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Total 81 documents matching your query.

1. [RFI] Introduction - power line noise (score: 1)
Author: N1BUG <paul@n1bug.com>
Date: Sun, 24 Jun 2012 09:09:31 -0400
I just joined the group and pulled an all nighter digging through the archives. I've got a number of questions about apparatus for finding power line noise which I will get to shortly. For sake of ma
/archives//html/RFI/2012-06/msg00031.html (7,279 bytes)

2. [RFI] My MFJ-856 mods (score: 1)
Author: N1BUG <paul@n1bug.com>
Date: Sun, 24 Jun 2012 09:24:09 -0400
In case it may be of interest... I recently bought an MFJ-856 and found it desirable to make some modifications. It was completely swamped in some of my strong noise areas, making it impossible to na
/archives//html/RFI/2012-06/msg00032.html (6,601 bytes)

3. Re: [RFI] Introduction - power line noise (score: 1)
Author: N1BUG <paul@n1bug.com>
Date: Sun, 24 Jun 2012 18:56:33 -0400
Thanks. At present I doubt I will need to use HF to track this down but we will see how it goes. I'm finding considerable ambiguity when tracking at 135 MHz with the MFJ-856 but I think it would be b
/archives//html/RFI/2012-06/msg00036.html (10,015 bytes)

4. [RFI] Low cost UHF noise finder? (score: 1)
Author: N1BUG <paul@n1bug.com>
Date: Mon, 25 Jun 2012 06:57:35 -0400
I've been looking around (for days actually) trying to find an inexpensive UHF AM receiver I can build or buy to augment my power line tracking capabilities. It has to be very inexpensive and fully p
/archives//html/RFI/2012-06/msg00044.html (6,925 bytes)

5. Re: [RFI] Introduction - power line noise (score: 1)
Author: N1BUG <paul@n1bug.com>
Date: Mon, 25 Jun 2012 07:14:18 -0400
Interesting, Kurt. Oddly this is happening even on weaker noises that only move the MFJ-856 meter to half scale or less. I was fully expecting to find noise radiating from ground and guy wires! But s
/archives//html/RFI/2012-06/msg00045.html (8,265 bytes)

6. Re: [RFI] Introduction - power line noise (score: 1)
Author: N1BUG <paul@n1bug.com>
Date: Tue, 26 Jun 2012 19:24:15 -0400
I want to thank everyone who has offered support and information on my problem. I do understand a lot of RFI originates from homes and that some of it can at first appear to be from power lines. I ha
/archives//html/RFI/2012-06/msg00066.html (9,716 bytes)

7. [RFI] Icom R5 / R6 AM frequency range? (score: 1)
Author: N1BUG <paul@n1bug.com>
Date: Wed, 27 Jun 2012 16:00:14 -0400
The specs for the Icom R5 and R6 receivers only list AM sensitivity in specific bands to 330 MHz. Does anyone have one of these? I would like to verify that it will receive in AM mode above that. I'v
/archives//html/RFI/2012-06/msg00070.html (6,596 bytes)

8. Re: [RFI] Icom R5 / R6 AM frequency range? (score: 1)
Author: N1BUG <paul@n1bug.com>
Date: Wed, 27 Jun 2012 20:23:00 -0400
If I read the specifications correctly, the TH-F6A receives AM all the way up to 1300 MHz. It receives SSB and CW up to 470 MHz. A very interesting radio. I will keep my eyes open for a good used one
/archives//html/RFI/2012-06/msg00077.html (7,670 bytes)

9. [RFI] MFJ-856 oddity (score: 1)
Author: N1BUG <paul@n1bug.com>
Date: Mon, 06 Aug 2012 07:06:45 -0400
I'm still pursuing my power line noise. I have a few questions, starting with this one: A while ago I modified an MFJ-856 power line noise sniffer. The mods consisted of adding a T match to the drive
/archives//html/RFI/2012-08/msg00025.html (7,200 bytes)

10. Re: [RFI] MFJ-856 oddity (score: 1)
Author: N1BUG <paul@n1bug.com>
Date: Tue, 07 Aug 2012 15:41:50 -0400
Hi Dave, I know you were joking, but actually I could try that and see if the S meter reading changes. It might give some clue... 73, Paul _______________________________________________ RFI mailing
/archives//html/RFI/2012-08/msg00030.html (7,462 bytes)

11. Re: [RFI] MFJ-856 oddity (score: 1)
Author: N1BUG <paul@n1bug.com>
Date: Tue, 07 Aug 2012 15:52:12 -0400
Thanks Tom, I've been thinking about that. I'm trying to figure out what is the best common mode choke I can do without starting all over on the mods. I have about 7.5 inches of RG-142B/U coax expose
/archives//html/RFI/2012-08/msg00031.html (7,528 bytes)

12. Re: [RFI] MFJ-856 oddity (score: 1)
Author: N1BUG <paul@n1bug.com>
Date: Tue, 07 Aug 2012 16:24:31 -0400
Thanks Michael, I appreciate your comments. This situation with the attenuator having no affect in a few areas is something I want to understand because I hate things I don't understand! Most of the
/archives//html/RFI/2012-08/msg00032.html (10,404 bytes)

13. Re: [RFI] MFJ-856 oddity (score: 1)
Author: N1BUG <paul@n1bug.com>
Date: Wed, 15 Aug 2012 09:51:17 -0400
Charlie, My total attenuation (series connected) is 50 dB. There are places even that is not enough - where the meter will sit pegged throughout a ~400 foot area. These are *not* areas where the atte
/archives//html/RFI/2012-08/msg00077.html (11,099 bytes)

14. Re: [RFI] RFI Digest, Vol 115, Issue 23.....identification or rfi (score: 1)
Author: N1BUG <paul@n1bug.com>
Date: Sun, 26 Aug 2012 11:32:07 -0400
I would like to see the photo of an ultrasonic RFI locator with 19" dish. I would also like to know where you got the dish. I have a 12" one and have thought about trying to go larger. The problem is
/archives//html/RFI/2012-08/msg00107.html (8,040 bytes)

15. [RFI] Line noise update (score: 1)
Author: N1BUG <paul@n1bug.com>
Date: Tue, 09 Oct 2012 08:16:15 -0400
Several months ago I posted about my severe power line noise. I honestly wasn't optimistic about a cure and had a very unfavorable opinion of the utility involved (partly due to past experience with
/archives//html/RFI/2012-10/msg00010.html (11,350 bytes)

16. Re: [RFI] Line noise update (score: 1)
Author: N1BUG <paul@n1bug.com>
Date: Tue, 09 Oct 2012 17:34:48 -0400
On 10/09/2012 08:59 AM, dalej wrote: I have one question regarding your Alinco receiver. How is it for ease of use? Do you need the manual along to operate it. The reason I ask is I already have an A
/archives//html/RFI/2012-10/msg00017.html (8,890 bytes)

17. Re: [RFI] Line noise update (score: 1)
Author: N1BUG <paul@n1bug.com>
Date: Tue, 09 Oct 2012 17:58:36 -0400
On 10/09/2012 11:41 AM, Jim Brown wrote: Great news on your progress, Paul. Ours is such a noisy world that it's become really common for our noise levels to be the combination of many sources. Now t
/archives//html/RFI/2012-10/msg00019.html (9,477 bytes)

18. Re: [RFI] rfi problem (score: 1)
Author: N1BUG <paul@n1bug.com>
Date: Fri, 02 Nov 2012 08:43:09 -0400
Back in the late 1980s, not long after cable came to town, we had massive problems with crud all over VHF/UHF including a whopping carrier on 145.25. In this case, it turned out to be poor installati
/archives//html/RFI/2012-11/msg00011.html (8,663 bytes)

19. Re: [RFI] RFI to new photoelectric smoke detector (score: 1)
Author: N1BUG <paul@n1bug.com>
Date: Tue, 06 Nov 2012 07:28:23 -0500
Were weather conditions different during the contest? I had severe problems with RF from 160m knocking my DSL connection off-line until I installed a filter. Now it is fine except when it rains. The
/archives//html/RFI/2012-11/msg00019.html (9,184 bytes)

20. [RFI] 160m ARDF / fox hunt antenna (score: 1)
Author: N1BUG <paul@n1bug.com>
Date: Fri, 30 Nov 2012 08:26:55 -0500
I need a hand held ARDF / fox hunting antenna for 160 meters. It has to be small enough to be easily hand carried (preferably for long periods), cheap, hopefully something I can throw together from a
/archives//html/RFI/2012-11/msg00063.html (7,184 bytes)

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