Author: Tony Brock-Fisher via RFI <rfi@contesting.com>
Date: Fri, 14 Sep 2018 17:15:02 -0400
Fair Rite 2631626202 core, mix 31. Sent from my iPhone From my testing, the optimizers internal switchers continue to run (at 200kHz) anytime the optimizer gets power from the panel - therefore durin
Author: Tony Brock-Fisher via RFI <rfi@contesting.com>
Date: Sat, 6 Oct 2018 16:38:36 -0400
/'They determined the noise to be one and the same'. / This is a HUGE win. Now you have them concentrated on fixing the offending location, instead of spending their time spinning their wheels, looki
How much RFI is generated by those 30 Amp ESC controllers to run the motors? de Jim WB5WPA I've seen quad-copters controlled via a program to fly in various patterns. What if they received a target s
Does anyone have experience with Insteon remote control gear? RFI generated? RFI susceptible? Any good? 73, Dan -- N3ND _______________________________________________ RFI mailing list RFI@contesti
What antenna type? Any balun at the feedpoint etc? Some antenna designs and methods for matching, feeding are_less_ prone to common mode currents developed inside the house than others on receive. I
Author: Edward Mccann via RFI <rfi@contesting.com>
Date: Mon, 26 Nov 2018 16:44:54 -0800
Andy: Keep in mind a linear wall wart will offer transformation to the lower voltage from a specific voltage input: think transformer winding ratio. If its 110/115 VAC in and 12 V out, youve landed a
We have a 2015 Prius V. I have done several mobile entries in the Florida and Pennsylvania QSO parties with it. In short, there is significant RF noise generated by the gasoline engine when doing hea
Author: Edward Mccann via RFI <rfi@contesting.com>
Date: Fri, 30 Nov 2018 11:03:32 -0800
Re your last; You are a wise and patient man who will enjoy a long and happy marriage. Sent from my iPhone _______________________________________________ RFI mailing list RFI@contesting.com http://l
Today Costco has a special offer on a Firman Power Equipment W02981 3200/2900 watt Inverter Generator ($479). Does anybody have any experience with this generator or this brand, either RFI or general
I didn't see my favorite. The 1:1 Flux coupled transformer. I use these as "ground-breakers" in the shack on the end of a long coax cable to a low-gain rx-only antenna. This style was particularly ef
Re: Locating this 80m band RFI source. See the work done by N1BCG and his use of the KiwiSDR TDoA (time difference of arrival) DF technique to try and identify the location of this signal here: https
More importantly, Tim, they used TDoA (time difference of arrival) KiwiSDRswhich have time-stamped data secured from our GPS system and drewequal-time hyperbolic lines/curves which would eventually i
Author: Edward Mccann via RFI <rfi@contesting.com>
Date: Thu, 20 Dec 2018 16:30:07 -0800
Andy: Just for completeness, coins you advise size and type of ferrite and number of turns and before or after wall warts (for those items having one)? Congratulations on your thorough job! Ed McCann
Author: Edward Mccann via RFI <rfi@contesting.com>
Date: Thu, 20 Dec 2018 20:31:17 -0800
Thanks for the details Andy. Jims contribution to our delightful hobby surpasses anyones wildest expectations!! We are outrageously fortunate to have him in our midst. And congratulations again on yo
Author: "EDWARDS, EDDIE J via RFI" <rfi@contesting.com>
Date: Fri, 11 Jan 2019 16:48:20 +0000
Robert, When it comes to electric power distribution, the MOVs that would apply are the ones used for "electrical distribution power line Surge Arrestors". See links below for photos, descriptions &
Jim years ago I had some Canadian ham put my ladderline stuff on his webpage as if it was his work. I politely wrote him and asked him to remove it and simply link to it. He refused, so I contacted h
Hi John, I once bought some big cores from these guys, https://www.jpmsupply.com (FT140-61 ferrites). At that time, a little over a year ago, they were the best prices I could find. They do have a c
Author: Stephanie WX3K via RFI <rfi@contesting.com>
Date: Tue, 5 Feb 2019 12:11:06 -0500
Someone with a spectrum analyzer and direction antenna gear can help find the source(s) Stephanie _______________________________________________ RFI mailing list RFI@contesting.com http://lists.cont
ONCOR appears to be implementing an actual Smart Distribution Grid in some parts of the north central Texas service area as opposed to the usual substation hub, spoke and wheel topology. All well and
Author: Curt Bartholomew via RFI <rfi@contesting.com>
Date: Thu, 21 Feb 2019 17:08:33 +0000
I highly recommend a Trane. Do not use Goodman - they are only "contractor/builder" grade and die in a few years. I have gone thru 5 Goodmans in 12 years (we have 3 heat pumps) and my Trane is by far