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Total 541 documents matching your query.

301. Re: [RFI] Update: Tesla's Response to Solar Panel RFI (score: 1)
Author: "Hare, Ed W1RFI" <w1rfi@arrl.org>
Date: Mon, 23 Dec 2019 00:34:19 +0000
And just what would you have lawyers do? Solar Edge is already handing the problems and replacing systems. Tesla is a new player and that initial letter was written by their lawyers. You saw the resu
/archives//html/RFI/2019-12/msg00220.html (13,731 bytes)

302. Re: [RFI] Tesla's Response to Solar Panel RFI (score: 1)
Author: "Hare, Ed W1RFI" <w1rfi@arrl.org>
Date: Mon, 23 Dec 2019 00:38:31 +0000
Two models that were tested in the ARRL Lab were 58 dB over the limits. (They seemed to be the same design, rebranded.) There is no doubt that these would devastate the AM broadcast band. If you are
/archives//html/RFI/2019-12/msg00221.html (9,987 bytes)

303. Re: [RFI] RFI from solar system and inverters ....sma inverters (score: 1)
Author: "Hare, Ed W1RFI" <w1rfi@arrl.org>
Date: Wed, 5 Feb 2020 15:36:06 +0000
Under FCC rules, the device must meet radiated emissions limits about 30 MHz. They are high enough that if a neighbor's device just meets the rules, you could typically see about an S7 signal or nois
/archives//html/RFI/2020-02/msg00025.html (10,432 bytes)

304. Re: [RFI] FCC Limits on Harmful Interference (score: 1)
Author: "Hare, Ed W1RFI" <w1rfi@arrl.org>
Date: Fri, 7 Feb 2020 16:09:43 +0000
The FCC has never determined a level that constitutes "harmful interference." For Amateur Radio, the term is defined essentially as the repeated disruption of a licensed radio service. If the FCC wer
/archives//html/RFI/2020-02/msg00035.html (8,669 bytes)

305. Re: [RFI] FCC Limits on Harmful Interference: Clarification (score: 1)
Author: "Hare, Ed W1RFI" <w1rfi@arrl.org>
Date: Fri, 7 Feb 2020 16:11:47 +0000
We don't get to set any limits; the FCC does, and they would probably set limits at the median value of man-made noise in all residential environments -- about S7 on 10 MHz, for example. "the worded
/archives//html/RFI/2020-02/msg00036.html (8,780 bytes)

306. Re: [RFI] RFI from Seagate USB Disk Drive (score: 1)
Author: "Hare, Ed W1RFI" <w1rfi@arrl.org>
Date: Sun, 9 Feb 2020 03:44:31 +0000
How is the noise on 6 meters? The device does not have radiated emissions limits below 30 MHz, but at 30.001 MHz, it must pass radiated tests. If it is noisy on 6 meters, I'd like to take a look at i
/archives//html/RFI/2020-02/msg00063.html (8,095 bytes)

307. Re: [RFI] Light bulb QRM at VHF (score: 1)
Author: "Hare, Ed W1RFI" <w1rfi@arrl.org>
Date: Wed, 25 Mar 2020 14:07:21 +0000
Unfortunately, they didn't list the manufacturer or model. If the manufacturer is selling 120v models in US big-box stores, I would get a couple of them to see if they are radiating about Part 15 lim
/archives//html/RFI/2020-03/msg00051.html (7,540 bytes)

308. Re: [RFI] Light bulb QRM at VHF (score: 1)
Author: "Hare, Ed W1RFI" <w1rfi@arrl.org>
Date: Wed, 25 Mar 2020 15:39:18 +0000
No, and about the time that I was set to revisit that, Chris Imlay, our DC attorney, left and we brought on David Sidall. I need to revisit this with him to see if we can freshen the case and continu
/archives//html/RFI/2020-03/msg00053.html (9,990 bytes)

309. Re: [RFI] The ARRL Contest Update for April 1, 2020 (score: 1)
Author: "Hare, Ed W1RFI" <w1rfi@arrl.org>
Date: Wed, 1 Apr 2020 18:29:33 +0000
https://www.emcrules.com/2017/04/can-incandescent-light-bulbs-cau<https://www.emcrules.com/2017/04/can-incandescent-light-bulbs-cause.html> se.html<https://www.emcrules.com/2017/04/can-incandescent-l
/archives//html/RFI/2020-04/msg00006.html (12,655 bytes)

310. Re: [RFI] Does anyone recognize this RFI? (score: 1)
Author: "Hare, Ed W1RFI" <w1rfi@arrl.org>
Date: Wed, 15 Apr 2020 18:03:00 +0000
Most of those switchers do drift with temperature. They also show little jumps in frequency with voltage changes, so that, too, can be diagnostic. The real question is not usually the one hams always
/archives//html/RFI/2020-04/msg00028.html (11,213 bytes)

311. Re: [RFI] Power Line Noise (score: 1)
Author: "Hare, Ed W1RFI" <w1rfi@arrl.org>
Date: Fri, 17 Apr 2020 05:07:46 +0000
This is a key point, Mike. Many noise sources that might be very strong when you are right on top of them are not heard at all at the amateur station. This is why the signature method is the only rea
/archives//html/RFI/2020-04/msg00043.html (12,890 bytes)

312. Re: [RFI] Power Line Noise (score: 1)
Author: "Hare, Ed W1RFI" <w1rfi@arrl.org>
Date: Fri, 17 Apr 2020 14:40:38 +0000
I am fluent in typo! Input! RFI Services Michael Martin 240-508-3760 <http://rfiservices.com>rfiservices.com<http://rfiservices.com> Thanks Ed your in foot is extremely valuable RFI Services Michael
/archives//html/RFI/2020-04/msg00049.html (15,078 bytes)

313. Re: [RFI] Power Line Noise (score: 1)
Author: "Hare, Ed W1RFI" <w1rfi@arrl.org>
Date: Fri, 17 Apr 2020 14:45:11 +0000
There is also no certainty that the horizontal wires are equally balanced, so it is not necessariy going to cancel, imbalances on what else is connected to those wires on each side of the source, imb
/archives//html/RFI/2020-04/msg00050.html (12,608 bytes)

314. Re: [RFI] Power Line Noise (score: 1)
Author: "Hare, Ed W1RFI" <w1rfi@arrl.org>
Date: Fri, 17 Apr 2020 19:06:37 +0000
There are actually at least two different "near field" regions. The first is the reactive near-field region, where the electric and magnetic fields can decay rapidly, are not necessarily in the far-f
/archives//html/RFI/2020-04/msg00054.html (14,340 bytes)

315. Re: [RFI] Oven RFI help needed (score: 1)
Author: "Hare, Ed W1RFI" <w1rfi@arrl.org>
Date: Thu, 23 Apr 2020 14:48:41 +0000
This cannot be emphasized enough -- doing any repairs to neighbors' equipment can carry a risk of liability. This is especially true for any device where malfunction such as this may cause a fire. A
/archives//html/RFI/2020-04/msg00070.html (12,022 bytes)

316. Re: [RFI] Samsung oven RFI update (score: 1)
Author: "Hare, Ed W1RFI" <w1rfi@arrl.org>
Date: Fri, 24 Apr 2020 17:48:24 +0000
Samsung may have an actual fix. i would imagine that this is major concern to them because an stove or oven that turns on unexpectedly is fire risk, whether it is the stovetop or oven. Gents, I wound
/archives//html/RFI/2020-04/msg00077.html (8,764 bytes)

317. Re: [RFI] Samsung oven RFI update (score: 1)
Author: "Hare, Ed W1RFI" <w1rfi@arrl.org>
Date: Wed, 6 May 2020 17:07:40 +0000
I do know that Paul Cianciolo has worked with a few hams on this issue. I am not sure if he made any headway on it with Samsung, but I will see him later this week and I can ask. He reads most of the
/archives//html/RFI/2020-05/msg00025.html (13,755 bytes)

318. Re: [RFI] Samsung oven RFI update number II (score: 1)
Author: "Hare, Ed W1RFI" <w1rfi@arrl.org>
Date: Sat, 23 May 2020 14:14:41 +0000
A stove that turns on due to external events is broken. What they are telling you is that it is broken but they don't know how to fix it. Ed If it is new, tell the company that sold it to you, you wa
/archives//html/RFI/2020-05/msg00073.html (22,823 bytes)

319. Re: [RFI] Noise centered around 20 meters (score: 1)
Author: "Hare, Ed W1RFI" <w1rfi@arrl.org>
Date: Sat, 23 May 2020 23:37:02 +0000
Even without social distancing, that can be a challenge at best. The neighbor probably bought some device or another that is making noise. Let's assume he bought a whole basement worth of commercial
/archives//html/RFI/2020-05/msg00085.html (16,112 bytes)

320. Re: [RFI] Samsung Oven Update #3 (score: 1)
Author: "Hare, Ed W1RFI" <w1rfi@arrl.org>
Date: Fri, 29 May 2020 20:54:51 +0000
In my experience, when companies feel there is some potential product liability, they generally move pretty quickly. When Eaton, for example, found that its AFCIs were tripping, they put engineers on
/archives//html/RFI/2020-05/msg00125.html (10,350 bytes)

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