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References: [ +from:n4zr@contesting.com: 336 ]

Total 336 documents matching your query.

261. Re: [RFI] Signal on 14.200 (score: 1)
Author: Pete Smith <n4zr@contesting.com>
Date: Thu, 20 Oct 2011 17:34:50 -0400
I was hearing it about an hour ago, definitely peaking Northwest - China? 73, Pete N4ZR The World Contest Station Database, updated daily at www.conteststations.com The Reverse Beacon Network at http
/archives//html/RFI/2011-10/msg00020.html (8,414 bytes)

262. Re: [RFI] Signal on 14.2 MHz (score: 1)
Author: Pete Smith <n4zr@contesting.com>
Date: Fri, 21 Oct 2011 21:37:37 -0400
I'll listen again - I sure wouldn't take my results as definitive. 73, Pete N4ZR The World Contest Station Database, updated daily at www.conteststations.com The Reverse Beacon Network at http://reve
/archives//html/RFI/2011-10/msg00029.html (9,729 bytes)

263. Re: [RFI] Switch mode Power Supplies (score: 1)
Author: Pete Smith N4ZR <n4zr@contesting.com>
Date: Mon, 16 Jan 2012 17:16:33 -0500
OTOH, you do have to wonder how hard it was for their reviewers to contain themselves from saying "this thing is junk." The numbers and scope displays are pretty terrible. AD5X's review of the Sample
/archives//html/RFI/2012-01/msg00035.html (10,504 bytes)

264. Re: [RFI] Smart meters (score: 1)
Author: Pete Smith N4ZR <n4zr@contesting.com>
Date: Tue, 17 Jan 2012 13:42:00 -0500
Can we, maybe, please, start talking about RFI again? 73, Pete N4ZR The World Contest Station Database, updated daily at www.conteststations.com The Reverse Beacon Network at http://reversebeacon.net
/archives//html/RFI/2012-01/msg00059.html (11,472 bytes)

265. Re: [RFI] Original message and replying (score: 1)
Author: Pete Smith N4ZR <n4zr@contesting.com>
Date: Sun, 22 Jan 2012 06:54:44 -0500
Sound the alarm! The dreaded EOTV (Elecraft off-topic virus) has spread to the RFI list. We are all doomed! 73, Pete N4ZR The World Contest Station Database, updated daily at www.conteststations.com
/archives//html/RFI/2012-01/msg00103.html (10,752 bytes)

266. [RFI] 2.4" OD #31 toroids (score: 1)
Author: Pete Smith N4ZR <n4zr@contesting.com>
Date: Mon, 30 Jan 2012 08:24:56 -0500
Does anyone have a source for these? I can't even find them on the Fair-Rite web site any more. I want to build a couple of super-good common-mode chokes of the ON4UN/K9YC-recommended split type with
/archives//html/RFI/2012-01/msg00120.html (6,868 bytes)

267. Re: [RFI] 2.4" OD #31 toroids (score: 1)
Author: Pete Smith N4ZR <n4zr@contesting.com>
Date: Mon, 30 Jan 2012 09:09:56 -0500
Thanks, Don - that's the right part, all right, but so far Amidon, Arrow and Mouser all don't recognize the number. I'll keep looking. 73, Pete N4ZR The World Contest Station Database, updated daily
/archives//html/RFI/2012-01/msg00121.html (9,794 bytes)

268. Re: [RFI] 2.4" OD #31 toroids (score: 1)
Author: Pete Smith N4ZR <n4zr@contesting.com>
Date: Tue, 31 Jan 2012 06:10:44 -0500
Oops, sorry for not being more clear. Yes, I would use two cores, but only a single one in each choke. Jim's original cookbook used multiple cores in each. 73, Pete N4ZR The World Contest Station Dat
/archives//html/RFI/2012-01/msg00128.html (8,871 bytes)

269. Re: [RFI] 2.4" OD #31 toroids (score: 1)
Author: Pete Smith N4ZR <n4zr@contesting.com>
Date: Tue, 31 Jan 2012 14:32:54 -0500
Jim,I had assumed that I could achieve an impedance of over 5000 ohms with a single #31 core and 14 turns of RG-59, based on Figure 18A of your ferrite tutorial. I see that your later graphs using RG
/archives//html/RFI/2012-01/msg00130.html (9,499 bytes)

270. [RFI] Common mode noise (score: 1)
Author: Pete Smith N4ZR <n4zr@contesting.com>
Date: Wed, 29 Feb 2012 11:58:05 -0500
I just built a bias-tee to inject 12 volts into my receive antenna feedline for a relay box and preamp at the far end. I used what I think is a standard design, with a series 1 mH RF choke and an 0.1
/archives//html/RFI/2012-02/msg00040.html (7,364 bytes)

271. Re: [RFI] Common mode noise (score: 1)
Author: Pete Smith N4ZR <n4zr@contesting.com>
Date: Wed, 29 Feb 2012 16:50:39 -0500
It is definitely a switcher, Dale. I didn't know for sure, but kinda figured that was how they achieved the wide input voltage range on these things. That, plus the weight hi. 73, Pete N4ZR The World
/archives//html/RFI/2012-02/msg00048.html (10,359 bytes)

272. Re: [RFI] Common mode noise (score: 1)
Author: Pete Smith N4ZR <n4zr@contesting.com>
Date: Thu, 01 Mar 2012 06:30:12 -0500
In the meantime, I realized that I have a 3 amp 12v linear supply sitting almost unused in the shack. That's better on a couple of counts. 73, Pete N4ZR The World Contest Station Database, updated da
/archives//html/RFI/2012-03/msg00000.html (7,120 bytes)

273. Re: [RFI] Century Link DSLAM noise (score: 1)
Author: Pete Smith N4ZR <n4zr@contesting.com>
Date: Tue, 20 Mar 2012 07:49:40 -0400
Google is your friend - http://www.centurylink.com/home/?pid=p_113431472 73, Pete N4ZR The World Contest Station Database, updated daily at www.conteststations.com The Reverse Beacon Network at http:
/archives//html/RFI/2012-03/msg00031.html (7,296 bytes)

274. Re: [RFI] 2nd try - URL for the W8WWV RFI writeup (score: 1)
Author: Pete Smith N4ZR <n4zr@contesting.com>
Date: Wed, 04 Apr 2012 07:45:50 -0400
Purely as an experiment, what happens if you write the URL this way? On a number of reflectors I hang out on, this seems to eliminate the truncation. <http://www.seed-solutions.com/gregordy/Amateur%2
/archives//html/RFI/2012-04/msg00003.html (7,812 bytes)

275. Re: [RFI] Is a low pass filter necessary? (score: 1)
Author: Pete Smith N4ZR <n4zr@contesting.com>
Date: Fri, 11 May 2012 08:57:44 -0400
Back in the day, I believe Drake made two - a cheaper one that rolled off between 40 and 50 MHz, and one intended specifically for 6 meters, with a sharp roll-off above the band and below Channel 2.
/archives//html/RFI/2012-05/msg00023.html (10,001 bytes)

276. [RFI] Single-point grounding (score: 1)
Author: Pete Smith N4ZR <n4zr@contesting.com>
Date: Sun, 01 Jul 2012 10:28:56 -0400
I'm not sure exactly where I should post this, but suspect that this group probably has more relevant expertise than most, so please bear with me. In the last year, I have had two expensive episodes.
/archives//html/RFI/2012-07/msg00000.html (7,772 bytes)

277. Re: [RFI] Single-point grounding (score: 1)
Author: Pete Smith N4ZR <n4zr@contesting.com>
Date: Sun, 01 Jul 2012 13:42:15 -0400
Sorry, I guess I should have made this clear - the lightning events in question have been nearby, not direct hits. I disconnect everything at the entry panel, an approach that has weathered one direc
/archives//html/RFI/2012-07/msg00006.html (10,462 bytes)

278. Re: [RFI] Single-point grounding (score: 1)
Author: Pete Smith N4ZR <n4zr@contesting.com>
Date: Sun, 01 Jul 2012 17:12:48 -0400
Sorry all, I inadvertently used a term of art - "entry panel" - by which I really meant the aluminum panel on which all of my coax and control jacks are mounted, set in a 2nd floor double-hung window
/archives//html/RFI/2012-07/msg00010.html (9,162 bytes)

279. Re: [RFI] Single-point grounding (score: 1)
Author: Pete Smith N4ZR <n4zr@contesting.com>
Date: Mon, 02 Jul 2012 09:02:22 -0400
I actually took a third path - the computer with the RS-232 connection is attached to my ground bus no more than an inch from where the transceiver's chassis is connected, and both ground leads are n
/archives//html/RFI/2012-07/msg00020.html (11,484 bytes)

280. Re: [RFI] Lightning Protection (score: 1)
Author: Pete Smith N4ZR <n4zr@contesting.com>
Date: Mon, 02 Jul 2012 15:22:08 -0400
We just had DirecTV installed, and the installer did those loops. I asked him why, and he said they are there for the next technician, when the connector fails - not if - to provide plenty of cable l
/archives//html/RFI/2012-07/msg00035.html (12,794 bytes)

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