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References: [ +from:cw_de_n5op@sbcglobal.net: 122 ]

Total 122 documents matching your query.

101. Re: [RFI] 2 MW Solar Farm (score: 1)
Author: Kim Elmore <cw_de_n5op@sbcglobal.net>
Date: Tue, 22 Sep 2020 15:51:03 -0500
Will do. I have s cheap SDR that I can use to examine the local radio environment. The question is what antenna should I use? I have a discone up at nearly 60 ft and I'm tempted to look at 3-54 MHz u
/archives//html/RFI/2020-09/msg00098.html (8,996 bytes)

102. Re: [RFI] RFI - A Losing Battle (score: 1)
Author: Kim Elmore <cw_de_n5op@sbcglobal.net>
Date: Tue, 22 Sep 2020 17:41:57 -0500
I think many need to carefully read what Ed writes here. Be extremely careful of wanting hard-set limits because that's what we'll get. Imagine "USC X.XX.XX Para 7 states radiated emission will be no
/archives//html/RFI/2020-09/msg00105.html (16,210 bytes)

103. Re: [RFI] RFI - A Losing Battle (score: 1)
Author: Kim Elmore <cw_de_n5op@sbcglobal.net>
Date: Wed, 23 Sep 2020 11:29:10 -0500
The bets advice I've heard in this regard is the cautionary "Could be arcing or overheating," because it truly *could* be (you don't yet know).  Then, you're doing them a favor! Kim N5OP On 9/23/2020
/archives//html/RFI/2020-09/msg00127.html (24,583 bytes)

104. Re: [RFI] New Interference at kk0sd (score: 1)
Author: Kim Elmore <cw_de_n5op@sbcglobal.net>
Date: Sun, 21 Mar 2021 21:28:05 -0500
It's odd that you can't hear it on your portable rx. That made me curious: What if this is something internal to your '847? Have you tried pulling your '847 and listening on a different receiver usin
/archives//html/RFI/2021-03/msg00070.html (13,292 bytes)

105. Re: [RFI] New Interference at kk0sd (score: 1)
Author: Kim Elmore <cw_de_n5op@sbcglobal.net>
Date: Sun, 21 Mar 2021 22:07:48 -0500
I'm still troubled that it seems you can hear it only on the DX-88 antenna now that you've ruled out odd stuff in your '847. Here's another hare-brained idea: try using a different antenna in your sh
/archives//html/RFI/2021-03/msg00076.html (14,967 bytes)

106. Re: [RFI] New Interference at kk0sd (score: 1)
Author: Kim Elmore <cw_de_n5op@sbcglobal.net>
Date: Mon, 22 Mar 2021 16:43:50 -0500
Thats a great idea, too! I once ran into an interference problem that was inherent to the antenna, but only under certain conditions. It didnt sound like Garys but I pulled a lot of hair out fixing t
/archives//html/RFI/2021-03/msg00084.html (21,394 bytes)

107. Re: [RFI] Wireless Power Transfer with electric vehicles - politics is over (score: 1)
Author: Kim Elmore <cw_de_n5op@sbcglobal.net>
Date: Mon, 12 Apr 2021 20:48:02 -0500
Bravo! Thank you, Tim! Kim N5OP Let's get back to 100% RFI. There is lots to clean up! 73 Tim K3LR RFI Reflector Founder and Moderator --Original Message-- From: RFI [mailto:rfi-bounces+k3lr=k3lr.com
/archives//html/RFI/2021-04/msg00128.html (10,745 bytes)

108. Re: [RFI] [External] Re: Wireless Power Transfer with electric vehicles (score: 1)
Author: Kim Elmore <cw_de_n5op@sbcglobal.net>
Date: Tue, 20 Apr 2021 19:03:16 -0500
Unless it's directly RFI related, please take this discission elsewhere. Kim N5OP -- Kim Elmore, Ph Kim Elmore, Ph.D. (Adj. Assoc. Prof., OU School of Meteorology, CCM, PP SEL/MEL/Glider, UAS, N5OP,
/archives//html/RFI/2021-04/msg00185.html (9,953 bytes)

109. Re: [RFI] Wireless Power Transfer with electric vehicles (score: 1)
Author: Kim Elmore <cw_de_n5op@sbcglobal.net>
Date: Wed, 21 Apr 2021 09:04:16 -0500
There is a 2 Mw solar farm about 0.75 mi S of my QTH. Ive been paying close attention and, as far as I can tell, it is as RF-quiet as the grave. Kim N5OP "People that make music together cannot be en
/archives//html/RFI/2021-04/msg00188.html (9,253 bytes)

110. [RFI] A quick Question about CMC placement (score: 1)
Author: Kim Elmore <cw_de_n5op@sbcglobal.net>
Date: Mon, 28 Jun 2021 11:30:46 -0500
Having just come off of filed day, the value of a CMC was, for the umpteenth time, demonstrated in the most practical sense. We were operating an FTDX5000MP for the CW station. We probably had the be
/archives//html/RFI/2021-06/msg00073.html (8,983 bytes)

111. [RFI] RG-400 UV Resistance? (score: 1)
Author: Kim Elmore <cw_de_n5op@sbcglobal.net>
Date: Tue, 13 Jul 2021 21:08:29 -0500
I have some RG-400 with which I'm making some K9YC CMCs. But I can't find anything specific about the jacket's resistance to sunlight: only that "FEP is resistant to sunlight." How resistant is it? D
/archives//html/RFI/2021-07/msg00045.html (7,342 bytes)

112. [RFI] Toyota Prius RFI? (score: 1)
Author: Kim Elmore <cw_de_n5op@sbcglobal.net>
Date: Thu, 12 Aug 2021 17:10:10 -0500
I'm forced to consider a new (to me) car in the next few months. For those of you that have them, is the Toyota Prius RFI quiet in its standard state on 2m and 70 cm? If not, what can be done to make
/archives//html/RFI/2021-08/msg00041.html (7,477 bytes)

113. Re: [RFI] Fwd: Water treatment system RFI? (score: 1)
Author: Kim Elmore <cw_de_n5op@sbcglobal.net>
Date: Mon, 20 Sep 2021 14:44:38 -0500
We have a water softener at our house as well. The brand escapes me, but I believe its powered by a wall wart and, from the heft of it, anold fashioned linear one at that. It consists of an ion excha
/archives//html/RFI/2021-09/msg00062.html (10,493 bytes)

114. Re: [RFI] Fwd: Water treatment system RFI? (score: 1)
Author: Kim Elmore <cw_de_n5op@sbcglobal.net>
Date: Mon, 20 Sep 2021 19:25:38 -0500
Unless the company that markets this will tell you how much hardness is removed, in grains per gallon, and offers you a money back guarantee that if, upon measuring your waters hardness at the inlet
/archives//html/RFI/2021-09/msg00066.html (9,852 bytes)

115. Re: [RFI] Fwd: Water treatment system RFI? (score: 1)
Author: Kim Elmore <cw_de_n5op@sbcglobal.net>
Date: Mon, 20 Sep 2021 19:37:39 -0500
Lawrence Livermore National Laboratory evaluated one and found it had no effect: https://www.osti.gov/biblio/567404 Kim N5OP "People that make music together cannot be enemies, at least as long as th
/archives//html/RFI/2021-09/msg00067.html (10,495 bytes)

116. Re: [RFI] Fwd: Water treatment system RFI? (score: 1)
Author: Kim Elmore <cw_de_n5op@sbcglobal.net>
Date: Tue, 21 Sep 2021 08:41:16 -0500
This is a good page explaining hard water and some of the chemistry behind it: https://en.m.wikipedia.org/wiki/Hard_water If your issue is truly hard water, get an ion exchange softener. It uses salt
/archives//html/RFI/2021-09/msg00074.html (10,999 bytes)

117. Re: [RFI] Fwd: Water treatment system RFI? (score: 1)
Author: Kim Elmore <cw_de_n5op@sbcglobal.net>
Date: Sat, 25 Sep 2021 09:07:42 -0500
There are multiple suckers born every minute. Many are especially vulnerable to technobabble. Kim N5OP "People that make music together cannot be enemies, at least as long as the music lasts." -- Pau
/archives//html/RFI/2021-09/msg00109.html (9,802 bytes)

118. Re: [RFI] Analog Wall Wart 29v DC (score: 1)
Author: Kim Elmore <cw_de_n5op@sbcglobal.net>
Date: Sun, 12 Dec 2021 22:56:18 -0600
I'll bet that it's 29 V open circuit and between to 24-28 V under load. See if you can create a test set up with those voltages to make sure. Kim N5OP On 12/12/2021 4:51 PM, Jim McCook wrote: I'm loo
/archives//html/RFI/2021-12/msg00025.html (8,362 bytes)

119. Re: [RFI] Noise from Generac Solar controllers? (score: 1)
Author: Kim Elmore <cw_de_n5op@sbcglobal.net>
Date: Thu, 16 Dec 2021 13:06:11 -0600
I mean, their honest if disingenuous. It meets all *existing* FCC refs. They fail to state there arent any. Ive come to the conclusion that home solar and amateur radio are mutually exclusive. Kim El
/archives//html/RFI/2021-12/msg00032.html (14,783 bytes)

120. Re: [RFI] Led desk lamps (score: 1)
Author: Kim Elmore <cw_de_n5op@sbcglobal.net>
Date: Sun, 26 Jun 2022 21:37:08 -0500
Dont be too quick to assume any and all LED bulbs are RFI screamers. They arent. Especially if they dont use an SMPS wall wart. If it uses a wall wart, replace it either 1) with a linear wall wart of
/archives//html/RFI/2022-06/msg00048.html (9,208 bytes)

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