Hi Barry I just updated our clubs K3's and none of them have this problem. I even checked them into the dummyload. We have some early serial K3's and some fairly new ones.
I would use a simple receiver like the Degen and a simple 3 turn loop of about 30mm. I would sniff around the K3 and your shack. The K3 for whatever reason seems to be more sensitive to radiated in-shack emissions. A lot of hash is radiated from the K3's front panel, it just might be a grounding screw thats not making proper contact. On other radios my LCD monitors cause no problems however the K3 seems to pick up some minor hash on 80 meters. I have common mode chokes on all the K3's inputs and outputs. It might not be a problem, it just might be that the K3 is so quite you notice every squeak on the band. On other radios the phase noise might well be hiding all this crud. Its a double edge sword having a very good receiver! One thing that I have noticed about the K3. Since I am a casual club K3 user I use the K3's on and off. I have noticed that the receiver seems to be getting "warmer" much like any old analogue radio. I see no discussions about this. In my opinion the receiver is sounding better than anything else that I have heard. On early firmware versions the K3's sounded sharp and harsh. However in the last 3 or 4 firmware updates the receivers tone quality seems to be improved. It may just be my imagination!???????? John --- On Sat, 10/17/09, Barry Simpson <[email protected]> wrote: > From: Barry Simpson <[email protected]> > Subject: [Elecraft] K3 12m problem > To: [email protected] > Date: Saturday, October 17, 2009, 4:18 PM > I uploaded the latest beta release > and found that there is a loud noise > (like electric motor interference) when tuning at the SSB > end of 12m. The > noise stops when you stop tuning. > > > > I hadn't noticed the problem before so I regressed to the > previous beta > version but the noise is still there. > > > > Has anyone else found this problem ? > > > > I think I will check the situation with earlier versions. > > > > 73 > > > > Barry Simpson VK2BJ > > ______________________________________________________________ > 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
