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References: [ +from:qrv@kd4e.com: 263 ]

Total 263 documents matching your query.

161. Re: [RFI] RFI via Florescent Lights (score: 1)
Author: "qrv@kd4e.com" <qrv@kd4e.com>
Date: Fri, 08 Apr 2016 18:24:00 -0400
Ordered four 4' LED replacements last night. They fit in the existing fixtures with minor rewiring. David KD4E Would you have the part number for the Home Depot 4" foot LED fixture? I want to replace
/archives//html/RFI/2016-04/msg00024.html (9,724 bytes)

162. Re: [RFI] Recycling fluorescent tubes (score: 1)
Author: "qrv@kd4e.com" <qrv@kd4e.com>
Date: Mon, 11 Apr 2016 20:27:48 -0400
You mean setting them in a garbage can & wacking them with a long pipe then tossing them in the dumpster isn't the right way to dispose of them? 40 years later they tell us ... ;-) David KD4E David R
/archives//html/RFI/2016-04/msg00040.html (7,583 bytes)

163. Re: [RFI] DC Power supplies (score: 1)
Author: "qrv@kd4e.com" <qrv@kd4e.com>
Date: Fri, 06 May 2016 13:33:39 -0400
Ditto on the IOTA supplies with the IQ4 charge manager. I've had one floating across a large deep-cycle marine battery for years - it supplies clean 12VDC to all of the 12v devices in the radio room.
/archives//html/RFI/2016-05/msg00031.html (11,610 bytes)

164. Re: [RFI] MFJ 5008 ultrasonic receiver (score: 1)
Author: "qrv@kd4e.com" <qrv@kd4e.com>
Date: Sun, 22 May 2016 11:49:19 -0400
Have you looked at the new LimeSDR as the core of such a device? https://www.crowdsupply.com/lime-micro/limesdr 100 kHz 3.8 GHz David KD4E The APS RFI guys have the RADAR ENGINEERING ultrasonic recei
/archives//html/RFI/2016-05/msg00078.html (10,041 bytes)

165. Re: [RFI] Broadband RFI... (score: 1)
Author: "qrv@kd4e.com" <qrv@kd4e.com>
Date: Sat, 04 Jun 2016 23:50:22 -0400
Tom, Could you post the .pdf files to the RFI list home page, please? They got stripped and could be interesting to many. Thanks - David KD4E My preamp is homebrew, but Clifton Labs has a preamp that
/archives//html/RFI/2016-06/msg00027.html (9,913 bytes)

166. Re: [RFI] LEDs et al (score: 1)
Author: "qrv@kd4e.com" <qrv@kd4e.com>
Date: Sat, 02 Jul 2016 14:24:59 -0400
Great discussion on the RFI prevention and remediation side! We're out in the country so the RFI-challenge is less than in closer quarters. I'm as worried about the cognitive-interference as the RFI.
/archives//html/RFI/2016-07/msg00016.html (8,745 bytes)

167. Re: [RFI] A note from Sangean about switching power supplies (score: 1)
Author: "qrv@kd4e.com" <qrv@kd4e.com>
Date: Sat, 7 Jan 2017 10:58:43 -0500
Bureaucrats & politicians who believe they are smarter than you feel the need to control your choices. Since you're presumably too dumb to be energy efficient (save money), and to help them to save t
/archives//html/RFI/2017-01/msg00018.html (11,520 bytes)

168. [RFI] Lightning Grounds with Insulators in SC? (score: 1)
Author: "qrv@kd4e.com" <qrv@kd4e.com>
Date: Sun, 9 Apr 2017 13:42:44 -0400
Just saw this posted to the swap.qth.com list ... "Running along the South Carolina coast are two 3 phase 115 kv feeders that power all coastal towns for about 45 miles. Georgetown, SC to Myrtle Beac
/archives//html/RFI/2017-04/msg00000.html (6,944 bytes)

169. Re: [RFI] Lightning Grounds with Insulators in SC? (score: 1)
Author: "qrv@kd4e.com" <qrv@kd4e.com>
Date: Sun, 9 Apr 2017 20:28:37 -0400
The link I embedded did have the photo Bruce took but it may have been deleted from swap.qth.com I'll get out of the middle & let you and Bruce process this. He was concerned about potential RFI from
/archives//html/RFI/2017-04/msg00003.html (8,988 bytes)

170. [RFI] UV Lights Noisy? (score: 1)
Author: "qrv@kd4e.com" <qrv@kd4e.com>
Date: Sat, 15 Apr 2017 21:02:43 -0400
Anyone have experience with these around radio receivers? https://www.1000bulbs.com/product/2186/AU-LG10T55L.html They would be located near to my home office/radio room. I'm thinking of a pair of th
/archives//html/RFI/2017-04/msg00014.html (7,300 bytes)

171. Re: [RFI] UV Lights Noisy? (score: 1)
Author: "qrv@kd4e.com" <qrv@kd4e.com>
Date: Sat, 15 Apr 2017 22:36:30 -0400
That is a very very good word. Thank you for sharing it! 73, DavidC KD4E Same as any Flourescent, primary noise is the fixture/balast, built-in for a CFL, part of the fixture for a bulb like that. On
/archives//html/RFI/2017-04/msg00016.html (8,928 bytes)

172. Re: [RFI] What I want for Christmas with regards to RFI (score: 1)
Author: "qrv@kd4e.com" <qrv@kd4e.com>
Date: Sun, 16 Jul 2017 18:35:30 -0400
Awesome idea ... A possibly more likely scenario might be the ARRL negotiating a steeply-discounted package price for OO's with HRO, Gigaparts, or some other Ham dealer. Perhaps a coalition of privat
/archives//html/RFI/2017-07/msg00038.html (7,968 bytes)

173. Re: [RFI] What I want for Christmas with regards to RFI (score: 1)
Author: "qrv@kd4e.com" <qrv@kd4e.com>
Date: Mon, 17 Jul 2017 00:53:03 -0400
If you look at the entire list of items and the Web host maintenance - unless you are volunteering - someone will have to take ownership, buy a domain, build the Web site, etc. He was also talking ab
/archives//html/RFI/2017-07/msg00040.html (9,076 bytes)

174. [RFI] RFI & Alternator Replacement (score: 1)
Author: "qrv@kd4e.com" <qrv@kd4e.com>
Date: Thu, 21 Sep 2017 18:52:10 -0400
Is there any difference in the type of alternator installed and mobile RFI? I'm looking at this for my 1986 Suburban: https://play.google.com/store/apps/details?id=ngd.p_0001 Is a "self-exciting" 1-w
/archives//html/RFI/2017-09/msg00018.html (6,786 bytes)

175. Re: [RFI] RFI & Alternator Replacement (score: 1)
Author: "qrv@kd4e.com" <qrv@kd4e.com>
Date: Thu, 21 Sep 2017 21:46:32 -0400
Is a dual-bridge rectifier, as described here re. efficiency and durability http://faqs.alternatorparts.com/ also a better choice versus RFI or no? I just read through this http://www.k0bg.com/altern
/archives//html/RFI/2017-09/msg00019.html (7,804 bytes)

176. Re: [RFI] RFI & Alternator Replacement (score: 1)
Author: "qrv@kd4e.com" <qrv@kd4e.com>
Date: Sat, 23 Sep 2017 10:04:36 -0400
Awesome, perfect, that's exactly what I needed to know and to understand. Thanks Chris! 73, DavidC KD4E An old school externally regulated alternator with a _mechanical_ regulator is very, very noise
/archives//html/RFI/2017-09/msg00023.html (11,304 bytes)

177. [RFI] Recommend a Small Low-RFI Inverter? (score: 1)
Author: "qrv@kd4e.com" <qrv@kd4e.com>
Date: Sat, 30 Sep 2017 14:38:15 -0400
I'd like to install a small sine wave inverter in my '86 Suburban. The ones I have explored so far have online reviews reporting a variety of RF interference and audio noise. Can anyone recommend a l
/archives//html/RFI/2017-09/msg00056.html (7,618 bytes)

178. [RFI] Something is jamming 900mhz weather station (score: 1)
Author: "qrv@kd4e.com" <qrv@kd4e.com>
Date: Sat, 7 Oct 2017 16:36:46 -0400
I chased my tail trying to troubleshoot my David Vantage Vue weather station ... only to move it to the opposite end of the house on a whim ... and suddenly the RF link worked. I'm suspecting the Fle
/archives//html/RFI/2017-10/msg00002.html (7,409 bytes)

179. Re: [RFI] Something is jamming 900mhz weather station (score: 1)
Author: "qrv@kd4e.com" <qrv@kd4e.com>
Date: Sat, 7 Oct 2017 18:10:24 -0400
No wireless phones. Nothing I can think of on 900mhz ... other than the FlexNet 530x. Hmmm ... Wireless telephones ? Some of them operate in 900 mhz I have Davis here and not had any problem. Dale, K
/archives//html/RFI/2017-10/msg00006.html (8,863 bytes)

180. Re: [RFI] Something is jamming 900mhz weather station (score: 1)
Author: "qrv@kd4e.com" <qrv@kd4e.com>
Date: Sat, 7 Oct 2017 18:59:29 -0400
Just walked around with my Elenco F-2800 counter & the 530x looks pretty clean ... Hmmmm .... No wireless phones. Nothing I can think of on 900mhz ... other than the FlexNet 530x. Hmmm ... Wireless t
/archives//html/RFI/2017-10/msg00007.html (9,470 bytes)

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