I also had the same problem as Tom did, I bought my K3 a little over 2 years ago ( ser # 22xx range)
I use mine only for VHF work, an with the rig running in the background listing for band openings I was getting headache's...could figure it out for the longest time but some complants on the reflector got me looking into it. so i sold the K3 3 months later Elecraft came out with the DSP/ lowpass filter mod for the K3. The person that bought my rig had the mods done and said it made a very big improvement..... I waited a while and watched what the others posted about the up grade and it was good. so I went and bought another K3.... all I can say is it is a all toghter a different rig than the first one. the high frq artifacts are gone and the receive audio is very pleasent. it's just that I can't keep up with all the up grades that Elecraft keep comming up with........ Don't think the Elecraft crew ever sleep...... I love the APF........ Ed K7WIA -- View this message in context: http://elecraft.365791.n2.nabble.com/Problem-with-K3-receive-audio-tp6257176p6257856.html Sent from the Elecraft mailing list archive at Nabble.com. ______________________________________________________________ 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