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Total 81 documents matching your query.

21. Re: [RFI] 160m ARDF / fox hunt antenna (score: 1)
Author: N1BUG <paul@n1bug.com>
Date: Fri, 30 Nov 2012 11:53:41 -0500
Thanks! I just threw one of these together and it works! I can hear the noise in question re-radiating from my 160 vertical while standing 7 or 8 feet away. That's not far, but considering this is re
/archives//html/RFI/2012-11/msg00067.html (8,140 bytes)

22. Re: [RFI] 160m ARDF / fox hunt antenna (score: 1)
Author: N1BUG <paul@n1bug.com>
Date: Fri, 30 Nov 2012 15:35:42 -0500
Well, after a lovely bit of walking... about 6 miles of it... I've narrowed the source of my new RFI down to a small area. It is all residential. The nulls are on the loop are not consistent or predi
/archives//html/RFI/2012-11/msg00069.html (8,883 bytes)

23. Re: [RFI] Telephones and DSL (score: 1)
Author: N1BUG <paul@n1bug.com>
Date: Sun, 09 Dec 2012 19:42:35 -0500
Question about DSL. Can too much ferrite kill the DSL signal or mess up the SNR? Is the DSL signal affected by say a 160 tuned circuit/trap or is it a DC thing and not RF? I'm looking to cure 1 KW mo
/archives//html/RFI/2012-12/msg00026.html (7,684 bytes)

24. Re: [RFI] Telephones and DSL (score: 1)
Author: N1BUG <paul@n1bug.com>
Date: Wed, 12 Dec 2012 17:07:40 -0500
Twisted pair all the way to the user equipment is absolutely unheard of around here. Every customer drop includes a length of parallel conductors, not twisted. These range from 10 or 20 feet to a few
/archives//html/RFI/2012-12/msg00043.html (8,141 bytes)

25. Re: [RFI] Telephones and DSL (score: 1)
Author: N1BUG <paul@n1bug.com>
Date: Wed, 12 Dec 2012 17:15:04 -0500
On 12/12/2012 05:07 PM, N1BUG wrote: Twisted pair all the way to the user equipment is absolutely unheard of around here. Every customer drop includes a length of parallel conductors, not twisted. Th
/archives//html/RFI/2012-12/msg00044.html (8,080 bytes)

26. Re: [RFI] Telephones and DSL (score: 1)
Author: N1BUG <paul@n1bug.com>
Date: Thu, 13 Dec 2012 17:03:41 -0500
I've been experiencing a very similar RFI problem. Roger and I have discussed it. I didn't get quite as far along in determining the source, but have it narrowed down to a small area. Oddly (?), sinc
/archives//html/RFI/2012-12/msg00048.html (9,178 bytes)

27. Re: [RFI] HDTV: Plasma vs LCD (score: 1)
Author: N1BUG <paul@n1bug.com>
Date: Fri, 21 Dec 2012 07:09:31 -0500
I concur. There may be a few quiet ones, but unless you have reports from several sources all indicating the same model TV to be one of those, I would stay clear of them. Or at least make sure you ca
/archives//html/RFI/2012-12/msg00089.html (10,238 bytes)

28. Re: [RFI] HDTV: Plasma vs LCD (score: 1)
Author: N1BUG <paul@n1bug.com>
Date: Fri, 21 Dec 2012 07:13:08 -0500
Regardless of who you operate and where, point your beam at their TV until they dispose of it. If anyone knows of cases where that actually worked, I'm not aware of it. My worst plasma TV produces S7
/archives//html/RFI/2012-12/msg00090.html (8,662 bytes)

29. Re: [RFI] Radar Engineers RFI Analyzers (score: 1)
Author: N1BUG <paul@n1bug.com>
Date: Wed, 26 Dec 2012 10:06:42 -0500
I don't doubt for one second the RE equipment is worth the cost if one can somehow manage it. I sincerely wish I could have that equipment to work with. It would make my life simpler. The situation m
/archives//html/RFI/2012-12/msg00146.html (13,011 bytes)

30. [RFI] Power line noise question for the experts (score: 1)
Author: N1BUG <paul@n1bug.com>
Date: Wed, 26 Dec 2012 16:26:40 -0500
I have successfully located multiple sources of power line noise and the power company has kindly fixed them. At this point 90% of the noise has been eliminated but what remains is still quite bother
/archives//html/RFI/2012-12/msg00155.html (8,670 bytes)

31. Re: [RFI] Power line noise question for the experts (score: 1)
Author: N1BUG <paul@n1bug.com>
Date: Wed, 26 Dec 2012 17:19:16 -0500
Ed, It is one of the DIY "kit" units. However it is the recently released RX3, not the older RX2 or RX1. Under controlled test conditions, this unit picks up a spark at 100+ feet vs. 35 feet for the
/archives//html/RFI/2012-12/msg00157.html (8,096 bytes)

32. Re: [RFI] A reply for the Power line noise experts (score: 1)
Author: N1BUG <paul@n1bug.com>
Date: Thu, 27 Dec 2012 15:03:51 -0500
Thank you Michael. Your advice is greatly appreciated. Following this same procedure which you explained to me several months ago I successfully located numerous sources which have since been fixed.
/archives//html/RFI/2012-12/msg00163.html (11,697 bytes)

33. [RFI] Oscilloscope requirements for power line noise locating (score: 1)
Author: N1BUG <paul@n1bug.com>
Date: Sat, 29 Dec 2012 16:10:09 -0500
I have some more questions. I have been re-reading relevant sections of Loftness' book on using an oscilloscope with a Sadelco (or similar, presumably) field strength meter but it isn't all coming to
/archives//html/RFI/2012-12/msg00169.html (8,373 bytes)

34. Re: [RFI] Damned Amtrak (score: 1)
Author: N1BUG <paul@n1bug.com>
Date: Sat, 29 Dec 2012 20:39:42 -0500
I have the MFJ-1026 but I have never transmitted through it. It lives on the rig's RX antenna input. As Dale has mentioned, the key to these working well is having a noise sense antenna that is as cl
/archives//html/RFI/2012-12/msg00172.html (7,988 bytes)

35. Re: [RFI] Damned Amtrak (score: 1)
Author: N1BUG <paul@n1bug.com>
Date: Sat, 29 Dec 2012 21:02:32 -0500
Stew Perry? Ham or a radio show? 160 meter contest... http://www.kkn.net/stew/ 73, Paul N1BUG _______________________________________________ RFI mailing list RFI@contesting.com http://lists.contesti
/archives//html/RFI/2012-12/msg00174.html (7,206 bytes)

36. Re: [RFI] Oscilloscope requirements for power line noise locating (score: 1)
Author: N1BUG <paul@n1bug.com>
Date: Mon, 31 Dec 2012 09:11:22 -0500
Thanks for the thoughtful reply Frank. I guess my problem is that I still don't know with certainty exactly what the "video out" on these CATV FSMs, level meters, or signal monitors really is. Is it
/archives//html/RFI/2012-12/msg00179.html (11,589 bytes)

37. Re: [RFI] Oscilloscope requirements for power line noise locating (score: 1)
Author: N1BUG <paul@n1bug.com>
Date: Mon, 31 Dec 2012 09:20:05 -0500
Thanks Cortland. The terminology they use is somewhat different than what most of us would use. What they call a field strength meter in the CATV industry is actually a frequency selective voltmeter
/archives//html/RFI/2012-12/msg00180.html (8,870 bytes)

38. Re: [RFI] Ultrasonic Dish (score: 1)
Author: N1BUG <paul@n1bug.com>
Date: Wed, 02 Jan 2013 07:59:44 -0500
I have been working on the "dish problem". It is not as simple as it may seem, if one is looking for optimum performance. Aren't we all? ;-) It is very important to match the shape (depth) of the dis
/archives//html/RFI/2013-01/msg00007.html (12,481 bytes)

39. Re: [RFI] Ultrasonic Dish (score: 1)
Author: N1BUG <paul@n1bug.com>
Date: Wed, 02 Jan 2013 12:57:04 -0500
I have to take issue with this statement as I spent several weeks a couple of years ago building an ultrasonic detector. I too thought that a snow dish would work, however when compared to a real par
/archives//html/RFI/2013-01/msg00014.html (9,899 bytes)

40. Re: [RFI] Ultrasonic Dish (score: 1)
Author: N1BUG <paul@n1bug.com>
Date: Wed, 02 Jan 2013 13:18:09 -0500
On 01/02/2013 12:54 PM, Lee K7TJR wrote: I have had the chance to compare my snow sled dish versus the ARRL dish versus the Radar Engineers dish. There is NO comparison. I was able to get right down
/archives//html/RFI/2013-01/msg00015.html (9,635 bytes)

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