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Total 794 documents matching your query.

161. [RFI] Twisted pair in conduit? (score: 1)
Author: jimk8mr--- via RFI <rfi@contesting.com>
Date: Mon, 18 Dec 2017 19:09:11 -0500
I've recently discovered a major RF noise source at our Florida condo - pumps or other swimming pool related equipment about 200 feet from my attic dipole. I'm not planning to do any followup with ma
/archives//html/RFI/2017-12/msg00075.html (7,577 bytes)

162. Re: [RFI] Question about excess (score: 1)
Author: Wes Stewart via RFI <rfi@contesting.com>
Date: Tue, 9 Jan 2018 22:51:15 +0000 (UTC)
Coil 'em up or bundle 'em up and throw a tie wrap around 'em, or leave them dangle and stop worrying about it. IMHO, there is far too much hand wringing about this stuff. The only CM chokes in my sta
/archives//html/RFI/2018-01/msg00008.html (7,875 bytes)

163. Re: [RFI] Noise location tools (score: 1)
Author: jimk8mr--- via RFI <rfi@contesting.com>
Date: Wed, 17 Jan 2018 13:01:04 -0500
An ultrasonic dish is nice as a way to verify that it is a power line issue, and confirming that it is a specific pole. But in practice I don't expect the power company to fix anything without first
/archives//html/RFI/2018-01/msg00042.html (10,595 bytes)

164. Re: [RFI] New Dishwasher (score: 1)
Author: nm8rmedic via RFI <rfi@contesting.com>
Date: Sat, 27 Jan 2018 17:33:54 -0500
All, The Bosch is incredibly quiet, audibly. So much so, that it has a pilot light aimed at the floor on the front right corner to tell you it's running. It does an excellent job washing dishes, also
/archives//html/RFI/2018-01/msg00105.html (9,191 bytes)

165. Re: [RFI] LG machines can be OK (score: 1)
Author: nm8rmedic via RFI <rfi@contesting.com>
Date: Sat, 27 Jan 2018 17:59:41 -0500
Agreed, with KR1ST. Our Bosch bears that out.   It's model is: SHX68T56UC.   The RFI it generates can be mitigated. Scott Sent via the Samsung Galaxy S8+, an AT&T 4G LTE smartphone -- Original messag
/archives//html/RFI/2018-01/msg00106.html (9,174 bytes)

166. Re: [RFI] Dishwasher RFI Video (score: 1)
Author: Jim Stahl via RFI <rfi@contesting.com>
Date: Sat, 3 Feb 2018 14:23:41 -0500
Dave - Are you referring to the AirSpy R2? It does look interesting. It appears that with that, you will need the extra Spyverter R2 to go below 20 MHz. With the Spyverter, will the spectrum analyzer
/archives//html/RFI/2018-02/msg00027.html (8,935 bytes)

167. Re: [RFI] Wireless Power Transfer via 160 Meter Band (score: 1)
Author: JW via RFI <rfi@contesting.com>
Date: Fri, 9 Feb 2018 00:02:34 +0000 (UTC)
Coulg not be much worse than some of those wireless fence dog collars which I wrote about here a few years ago ... Nobody seems to be affected by those, de Jim WB5WPA This might be of interest to the
/archives//html/RFI/2018-02/msg00049.html (8,471 bytes)

168. Re: [RFI] Jamming (score: 1)
Author: JW via RFI <rfi@contesting.com>
Date: Wed, 14 Feb 2018 18:16:28 +0000 (UTC)
Sounds similar to the same malady affecting Radio Marti ... today 2018 From: Roger D Johnson <n1rj@roadrunner.com> To: RFI@contesting.com Sent: Wednesday, February 14, 2018 12:03 PM Subject: [RFI] Ja
/archives//html/RFI/2018-02/msg00053.html (7,247 bytes)

169. Re: [RFI] Connectors for 1/2" tinned copper braid strap? (score: 1)
Author: nm8rmedic via RFI <rfi@contesting.com>
Date: Tue, 27 Feb 2018 07:55:35 -0500
Agreed.   As an example, our local auto supply store will make up custom battery cables. They have a hydraulic crimping system for the end connectors and will make cable lengths to order.  If it will
/archives//html/RFI/2018-02/msg00096.html (10,797 bytes)

170. [RFI] Politics and RFI (score: 1)
Author: Jim Stahl via RFI <rfi@contesting.com>
Date: Sat, 17 Mar 2018 14:36:40 -0400
With the recent attention to trade deficits, unfair Chinese trade practices, etc., might this be an opportunity to catch somebodys attention to get tough on RFI certification and enforcement on all t
/archives//html/RFI/2018-03/msg00036.html (6,816 bytes)

171. [RFI] Politics and RFI (score: 1)
Author: Wes Stewart via RFI <rfi@contesting.com>
Date: Sun, 18 Mar 2018 18:17:29 +0000 (UTC)
In downtown Tucson, AZ the worst RFI pollution is caused by... the City of Tucson. A few years ago, the whole downtown was dug up and inconvenienced by the construction of a "Modern Streetcar" which
/archives//html/RFI/2018-03/msg00041.html (8,611 bytes)

172. Re: [RFI] Politics and RFI (score: 1)
Author: "Roger \(K8RI\) via RFI" <rfi@contesting.com>
Date: Mon, 19 Mar 2018 04:35:22 -0400
MI and a number of states are offering FREE solar installations to the so called middle class. IOW most home owners. Although you seem to be targeting imports from China, they come in from all over t
/archives//html/RFI/2018-03/msg00045.html (10,236 bytes)

173. [RFI] My really special noise (score: 1)
Author: Ron Hunsicker via RFI <rfi@contesting.com>
Date: Mon, 19 Mar 2018 11:08:32 -0400
Hello! Attached is a screen shot of a waterfall showing my really special noise.  The waterfall is a 50 KHz band incorporating the lower end of 40M.  This RFI is far broader than 50 KHz. I live in a
/archives//html/RFI/2018-03/msg00048.html (7,475 bytes)

174. Re: [RFI] Politics and RFI (score: 1)
Author: Jim Stahl via RFI <rfi@contesting.com>
Date: Mon, 19 Mar 2018 16:18:15 -0400
To circle back to my original thought, while there is indeed good stuff made in China, there is also a lot of cheap, RFI producing crap. And there are regulatory definitions such as components to dea
/archives//html/RFI/2018-03/msg00057.html (10,378 bytes)

175. Re: [RFI] The FCC's Class B Standards (score: 1)
Author: Jim Stahl via RFI <rfi@contesting.com>
Date: Wed, 21 Mar 2018 09:49:20 -0400
I can see logic in doing things this way: the equipment is designed and prototyped before the certification testing takes place. So rather than requiring going back to label a device, one can just pr
/archives//html/RFI/2018-03/msg00074.html (12,167 bytes)

176. Re: [RFI] ethernet switch with shielded case or low emission spectrum (score: 1)
Author: Edward Mccann via RFI <rfi@contesting.com>
Date: Thu, 29 Mar 2018 12:50:37 -0700
This overview came over the transom today. Interesting background, supporting what our RFI gurus have been saying. Passed for information. http://images.link.pentondes.com/Web/PentonDES/%7B31de5541-f
/archives//html/RFI/2018-03/msg00095.html (10,493 bytes)

177. [RFI] Low Voltage Lighting Questions (score: 1)
Author: Jim Stahl via RFI <rfi@contesting.com>
Date: Fri, 30 Mar 2018 13:54:45 -0400
Ive determined that I have one or more LED kitchen track/ceiling light installations in nearby condos that are causing RFI. Killing the breaker kills the RFI. Since these are in condo units occupied
/archives//html/RFI/2018-03/msg00098.html (7,659 bytes)

178. Re: [RFI] Recommendation needed: Whole house surge protection (score: 1)
Author: "EDWARDS, EDDIE J via RFI" <rfi@contesting.com>
Date: Mon, 30 Apr 2018 13:10:57 +0000
Eric, Polyphaser & Transtector are two that I've used on our commercial radio sites in past years. I understand those two have since been merged under one company (Infinite Electronics), but still se
/archives//html/RFI/2018-04/msg00022.html (9,234 bytes)

179. Re: [RFI] Solar Panel Manufacture Schedules Fix For Solar Panel RFI (score: 1)
Author: "EDWARDS, EDDIE J via RFI" <rfi@contesting.com>
Date: Wed, 16 May 2018 15:57:23 +0000
Isn't this issue similar to the old TV susceptibility issue? TV manufacturers don't want to spend the added dollars putting the filtering on all TV sets when it is needed on so very few to block RFI
/archives//html/RFI/2018-05/msg00056.html (9,769 bytes)

180. Re: [RFI] Solar Panel Manufacture Schedules Fix For Solar Panel RFI (score: 1)
Author: nm8rmedic via RFI <rfi@contesting.com>
Date: Thu, 17 May 2018 13:57:33 -0400
I believe the issue is conductor heating. Sheathed cable has to be in open-air to maintain its rating.  Conduit that encloses it impacts air flow.   Someone advise if my understanding is incorrect. 
/archives//html/RFI/2018-05/msg00068.html (10,599 bytes)


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