I'm really surprised you had an issue with the KX33 supply. - JT
On Sun, Nov 19, 2017 at 7:31 PM, rich hurd WC3T <r...@wc3t.us> wrote: > 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 jt.to...@gmail.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 Message delivered to arch...@mail-archive.com
