression setting. A setting of 35 can easily > pick up internal electrical noise in the radio, in addition to shack > background noise. This is much higher than normal compression setting > and results in excessive microphone input gain. > > Its not unusual to hear some low level acoustic noise from inside the > K3 when transmitting. > > 73, > > Eric > --- > www.elecraft.com > > > On 1/12/2012 10:46 AM, [email protected] wrote: >> Hi Don, >> >> First I agree that that is not a normal setting to run that high. >> Normally I only have it in the range between 10 to 20 mostly at 15 >> like >> you do. >> >> I did the experiment as when the antennas were hooked with the RF >> issue, I found that dialing down compression to under 10 sometimes >> helped reduce the RF triggering. >> >> So as stated I wanted to find the boundries when connected only to >> the >> dummy load. The part that it showed power output at that high level >> of >> compression is not that suprising. >> >> What concerns me is that I clearly heard internal to the K3 something >> like a ferrite buzzing. I put my ear directly on the top of the case >> to >> listen and this buzzing was internal. >> >> I only want to know could this be considered normal. >> >> Or if there is an internal component problem and my K3 is more >> sensitive >> to RF issues than normal which is contributing to my problems. >> >> ~73 >> Don >> KD8NNU >> >> >> On Thu, Jan 12, 2012 at 1:26 PM, [email protected] wrote: >> >>> Don, >>> >>> My first reaction is that compression of 35 is way too high. I >>> never >>> go over 15 or so because of all of the background noise in the shack >>> that is picked up by the mic at high compression settings. >>> Something >>> of that sort is perhaps what you are hearing .. maybe a fan or other >>> hum-like sound in the local environment. High compression makes the >>> system super sensitive to low level sounds. >>> >>> Don K7FJ >>> >>> ______________________________________________________________ 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
