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Total 336 documents matching your query.

1. [RFI] Quiet Monitor on sale again (score: 1)
Author: (Pete Smith)
Date: Tue, 07 Jan 2003 01:56:35 -0500
Let me add another option -- the price of LCD flat panel displays is finally starting to come down. has the MAG LT565 15" (practically the same viewing area as a 17" CRT) for $199
/archives//html/RFI/2003-01/msg00009.html (7,235 bytes)

2. [RFI] Re: Quiet Monitor on sale again (score: 1)
Author: (Pete Smith)
Date: Tue, 07 Jan 2003 15:14:24 -0500
The Corcom/Qualtek rfi-filtered AC power inlets are a good cheap fix (or a help, anyhow) for the power supply problem -- check out Mouser 562-848/03/7, for <$5. The PS in an ATX supply continues to r
/archives//html/RFI/2003-01/msg00013.html (7,579 bytes)

3. [RFI] QST article on powerline noise receiver (score: 1)
Author: (Pete Smith)
Date: Tue, 03 Dec 2002 14:18:01 -0500
I've spent a fruitless half hour trying to find this article in the on-line index -- I know it appeared within the last several years. It described a little non-superhet receiver tuned to the aircraf
/archives//html/RFI/2002-12/msg00020.html (7,057 bytes)

4. [RFI] QST article on powerline noise receiver (score: 1)
Author: (Pete Smith)
Date: Tue, 03 Dec 2002 14:59:15 -0500
That's the one -- wonder why I didn't turn it up. Maybe I searched on power line instead of powerline. Thanks, Jim! 73, Pete N4ZR Sometimes a tower is just a tower
/archives//html/RFI/2002-12/msg00022.html (7,162 bytes)

5. [RFI] DFing progress (score: 1)
Author: (Pete Smith)
Date: Tue, 17 Dec 2002 19:55:29 -0500
I wented to let everyone know that I've succeeded in mating the Moxon rectangle antenna from the March 2001 RFI receiver project to my Icom IC-Q7A handitalky. I cobbled up the antenna out of aluminum
/archives//html/RFI/2002-12/msg00037.html (7,128 bytes)

6. [RFI] RR crossing lights (score: 1)
Author: (Pete Smith)
Date: Fri, 20 Dec 2002 14:17:21 -0500
I'm not sure what the source was, but recently the local highway people had installed a portable light unit at a diversion around some construction. The light unit had some sort of wireless sensor th
/archives//html/RFI/2002-12/msg00048.html (7,901 bytes)

7. [RFI] Mu metal source (score: 1)
Author: (Pete Smith)
Date: Sat, 21 Dec 2002 09:51:17 -0500
Does anyone know of a supplier who sells .2-.4mm thick mu metal sheet in small pieces -- say 30x30 cm? Purpose is to shield against magnetic emissions from a CRT that are getting into a high-impedanc
/archives//html/RFI/2002-12/msg00049.html (6,704 bytes)

8. [RFI] Mu metal source..PS.. (score: 1)
Author: (Pete Smith)
Date: Sat, 21 Dec 2002 11:25:46 -0500
Thanks, Mike -- unfortunately these folks all seem to be either large-quantity or minimum order suppliers. for example, the shortest sheets of mu-80 that advanced magnetics offers is 120 inches... 73
/archives//html/RFI/2002-12/msg00052.html (6,769 bytes)

9. [RFI] Re: alarm system RFI (score: 1)
Author: (Pete Smith)
Date: Thu, 07 Nov 2002 01:47:33 -0500
For what it's worth department... I experience occasional mild RFI from the IR sensors on my garage doors. When sniffing with a portable HF receiver, I found the loudest noise was coming from the tra
/archives//html/RFI/2002-11/msg00014.html (8,205 bytes)

10. [RFI] Shielding (score: 1)
Author: (Pete Smith)
Date: Thu, 07 Nov 2002 08:59:25 -0500
After 48 years as a ham, there are still many big holes in my technical understanding of things. One of the biggest is shielding -- elementary questions like: Does a shield box for RF need to be grou
/archives//html/RFI/2002-11/msg00015.html (7,540 bytes)

11. [RFI] Monitor interferes with transmit audio (score: 1)
Author: (Pete Smith)
Date: Fri, 08 Nov 2002 08:24:05 -0500
Here's the problem that prompted me to feel so deficient in shielding knowledge. Unfortunately, the maker of the DXD doesn't have any ideas, so I'm turning to a broader knowledge base... My station u
/archives//html/RFI/2002-11/msg00023.html (8,980 bytes)

12. [RFI] Noise Canceller vs DSP filter (score: 1)
Author: (Pete Smith)
Date: Fri, 18 Oct 2002 16:43:16 -0400
I have had varying degrees of luck with the DSP in my Mark 5, night-to-night, and experimented with an outboard audio DSP box on my previous radio but sent it back. The noise canceller depends on the
/archives//html/RFI/2002-10/msg00020.html (7,974 bytes)

13. [RFI] Noise gone but don't know why (score: 1)
Author: (Pete Smith)
Date: Sun, 07 Jul 2002 05:33:30 -0400
Amen. The loudest "power-line" noise I have found originated in a lightning arrestor on a pole in the corner of my yard. Seems that it was bolted to the pole with two lag screws. A woodpecker had und
/archives//html/RFI/2002-07/msg00004.html (8,553 bytes)

14. [RFI] Locating Noise - Radiated or Conducted and thenradiated (score: 1)
Author: (Pete Smith)
Date: Tue, 04 Jun 2002 14:54:29 -0400
The MFJ unit is very well regarded by a friend who is an RFI pro, though he says it could use a directional antenna and an attenuator (now it uses a telescoping whip for both). You need to be reasona
/archives//html/RFI/2002-06/msg00015.html (8,534 bytes)

15. [RFI] Audio isolation transformer and RFI (score: 1)
Author: (Pete Smith)
Date: Fri, 21 Jun 2002 15:57:49 -0400
I have cobbled together a patch panel to bring the sound-card connections of my two shack computers to a more reachable place at the back of my desk (the computers are under the desk. Unfortunately,
/archives//html/RFI/2002-06/msg00018.html (7,849 bytes)

16. [RFI] toroid color codes (score: 1)
Author: (Pete Smith)
Date: Mon, 06 May 2002 08:26:07 -0400
I'm looking to pick up an assortment of HF toroids at Dayton. Does anyone know how reliable the standard color codes are for unbranded stuff like I'm apt to find there? I found a table on this reflec
/archives//html/RFI/2002-05/msg00003.html (6,745 bytes)

17. [RFI] rfi to computer via sound card (score: 1)
Author: (Pete Smith)
Date: Thu, 30 May 2002 16:39:47 -0400
I'm setting up to record contests using an SB-16 sound card and Recall Pro software. At the moment I'm dealing with a severe RFI problem, which crashes the Recall software a few seconds into every tr
/archives//html/RFI/2002-05/msg00012.html (7,278 bytes)

18. [RFI] Flat screen monitors easy on RFI? (score: 1)
Author: (Pete Smith)
Date: Thu, 18 Apr 2002 17:47:37 -0400
Flat screen or LCD? I can testify that my snazzy Sony Multiscan E100 flat screen CRT monitor is much the noisiest monitor I have ever had in this hamshack. I don't think I've ever read a report of HF
/archives//html/RFI/2002-04/msg00018.html (7,076 bytes)

19. [RFI] A success story (score: 1)
Author: (Pete Smith)
Date: Sat, 27 Apr 2002 08:19:47 -0400
I thought people might want to read a positive power line RFI story for a change. as long-time readers know, I have been rassling with the power company for 4 years now. 2 months ago a new engineer w
/archives//html/RFI/2002-04/msg00020.html (7,427 bytes)

20. [RFI] Power Line RFI -- Slack Spans (score: 1)
Author: (Pete Smith)
Date: Sat, 02 Mar 2002 07:56:09 -0500
I picked up the following from a power company engineer who has been working on my RFI problems. Any old power line workers out there, forgive me if I do not get the terminology 100 percent, but I th
/archives//html/RFI/2002-03/msg00009.html (7,521 bytes)

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