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References: [ +from:W2RU@frontiernet.net: 39 ]

Total 39 documents matching your query.

1. Re: [RFI] DSL surge protection (score: 1)
Author: W2RU - Bud Hippisley <W2RU@frontiernet.net>
Date: Fri, 25 Feb 2005 00:04:03 +0000
Ditto. Four years ago I lost a laptop and most innards of three desktops, a few multi-line phones, etc., from a nearby lightning surge that came in via the phone line. I didn't lose any ham radio gea
/archives//html/RFI/2005-02/msg00083.html (7,705 bytes)

2. Re: [RFI] Fwd: Three One-Day Advanced EMC Public Seminars offered byHenry Ott Consultants (score: 1)
Author: "W2RU - Bud Hippisley" <W2RU@frontiernet.net>
Date: Thu, 14 Jul 2005 15:49:08 -0000
And is author of the 1976 text "Noise Reduction Techniques in Electronic Systems" that many of us used as our RFI/EMI design reference a quarter-century ago. Bud, W2RU ______________________________
/archives//html/RFI/2005-07/msg00018.html (7,359 bytes)

3. Re: [RFI] WHINE on XMIT using IC2100 (score: 1)
Author: "W2RU - Bud Hippisley" <W2RU@frontiernet.net>
Date: Sat, 16 Jul 2005 01:07:08 -0000
Nope. He needs a healthy choke in his +12VDC lead. Find an old filament transformer with some "heft" -- perhaps a 10A winding or so. Put the two ends of the winding in series with his +12VDC lead. L
/archives//html/RFI/2005-07/msg00021.html (7,562 bytes)

4. Re: [RFI] 14028 to 14034 hashbirdietrash (score: 1)
Author: "W2RU - Bud Hippisley" <W2RU@frontiernet.net>
Date: Wed, 27 Jul 2005 23:02:51 -0000
Consider the possibility that what you are hearing is ethernet trash. If you have a PC network in your apartment or your neighbors' apartments; OR If you or anyone near you has a Cable modem or DSL m
/archives//html/RFI/2005-07/msg00031.html (9,119 bytes)

5. [RFI] Pogo (score: 1)
Author: "W2RU - Bud Hippisley" <W2RU@frontiernet.net>
Date: Thu, 28 Jul 2005 01:22:56 -0000
Actually, I think he said, "We has met the enemy, and he is us." _______________________________________________ RFI mailing list RFI@contesting.com http://lists.contesting.com/mailman/listinfo/rfi
/archives//html/RFI/2005-07/msg00033.html (6,792 bytes)

6. Re: [RFI] 14028 to 14034 hashbirdietrash (score: 1)
Author: "W2RU - Bud Hippisley" <W2RU@frontiernet.net>
Date: Thu, 28 Jul 2005 14:06:32 -0000
In my shack, all the ethernet cables are commercially manufactured. My tests indicate that the 14.029 garbage originates from the circuitry in my 8-port switch and/or DSL modem (and in each PC's eth
/archives//html/RFI/2005-07/msg00044.html (9,790 bytes)

7. [RFI] geo888 problem is back (score: 1)
Author: "W2RU - Bud Hippisley" <W2RU@frontiernet.net>
Date: Thu, 28 Jul 2005 15:03:04 -0000
I have received Mail Delivery Subsystem responses from each of my recent postings to the RFI reflector saying: 550 MAILBOX NOT FOUND 550 <geo888@cs.com>... User unknown I thought someone had located
/archives//html/RFI/2005-07/msg00046.html (6,403 bytes)

8. Re: [RFI] Towers/Antennas Near 138kV Transmission Lines (score: 1)
Author: W2RU - Bud Hippisley <W2RU@frontiernet.net>
Date: Tue, 15 Aug 2006 00:27:25 +0000
I can add my own story to Tom's. In my case, I had a high-tension line about a mile south of me at my last QTH, in central NY. I could always find an increase in the noise floor from it. Perhaps some
/archives//html/RFI/2006-08/msg00045.html (8,689 bytes)

9. Re: [RFI] Home networking birdies (score: 1)
Author: W2RU - Bud Hippisley <W2RU@frontiernet.net>
Date: Sun, 17 Sep 2006 22:56:20 +0000
Yep. Get the biggest, meanest type 31 or 43 ferrites you can find / afford and push as many turns of your cat5 cable through one at *each end* of *each cable*. You may need to double or triple the le
/archives//html/RFI/2006-09/msg00016.html (8,124 bytes)

10. Re: [RFI] IN-band Filters (score: 1)
Author: W2RU - Bud Hippisley <W2RU@frontiernet.net>
Date: Tue, 07 Nov 2006 23:19:13 +0000
That was tough enough *before*, but if the FCC continues on its present course, it'll be even tougher next Field Day. You're going to want to operate CW up through at least 3600 kHz. But you may want
/archives//html/RFI/2006-11/msg00016.html (7,701 bytes)

11. Re: [RFI] RFI from street lights - finding source? (score: 1)
Author: "W2RU - Bud Hippisley" <W2RU@frontiernet.net>
Date: Sat, 13 Oct 2007 09:41:36 -0400
For over a year, I've been plagued by cyclical noise bursts on 160/80M of about 30sec duration repeating every 2 minutes or so I've been pondering how to go about locating the source. Does it seem re
/archives//html/RFI/2007-10/msg00043.html (7,968 bytes)

12. Re: [RFI] How cost effective -- and safe -- are CFL bulbs anyway? (score: 1)
Author: "W2RU - Bud Hippisley" <W2RU@frontiernet.net>
Date: Thu, 18 Oct 2007 22:28:49 -0400
My kitchen ceiling utilizes five 75-watt indoor "floods" and my radio room uses two, also. A year or two ago I bought two low-wattage replacement fluorescent floods for the ones in my radio room, sin
/archives//html/RFI/2007-10/msg00080.html (9,235 bytes)

13. Re: [RFI] 80M mystery noise (score: 1)
Author: "W2RU - Bud Hippisley" <W2RU@frontiernet.net>
Date: Tue, 13 Nov 2007 18:02:17 -0500
Pete -- I listened to your audio recording -- I have one of those in *my* house, too! I haven't found it yet. At first I thought it was my Xerox copier, but pulling the plug on that didn't seem to do
/archives//html/RFI/2007-11/msg00043.html (7,633 bytes)

14. Re: [RFI] 80M mystery noise (score: 1)
Author: "W2RU - Bud Hippisley" <W2RU@frontiernet.net>
Date: Tue, 13 Nov 2007 18:07:29 -0500
I hadn't seen Tim's reply [below] to N4ZR's query when I sent mine out. I hardly have any neighbors, much less security systems, near me but there's certainly plenty of switching power supplies just
/archives//html/RFI/2007-11/msg00044.html (7,667 bytes)

15. Re: [RFI] Wired vs Wireless Routers for RFI (score: 1)
Author: "W2RU - Bud Hippisley" <W2RU@frontiernet.net>
Date: Wed, 9 Jan 2008 20:51:31 -0500
14.023 (multiple carriers around that frequency) is the big one.... Can someone share with me the expected birdie frequencies for these routers _______________________________________________ RFI mai
/archives//html/RFI/2008-01/msg00023.html (8,560 bytes)

16. Re: [RFI] RFI Located but not found (score: 1)
Author: "W2RU - Bud Hippisley" <W2RU@frontiernet.net>
Date: Fri, 1 Feb 2008 06:33:32 -0500
I recently tracked down the general location of an RFI problem I've had for months.... It's a pulse noise that repeats every 0.533 seconds. ** Don't overlook the possibility that it's the control for
/archives//html/RFI/2008-02/msg00000.html (6,147 bytes)

17. Re: [RFI] 6M Getting into TV Channel 3 (score: 1)
Author: "W2RU - Bud Hippisley" <W2RU@frontiernet.net>
Date: Thu, 3 Jul 2008 10:03:53 -0400
I raised my delta loop *from* a feedpoint of 6' above the ground *to* 15' and now it is getting into the TV (all channels)....Is there a filter for the TV that would take out 6M? Simpler / cheaper so
/archives//html/RFI/2008-07/msg00001.html (7,507 bytes)

18. Re: [RFI] Kenwood TM-D700 (score: 1)
Author: W2RU - Bud Hippisley <W2RU@frontiernet.net>
Date: Wed, 29 Oct 2008 21:21:20 -0400
It's clear from the original description of the TM-D700 problem that it's *not* alternator whine. However, with respect to alternator whine: I agree with the earlier comment that most of the easily a
/archives//html/RFI/2008-10/msg00086.html (9,145 bytes)

19. Re: [RFI] Resolution of RFI into the receiver (score: 1)
Author: W2RU - Bud Hippisley <W2RU@frontiernet.net>
Date: Fri, 12 Dec 2008 07:44:41 -0500
This is a more general problem that is commonly realized, and it can happen with many different station configurations whenever the transceiver has a separate RX ANTenna input in use. The problem is
/archives//html/RFI/2008-12/msg00012.html (8,724 bytes)

20. Re: [RFI] RFI Susceptibility of DTV? (score: 1)
Author: W2RU - Bud Hippisley <W2RU@frontiernet.net>
Date: Fri, 23 Jan 2009 18:14:51 -0500
I can't agree with this. Here in the central Adirondacks of upstate NY, during a sunspot minimum I get very useable analog pictures from Syracuse, Utica, and Watertown on channels 2, 3, 5, 7, 9, and
/archives//html/RFI/2009-01/msg00168.html (11,156 bytes)

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