Thanks, Oliver, but it's not RF, it's audio. I was testing in 'test' mode. The solution was supplied by Iain a couple of posts up. I do have some toroids on order for another problem though.
73, Mike NF4L O. Johns wrote: > Dear Mike, > > Maybe you have solved this by now. But, if not, my experience might be > helpful. I also noted a sort of rough feedback when listening to the > monitor. In my case it was RF feedback. Maybe you have had a rough SSB > signal for some time and the monitor just revealed it to you? > > Anyhow, as Don Wilhelm says, the best thing is to look at your antenna feed > situation to try to minimize feedback. In my case, this was effective except > on 20 meters. Due to physical constraints that I can't change, my dipole > antenna passes about 15 feet above the table with my K3 on it. As it > happens, on that one band, there is lots of RF around. Maybe one of the > power lines is resonant, don't know. Anyhow, I tried lots of ferrite beads > on various lines, which reduced but didn't eliminate the problem. Finally, > and this is my suggestion to you, I put a ferrite bead right at the end of > the mike boom, just before the mike itself. This killed the RF feedback for > me. (This is using the Yamaha CM500 headset that was written about earlier > on the reflector.) Evidently the mike element itself is sensitive to RF. > > Hope you've solved your problem by now. > > 73, > Oliver, W6ODJ > > > > On 25 Nov 2009, at 6:01 PM, Mike wrote: > > >> I was playing with ALC and compression settings tonight, and turned on >> the monitor function. If I turn it up high enough to hear myself (around >> 9), I get a loud BRRRRRRRRRR squeal, that has an echoic component. >> Difficult to describe. >> >> I don't recall hearing that when I first set up the mic. I have V3.63. >> >> How can I regain use of the monitor? >> >> Mike NF4L >> >> To those who celebrate tomorrow, Happy Thanksgiving. >> >> ______________________________________________________________ >> 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 >> >> > > > ______________________________________________________________ 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
