Wow. Going to try that. Thanks for this great post.
On Sun, Nov 19, 2017 at 19:23 stan levandowski <sjl...@optonline.net> wrote: > Most people on this Reflector are well educated and intelligent. > Apparently, I'm the exception because this one got by me. I'm only > owning up to this in the hope that it might help someone else on the > Reflector. > > For the last couple of years I've been bothered by a high background > noise level. It happened on my K1, K2, K3, KX2 and KX3. I attributed > this to the fact that my antenna has been in my attic for the last > fifteen years and propagation hasn't been good lately. > > > I just got official permission from the HOA to install an end fed wire > outside. I was thrilled. I put it up. The darn thing wasn't any > better than the attic doublet. Noisy as heck! What a letdown! > > > So I'm laying in bed last night reflecting on how my little KX1 was the > only Elecraft radio that never had noise problems and seemed to have a > receiver quieter than my K3. > > > Whoa! The KX1 always ran on batteries...could it be????? > > > I just took delivery on a brand new Kx33 Low RFI power supply a couple > days ago. It was advertised in the last QST. Previous to that, I've > been using a Samlex 1235M. For the heck of it, I connected my K2 to an > SLA battery and the noise was still there. But when I disconnected the > Kx33 power supply from the wall, the noise level dropped dramatically. > Then I switched to the Samlex and the noise came back. Back on the > battery, the noise dropped again as long as the power supplies were > unplugged and dead. > > > I have a laptop next to the computer. When I pulled the plug on the > laptop supply, the rest of the noise went away. I was down to S0/S1 and > CW signals were popping out all over the band again. Running the > computer on its internal battery did NOT contribute any noise. It was > the computer power supply. > > > Now that I am totally on batteries, I also appear to be immune from both > the gas furnace and the dishwasher motor both of which caused me > problems when using the AC supplies. YES, I HAD CHOKES ON ALL SUPPLIES, > CABLES, WIRE. > > > I've been on the air all day with my new outside antenna, on battery > power, making contacts near and far and I feel like I've hit the > jackpot. Since I'm totally QRP and CW, being limited to batteries is > not an issue. > > > If you're going to check your own supplies out, remember they've got to > be OFF/UNPLUGGED from the wall. Just disconnecting them from the > radio/computer isn't enough. It's RF. > > > 73, Stan WB2LQF > > > > > > > 1 > > ______________________________________________________________ > 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 > Message delivered to r...@wc3t.us -- --- 72, Rich Hurd / WC3T / DMR: 3142737 PA Army MARS, Northampton County RACES, EPA-ARRL Public Information Officer for Scouting Latitude: 40.761621 Longitude: -75.288988 (40°45.68' N 75°17.33' W) Grid: *FN20is* ______________________________________________________________ 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 Message delivered to arch...@mail-archive.com
