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301. [RFI] great RFI video (score: 1)
Author: Warren Zimmer via RFI <rfi@contesting.com>
Date: Sat, 11 Jan 2020 14:01:25 -0600
https://youtu.be/QQzmMOJvFfc _______________________________________________ RFI mailing list RFI@contesting.com http://lists.contesting.com/mailman/listinfo/rfi
/archives//html/RFI/2020-01/msg00074.html (6,398 bytes)

302. Re: [RFI] Guidance on finding noise? (score: 1)
Author: AA5CT via RFI <rfi@contesting.com>
Date: Sun, 12 Jan 2020 03:16:53 +0000 (UTC)
Kenny, Did you whip out your VHF and UHF beams with an AM rx mode receiver once close to the suspect poles? That is the only way, and it is a conclusive way, that I have found to ID noisy power poles
/archives//html/RFI/2020-01/msg00077.html (9,715 bytes)

303. Re: [RFI] Guidance on finding noise? (score: 1)
Author: AA5CT via RFI <rfi@contesting.com>
Date: Sun, 12 Jan 2020 13:33:10 +0000 (UTC)
Kenny, I have gone after and found many 'sources' on 160, and the last step involved resolving to the an actual specific power pole using VHF and UHF. I have not had one case yet where the pole was a
/archives//html/RFI/2020-01/msg00084.html (10,501 bytes)

304. Re: [RFI] Guidance on finding noise? (score: 1)
Author: AA5CT via RFI <rfi@contesting.com>
Date: Sun, 12 Jan 2020 21:18:07 +0000 (UTC)
This may be a case where the marine DF receiver succeeds, and a simple DF loop fails. With the simple DF loop one is unable, repeat, *unable* to resolve the __180 degree ambiguity__ that the 'null' o
/archives//html/RFI/2020-01/msg00092.html (11,598 bytes)

305. Re: [RFI] Guidance on finding noise? (score: 1)
Author: AA5CT via RFI <rfi@contesting.com>
Date: Mon, 13 Jan 2020 11:51:03 +0000 (UTC)
Scott, The marine DF receiver (with the "sense" antenna to give a cardioid pattern) in use by myself (and a few others) covers the old "marine" band as shown on the scale as 1.6 MHz through 4.0 MHz a
/archives//html/RFI/2020-01/msg00096.html (15,556 bytes)

306. Re: [RFI] Guidance on finding noise? (score: 1)
Author: "EDWARDS, EDDIE J via RFI" <rfi@contesting.com>
Date: Tue, 14 Jan 2020 15:23:36 +0000
Alan, Question when disconnecting all antennas: Disconnect at the antenna feed point? All antennas or just the ones for bands affected? May be a challenge for those with towers who don't climb it the
/archives//html/RFI/2020-01/msg00102.html (9,932 bytes)

307. Re: [RFI] Choke questions (score: 1)
Author: "EDWARDS, EDDIE J via RFI" <rfi@contesting.com>
Date: Tue, 21 Jan 2020 17:32:25 +0000
Andy, Use coaxial cable when making RF chokes for antenna systems. Use THHN (#12 stranded) when making an RF choke for AC power cabling--you can twist the wires making it twisted cable. You can use s
/archives//html/RFI/2020-01/msg00107.html (8,544 bytes)

308. Re: [RFI] Choke questions (score: 1)
Author: k9yt--- via RFI <rfi@contesting.com>
Date: Tue, 21 Jan 2020 21:06:29 +0000 (UTC)
Don't see a specific reference to failure. 72/73, San K9YT Creep and Cold Flow http://www.rjchase.com/fep_handbook.pdf Wire Insulation Selection Guidelines https://nepp.nasa.gov/npsl/Wire/insulation_
/archives//html/RFI/2020-01/msg00111.html (14,581 bytes)

309. Re: [RFI] W1RFI (score: 1)
Author: nm8rmedic via RFI <rfi@contesting.com>
Date: Thu, 23 Jan 2020 11:29:50 -0500
Ed,Perhaps you didn't catch my earlier message, below.  The article has been published.  Can you email me please?Tnx,ScottNM8RSent via the Samsung Galaxy S8+, an AT&T 5G Evolution capable smartphone
/archives//html/RFI/2020-01/msg00129.html (7,654 bytes)

310. Re: [RFI] How to proceed? (score: 1)
Author: AA5CT via RFI <rfi@contesting.com>
Date: Mon, 27 Jan 2020 03:25:06 +0000 (UTC)
re: "Any suggestions about how I might go about tracking down the source or sources?" Pete, DFing power line noise on 160 (and 80) represents more of a challenge than the other bands, in my experienc
/archives//html/RFI/2020-01/msg00140.html (10,294 bytes)

311. Re: [RFI] How to proceed? (score: 1)
Author: AA5CT via RFI <rfi@contesting.com>
Date: Mon, 27 Jan 2020 03:51:09 +0000 (UTC)
Pete, I should mention I tracked down another 'dull thud' kind of line-rate locked broadband noise on 160 meters (and slightly above 160) to a residence about 3900 feet to my NNE ... suspect this is
/archives//html/RFI/2020-01/msg00142.html (9,517 bytes)

312. Re: [RFI] How to proceed? (score: 1)
Author: AA5CT via RFI <rfi@contesting.com>
Date: Mon, 27 Jan 2020 03:59:35 +0000 (UTC)
re: "And it might not be power line noise! Most noise today is NOT." SEE my next post to Pete; When I 'run these things to ground', I can make these statements, and I have chased a number of these wi
/archives//html/RFI/2020-01/msg00143.html (8,630 bytes)

313. Re: [RFI] How to proceed? (score: 1)
Author: AA5CT via RFI <rfi@contesting.com>
Date: Mon, 27 Jan 2020 16:44:16 +0000 (UTC)
Scott, I initially did the "feed it through the local repeater" trick to a hand-held at the site where I had located a noise source. This was back +15 years or so and boosted my confidence in my low
/archives//html/RFI/2020-01/msg00149.html (13,742 bytes)

314. Re: [RFI] How to proceed? (score: 1)
Author: AA5CT via RFI <rfi@contesting.com>
Date: Mon, 27 Jan 2020 22:17:05 +0000 (UTC)
re: "And it might not be power line noise! " This represents a trivial situation, if one has the gear to track down, to DF such 'sources' they can be located. It used to be the byword here - TRACK IT
/archives//html/RFI/2020-01/msg00153.html (11,116 bytes)

315. Re: [RFI] AM Broadcast Intermod? (score: 1)
Author: AA5CT via RFI <rfi@contesting.com>
Date: Tue, 28 Jan 2020 17:32:51 +0000 (UTC)
Pete, What does 10 dB of attenuation do? Does it seem to add more than 10 dB of attenuation to the offending intermod? If so, the problem resides in the front end of the receiver. 73, de AA5CT Jim On
/archives//html/RFI/2020-01/msg00157.html (8,920 bytes)

316. Re: [RFI] SDR software that displays actual waveform of received signal???? (score: 1)
Author: "EDWARDS, EDDIE J via RFI" <rfi@contesting.com>
Date: Mon, 3 Feb 2020 14:21:42 +0000
Don, I just purchased an SDRPlay unit, and on their web site they have free downloads of SDR UNO. Just did the download here at work, so I'm sure you'll be able to as well. https://www.sdrplay.com/do
/archives//html/RFI/2020-02/msg00001.html (8,603 bytes)

317. Re: [RFI] SDR software that displays actual waveform of received signal???? (score: 1)
Author: "EDWARDS, EDDIE J via RFI" <rfi@contesting.com>
Date: Mon, 3 Feb 2020 14:48:00 +0000
Just found this SDR which I hadn't heard of before. Has anyone on this group played with this unit? https://www.dxengineering.com/parts/dxp-dx-patrolmk4?seid=dxese1&gclid=EAIaIQobChMIwIfM_Me15wIV2iCt
/archives//html/RFI/2020-02/msg00002.html (8,887 bytes)

318. Re: [RFI] SDR software that displays actual waveform of received signal???? (score: 1)
Author: AA5CT via RFI <rfi@contesting.com>
Date: Mon, 3 Feb 2020 15:31:14 +0000 (UTC)
Don, Audio "demodulated" (sent through the PC audio chain) could be recorded using Audacity then "edit" (view) the waveform? There used to be a freeware "scope" software put out by a few firms a deca
/archives//html/RFI/2020-02/msg00006.html (10,724 bytes)

319. Re: [RFI] SDR software that displays actual waveform of received signal???? (score: 1)
Author: AA5CT via RFI <rfi@contesting.com>
Date: Mon, 3 Feb 2020 15:43:50 +0000 (UTC)
Don, There is also this; I went through a few of these a couple years back but can't make any recommendations from memory: https://windowsreport.com/oscilloscope-software-pc-laptop/ de AA5CT . . On M
/archives//html/RFI/2020-02/msg00007.html (10,374 bytes)

320. [RFI] RFI from solar system and inverters (score: 1)
Author: Bill via RFI <rfi@contesting.com>
Date: Tue, 4 Feb 2020 11:10:27 +0000 (UTC)
Considering a parcel of land  whioh will require an extensive solar panel system and of course an inverter. This is my first foray into solar and looking for info on which brand to look for, which on
/archives//html/RFI/2020-02/msg00012.html (6,773 bytes)

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