Re: [Elecraft] Atmospheric noise increases
May I have copy of Presentation also? Thank you, NORRL Lee On Fri, Jul 24, 2015 at 10:33 PM, Dale Putnam daleput...@hotmail.com wrote: May I me too Please? Sent from my NOOK Scott M via Elecraft elecraft@mailman.qth.net wrote: I'd like to see it Phil,if you don't mind Scott W0SGM copy of my Power Point presentation on this setup (given to my local club), I'd be happy to email it back to you. Phil, W0XI, Lawrence, KS. __ 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 daleput...@hotmail.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 ldormis...@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
Re: [Elecraft] Atmospheric noise increases
I had a problem like that. I shut off all power to my house at the circuit breakers. I ran my radio on batteries and noticed the noise went away. By turning on the breakers one at a time the culprit was found. It was the switching power supply for the cable TV. Richard __ 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
Re: [Elecraft] Atmospheric noise increases
Hello W7HD, I often see a noisy wave go across my P3 (with K3); however, I've never seen it oscillator slowly but I'll look more closely. The source of this noise is not in my house.but could be a neighbor's. You noted that your noise level drops to S1 when that source is not there? When I see a steady but slowly moving hump on the P3 display my noise floor remains about the same but at S2.5 or so on 20 meters during the day. I'm two blocks from a shopping center, population of Lawrence is 100,000. I've been able to drop that noise floor, thus increasing S/N by nearly 3 S units, using a 20-meter beverage antenna (one wavelength due to short back yard) and attaching it to the AUX BNC input of my K3 for diversity reception. To that I've started using the K3's built in APF filter during CW op to improve listening too. If you'd like a copy of my Power Point presentation on this setup (given to my local club), I'd be happy to email it back to you. Phil, W0XI, Lawrence, KS. aldenmcduffie (at) sunflower.com --- This email has been checked for viruses by Avast antivirus software. http://www.avast.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
Re: [Elecraft] Atmospheric noise increases
May I me too Please? Sent from my NOOK Scott M via Elecraft elecraft@mailman.qth.net wrote: I'd like to see it Phil,if you don't mind Scott W0SGM copy of my Power Point presentation on this setup (given to my local club), I'd be happy to email it back to you. Phil, W0XI, Lawrence, KS. __ 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 daleput...@hotmail.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
Re: [Elecraft] Atmospheric noise increases
If it is wide band, but not all over the entire band,, it's probably not atmospheric noise, more likely created by humans [i.e. your neighbors]. Especially if it drifts up and down slowly. Odds generally are that it's correlated with the slowly increasing use of LED and CFL lights ... and possibly increases in indoor agriculture. The latter can generally be identified by a fairly strict schedule of on and off. I have one near me. :-) 73, Fred K6DGW - Northern California Contest Club - CU in the 50th Running of the Cal QSO Party 3-4 Oct 2015 - www.cqp.org On 7/23/2015 5:07 PM, w...@msn.com wrote: Has anyone else noticed the dramatic increase in atmospheric noise lately? On 20M, 30M, and 40M especially, I see a wide-band noise source wandering back and forth across the bands. At times it almost looks like a sine wave on the waterfall display. The noise will vary from an S3 up to a 20/S9. It is especially troublesome on the frequencies I use most, namely, 10.1389, 14.045, 14.070, 7045, and 7070. With the antenna disconnected, the noise drops to S1 or less. __ 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
