Electric fences can make a lot of RF noise. --wunder, K6WRU On Aug 22, 2013, at 10:38 AM, Bill Gerth wrote:
> Phil, > > The electrical noise might have been a 12VDC to 120VAC inverter or perhaps a > bug zapper. Just a guess. > > 73, > BILL GERTH, W4RK > Jefferson City, MO > First Licensed 1954 > CWOPS #459 > 4 States QRP Group > KX3 (S/N 112) > > On Aug 22, 2013, at 12:23 PM, PHILIP GRAITCER <pgra...@me.com> wrote: > >> Last week, I asked for the group's help when I was in the field with a KX1 >> and an antenna that wouldn't tune. Here's my report. >> >> I trimmed the 66' wire that I have used as an End Fed Half Wave (with other >> rigs and tuners) to 41 feet, added a 15 foot counterpoise, and the rig tuned >> just fine. >> >> I was unable to do anything about the input voltage, since I lacked a coax >> jack that would have let me feed in 12 volts, instead of the internal 9v >> from the Lithium AA cells. So the power remained at about 1.8-1.9Watts. SWR >> was below 1.5, according to the KX1's display. I had left the 3S Lithium >> battery pack at home partly out of laziness, partly because of my fears of >> losing it in airport security. >> >> I did make a few contacts, so - mission accomplished. >> >> I did experience unusual QRM in a campgound in rural Montana on 40 meters. >> It sounded like a switching power supply - and it was across the entire >> band. Mostly steady, although it did stop now and then. I thought it might >> have been a generator from a nearby RV but couldn't hear one going. Any >> ideas what kind of electric interference that might be generated from nearby >> campers? There was a mix of RVs and tent campers at the campground. I was in >> a tent. >> >> Lastly, are there any mods to the KX1 that might get it to 5 watts if I put >> a 12v supply on it? I did the mod suggested by Elecraft, but the best I can >> get is around 4 watts with a 12V. I do get that on all bands. >> >> I'm in upper Michigan this week. This time with my 12V 3S Lithium battery. >> Keep a listen out for me! >> >> Thanks, >> Phil, W3HZZ >> ______________________________________________________________ ______________________________________________________________ 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
