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Total 612 documents matching your query.

321. Re: [RFI] Trying to locate the Part 15 compliance note... (score: 1)
Author: "Hare, Ed W1RFI" <w1rfi@arrl.org>
Date: Wed, 13 Mar 2019 20:21:38 +0000
Those regulations all apply to emissions from the device. In the US, with very few exceptions, there are no FCC rules regarding immunity. This now-out-of-print-but-wisely-archived FCC document may he
/archives//html/RFI/2019-03/msg00013.html (21,190 bytes)

322. Re: [RFI] Trying to locate the Part 15 compliance note... (score: 1)
Author: "Hare, Ed W1RFI" <w1rfi@arrl.org>
Date: Thu, 14 Mar 2019 18:32:04 +0000
I agree with Jim; this problem is being caused by the fundamental signal of your station. Harmonics from that amplifier are down many tens of dB and if 500 W causes your problem but 100 watts does no
/archives//html/RFI/2019-03/msg00020.html (9,645 bytes)

323. Re: [RFI] SolarEdge Finds New Source of Solar System RFI (score: 1)
Author: "Hare, Ed W1RFI" <w1rfi@arrl.org>
Date: Mon, 3 Jun 2019 16:21:53 +0000
There are a number of possibilities here. Yes, the panels themselves could be generating noise by any of a few different mechanisms. What is not really known is whether this is an extreme near-field
/archives//html/RFI/2019-06/msg00010.html (13,469 bytes)

324. Re: [RFI] SolarEdge Finds New Source of Solar System RFI (score: 1)
Author: "Hare, Ed W1RFI" <w1rfi@arrl.org>
Date: Mon, 3 Jun 2019 16:29:43 +0000
I will. Tony is pretty good with RFI, but there are always a lot of variables in residential environments, and we can take the panel to a few different locations, just to eliminate confounding factor
/archives//html/RFI/2019-06/msg00012.html (15,097 bytes)

325. Re: [RFI] RFI Digest, Vol 199, Issue 3 (score: 1)
Author: "Hare, Ed W1RFI" <w1rfi@arrl.org>
Date: Sat, 3 Aug 2019 08:12:45 +0000
Devices that operate above 9 kHz are regulated by the FCC. The definition of ISM in Part 18 explains why fluorescent RF-lighting devices are regulated as ISM devices: "(c) Industrial, scientific, and
/archives//html/RFI/2019-08/msg00005.html (12,949 bytes)

326. Re: [RFI] FCC Limits on Power Lines (score: 1)
Author: "Hare, Ed W1RFI" <w1rfi@arrl.org>
Date: Tue, 20 Aug 2019 14:15:59 +0000
I am not sure what kind of emissions you are talking about. If you are talking about emissions that may radiate from the noise created by devices connected to power lines, which regulation may apply
/archives//html/RFI/2019-08/msg00036.html (9,722 bytes)

327. Re: [RFI] FCC Limits on Power Lines (score: 1)
Author: "Hare, Ed W1RFI" <w1rfi@arrl.org>
Date: Thu, 22 Aug 2019 19:01:27 +0000
It has been on the arrl.org page for a number of years now. Ed Is that link new? 73, and thanks, Dave (NK7Z) https://www.nk7z.net ARRL Technical Specialist ARRL Volunteer Examiner ARRL Asst. Director
/archives//html/RFI/2019-08/msg00037.html (8,898 bytes)

328. Re: [RFI] Professional Help (not Psychiatry) (score: 1)
Author: "Hare, Ed W1RFI" <w1rfi@arrl.org>
Date: Mon, 26 Aug 2019 20:02:39 +0000
RFI Services does offer professional noise locating, but by the time you pay travel costs and a daily rate, this will be a pricey solution. Google RFI Services and you should be able to contact them.
/archives//html/RFI/2019-08/msg00065.html (8,979 bytes)

329. Re: [RFI] Solar Panel RFI Update (score: 1)
Author: "Hare, Ed W1RFI" <w1rfi@arrl.org>
Date: Wed, 30 Oct 2019 15:29:00 +0000
Solar Edge has been pretty good about fixing these things, although it can be 10 weeks from first complaint to completed work. Its not just the west coast.... I never thought Id see it here in NW PA
/archives//html/RFI/2019-10/msg00039.html (11,821 bytes)

330. Re: [RFI] RFI Digest, Vol 203, Issue 15 (score: 1)
Author: "Hare, Ed W1RFI" <w1rfi@arrl.org>
Date: Fri, 13 Dec 2019 10:34:59 +0000
I like what I hard you say in one of your classes, Mike, and that was advice to the repair people to use an ultrasonic sniffer when they got up into the bucket truck, to verify that they can hear the
/archives//html/RFI/2019-12/msg00073.html (12,239 bytes)

331. Re: [RFI] Update: Tesla's Response to Solar Panel RFI (score: 1)
Author: "Hare, Ed W1RFI" <w1rfi@arrl.org>
Date: Tue, 17 Dec 2019 18:55:54 +0000
Let me see if I can put this into perspective. First, there are a number of factors here that are not usually made part of the discussions about solar arrays that are being installed. The first is th
/archives//html/RFI/2019-12/msg00137.html (23,261 bytes)

332. Re: [RFI] Update: Tesla's Response to Solar Panel RFI (score: 1)
Author: "Hare, Ed W1RFI" <w1rfi@arrl.org>
Date: Tue, 17 Dec 2019 19:39:13 +0000
Actually, they have a right to operate it unless it causes actual interference. That is all that the letter Is trying to say. Like I said in my previous email, your station has the potential to cause
/archives//html/RFI/2019-12/msg00139.html (13,380 bytes)

333. Re: [RFI] Update: Tesla's Response to Solar Panel RFI (score: 1)
Author: "Hare, Ed W1RFI" <w1rfi@arrl.org>
Date: Wed, 18 Dec 2019 20:10:26 +0000
Well, I was pretty clear that this is addressed primarily as harmful interference, irrespective of compliance with the emissions limits. The Part 15 rules do not require certification of ttis type of
/archives//html/RFI/2019-12/msg00166.html (12,975 bytes)

334. Re: [RFI] Question: Conducted vs. Radiated Emissions (score: 1)
Author: "Hare, Ed W1RFI" <w1rfi@arrl.org>
Date: Wed, 18 Dec 2019 20:39:05 +0000
The only device connected to the ac mains is the inverter. That would probably be tested on a C63.4-compliant test fixture. I am not sure whether they would use a panel and optimizer or simulate them
/archives//html/RFI/2019-12/msg00168.html (9,875 bytes)

335. Re: [RFI] Tesla's Response to Solar Panel RFI (score: 1)
Author: "Hare, Ed W1RFI" <w1rfi@arrl.org>
Date: Wed, 18 Dec 2019 20:42:20 +0000
Actually, we dont mind getting those reports. In general, Solar Edge has been scheduling repairs and getting them done eventually, but if that process fails for any reason, we can talk to Solar Edge
/archives//html/RFI/2019-12/msg00169.html (22,176 bytes)

336. Re: [RFI] Tesla's Response to Solar Panel RFI (score: 1)
Author: "Hare, Ed W1RFI" <w1rfi@arrl.org>
Date: Wed, 18 Dec 2019 20:44:49 +0000
If Tesla gets sued over any of this, absolutely every RFI problem for all time from any of their products, including up-and-coming EV wireless-power-transfer charging devices will be handled by their
/archives//html/RFI/2019-12/msg00170.html (11,575 bytes)

337. Re: [RFI] Tesla's Response to Solar Panel RFI (score: 1)
Author: "Hare, Ed W1RFI" <w1rfi@arrl.org>
Date: Wed, 18 Dec 2019 20:57:14 +0000
Weigh what you just said against the reality that Solar Edge has resolved a number of complaints, typically by replacing all of the equipment and rewiring it. The lawyers would never have allowed tha
/archives//html/RFI/2019-12/msg00171.html (11,262 bytes)

338. Re: [RFI] Tesla's Response to Solar Panel RFI (score: 1)
Author: "Hare, Ed W1RFI" <w1rfi@arrl.org>
Date: Thu, 19 Dec 2019 20:44:23 +0000
The early Solar Edge designs and installations were noisy. When solar first started being deployed, they were the only company that produced noise. Although no process is perfect, they have stepped u
/archives//html/RFI/2019-12/msg00190.html (20,012 bytes)

339. Re: [RFI] Tesla's Response to Solar Panel RFI (score: 1)
Author: "Hare, Ed W1RFI" <w1rfi@arrl.org>
Date: Thu, 19 Dec 2019 20:53:40 +0000
If you contact the FCC, it will probably send the case directly to ARRL. Not many years ago, the FCC did essentially nothing in response to complaints, stating that it didn't have the staff resources
/archives//html/RFI/2019-12/msg00192.html (15,149 bytes)

340. Re: [RFI] Tesla's Response to Solar Panel RFI (score: 1)
Author: "Hare, Ed W1RFI" <w1rfi@arrl.org>
Date: Thu, 19 Dec 2019 20:55:34 +0000
If it's a Solar Edge system, they will work directly with the installer to get the noisy components replaced, filtered and rewired. So far, no neighbor has refused to allow that to happen. Ed Suppose
/archives//html/RFI/2019-12/msg00193.html (11,689 bytes)


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