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Total 119 documents matching your query.

21. Re: [RFI] Wot the heck!?!?!?!?!?! 40 meters, (score: 1)
Author: Rob Atkinson <ranchorobbo@gmail.com>
Date: Tue, 28 Jun 2016 18:01:10 -0500
Plasma TV sets generate a complex and broad modulated signal that have different components which change in frequency and amplitude when the video on the screen changes. Fast live action like a footb
/archives//html/RFI/2016-06/msg00072.html (8,271 bytes)

22. Re: [RFI] Wot the heck!?!?!?!?!?! 40 meters, (score: 1)
Author: Rob Atkinson <ranchorobbo@gmail.com>
Date: Wed, 29 Jun 2016 18:46:00 -0500
<<<I have suggested that those bothered by plasma televisions make an offer to the owners: if they will donate the television to the officers club, air traffic controllers lounge, or avionics shop at
/archives//html/RFI/2016-06/msg00095.html (8,794 bytes)

23. Re: [RFI] TAC Noise Floor Inquiry (score: 1)
Author: Rob Atkinson <ranchorobbo@gmail.com>
Date: Wed, 6 Jul 2016 08:55:42 -0500
Tom, I endorse participation in the ecfs comment system but it is my perception that the TAC is looking for accurate measurement data taken in units they understand and not "The noise level at my pla
/archives//html/RFI/2016-07/msg00024.html (7,259 bytes)

24. Re: [RFI] TAC Noise Floor Inquiry (score: 1)
Author: Rob Atkinson <ranchorobbo@gmail.com>
Date: Wed, 6 Jul 2016 20:29:31 -0500
Okay Tom FB. I hope ARRL gets hams to act in a way similar to other initiatives. But it is important to note that this isn't only about ham radio. TAC wants input from all users of spectrum. I'm sure
/archives//html/RFI/2016-07/msg00027.html (8,295 bytes)

25. Re: [RFI] FW: Quiet Switching Power Supply?, (score: 1)
Author: Rob Atkinson <ranchorobbo@gmail.com>
Date: Fri, 5 Aug 2016 05:19:01 -0500
Balanced line operators need a pair of identical thermocouple amp meters arranged so as to be easily inserted in the line to measure the current on each side simultaneously. It is probably easier to
/archives//html/RFI/2016-08/msg00024.html (7,780 bytes)

26. Re: [RFI] Balanced-line antennas and couplers (score: 1)
Author: Rob Atkinson <ranchorobbo@gmail.com>
Date: Fri, 5 Aug 2016 11:46:28 -0500
It's a bit tricky because the current range depends on the impedance of the line at the test frequency and where you are in the line. I don't now how to predict what that will be at the insertion poi
/archives//html/RFI/2016-08/msg00028.html (10,645 bytes)

27. Re: [RFI] Balanced-line antennas and couplers (score: 1)
Author: Rob Atkinson <ranchorobbo@gmail.com>
Date: Fri, 5 Aug 2016 12:20:28 -0500
I think I read that paper years ago. Since this is the RFI list and not the parallel line list I don't want to drag this out. That's a paper about trying to use baluns to force a balance on line. A l
/archives//html/RFI/2016-08/msg00031.html (7,780 bytes)

28. Re: [RFI] Balanced-line antennas and couplers (score: 1)
Author: Rob Atkinson <ranchorobbo@gmail.com>
Date: Sun, 7 Aug 2016 17:47:21 -0500
Excellent points. identical toroidal coils as pickups, one on each side and at the same location is an excellent way to go. they can feed a dual trace scope and you can see both phase and amplitude.
/archives//html/RFI/2016-08/msg00041.html (7,853 bytes)

29. [RFI] FCC Noise Floor inquiry update (score: 1)
Author: Rob Atkinson <ranchorobbo@gmail.com>
Date: Mon, 12 Dec 2016 18:00:12 -0600
Tom King of Kintronic has authored an update of the FCC TAC noise floor inquiry for Radio World: http://www.radioworld.com/article/noise-floor-where-do-we-go-from-here/300031 73 Rob K5UJ ____________
/archives//html/RFI/2016-12/msg00047.html (6,575 bytes)

30. [RFI] What happened when the power went off... (score: 1)
Author: Rob Atkinson <ranchorobbo@gmail.com>
Date: Wed, 4 Jan 2017 19:13:25 -0600
...to AM radio and then, what happened when the power came back on: http://www.huffingtonpost.com/fred-lundgren/what-happened-to-am-radio_b_13876742.html Rob K5UJ ____________________________________
/archives//html/RFI/2017-01/msg00007.html (6,633 bytes)

31. Re: [RFI] in the shack rfi found! (score: 1)
Author: Rob Atkinson <ranchorobbo@gmail.com>
Date: Mon, 16 Jan 2017 19:05:30 -0600
In some cases that's known as tunable hum. Probably not here, but what happens may be similar: diodes rectify the 120 v. line directly with no 60 cycle transformer isolating them from the line. Ther
/archives//html/RFI/2017-01/msg00044.html (7,898 bytes)

32. Re: [RFI] FIOS vs DSL (score: 1)
Author: Rob Atkinson <ranchorobbo@gmail.com>
Date: Thu, 23 Feb 2017 16:33:46 -0600
Before you get mixed up with Comcast, read my story: I wanted to leave AT&T DSL and get Comcast (Xfinity) fast fast internet. Same price but a lot faster. The Information Superhighway right? I don't
/archives//html/RFI/2017-02/msg00061.html (9,266 bytes)

33. Re: [RFI] FIOS vs DSL (score: 1)
Author: Rob Atkinson <ranchorobbo@gmail.com>
Date: Thu, 23 Feb 2017 19:17:04 -0600
Complain to whom? Comcast? You think they care? Apparently they don't. There is a thing called ITIL--a.k.a. a ticketing system. My tickets in the comcast ITIL system seemed to get blown off. It's not
/archives//html/RFI/2017-02/msg00063.html (9,119 bytes)

34. Re: [RFI] More on 160 M RFI - significance of hum bands (score: 1)
Author: Rob Atkinson <ranchorobbo@gmail.com>
Date: Wed, 29 Mar 2017 18:41:51 -0500
Sounds to me like a plasma TV. If you were closer you'd hear noise in between the 22 kc spaced barfs. When the picture changes, the highest amplitude blobs change too, going away when the screen goes
/archives//html/RFI/2017-03/msg00098.html (7,438 bytes)

35. [RFI] Summary of action on the current spectrum noise floor (score: 1)
Author: Rob Atkinson <ranchorobbo@gmail.com>
Date: Sat, 8 Jul 2017 05:16:16 -0500
Steve Johnston provides a status quo report on the general RFI milieu. The facts are in to FCC and us waiting for a response. Chairman Pai has been made aware of the problem and awareness of the curr
/archives//html/RFI/2017-07/msg00016.html (6,863 bytes)

36. [RFI] Tom King's comments on current noise floor inquiry and needed steps to lower it (score: 1)
Author: Rob Atkinson <ranchorobbo@gmail.com>
Date: Fri, 14 Jul 2017 05:29:58 -0500
Tom King (Kintronic Labs) writes on the need for quantitative data submissions stemming from ET Docket 16-191 as being necessary. We all know the noise floor has been steadily increasing but getting
/archives//html/RFI/2017-07/msg00026.html (7,100 bytes)

37. [RFI] white noise starting at 3780 and up (score: 1)
Author: Rob Atkinson <ranchorobbo@gmail.com>
Date: Sun, 16 Jul 2017 07:09:12 -0500
Howdy, I've been tolerating something here that is a nuisance for the past few years: Tuning up through 75 meters, at around 3780 or 3790, the band noise suddenly goes up 20 dB and stays there all th
/archives//html/RFI/2017-07/msg00028.html (7,414 bytes)

38. Re: [RFI] white noise starting at 3780 and up (score: 1)
Author: Rob Atkinson <ranchorobbo@gmail.com>
Date: Sun, 16 Jul 2017 12:44:01 -0500
Thanks to everyone who replied. Looks like my problem is indeed VDSL. No CenturyLink around here--interesting they have been named in a number of reports I have received. But seems like most of these
/archives//html/RFI/2017-07/msg00034.html (8,556 bytes)

39. [RFI] death of plasma (score: 1)
Author: Rob Atkinson <ranchorobbo@gmail.com>
Date: Wed, 2 Aug 2017 08:08:22 -0500
https://www.pcmag.com/article2/0,2817,2387377,00.asp best part: "I have some sad news: Plasma is dead. Right now, if you want a new plasma HDTV, your best bet is a Samsung screen manufactured in the
/archives//html/RFI/2017-08/msg00000.html (6,141 bytes)

40. Re: [RFI] death of plasma (score: 1)
Author: Rob Atkinson <ranchorobbo@gmail.com>
Date: Thu, 3 Aug 2017 08:08:18 -0500
Unfortunately, it seems like as soon as one problem starts to fade out like BPL and plasma, more pop up like solar panels and grow lights. Rob K5UJ _______________________________________________ RFI
/archives//html/RFI/2017-08/msg00003.html (7,086 bytes)

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