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241. Re: [RFI] Long distance grounding (score: 1): Author: "Tom Rauch" <w8ji@contesting.com>; Date: Mon, 11 Jun 2007 21:27:35 -0400; Dave, Why would you need an RF ground? Are you feeding a long wire antenna against the ground in the shack? Or perhaps you have an end-fed Zepp or Windom? As Martin just said....if the feedlines are; /archives//html/RFI/2007-06/msg00011.html (7,927 bytes)
242. Re: [RFI] Long distance grounding (score: 1): Author: "Tom Rauch" <w8ji@contesting.com>; Date: Tue, 12 Jun 2007 07:47:51 -0400; While all that is true, once you are inside the house or radio room it is generally too late to do anything. There should be one common point at the entrance to any equipment cluster that bonds powe; /archives//html/RFI/2007-06/msg00014.html (8,924 bytes)
243. Re: [RFI] N6CW TVI (score: 1): Author: "Tom Rauch" <w8ji@contesting.com>; Date: Thu, 21 Jun 2007 21:39:44 -0400; Terry, Toroids in TVI applications are largely, IMO, a big waste of time and money. There are much more effective ways to accomplish the same thing, and at the same time improve lightning immunity. T; /archives//html/RFI/2007-06/msg00025.html (10,151 bytes)
244. Re: [RFI] N6CW TVI (score: 1): Author: "Tom Rauch" <w8ji@contesting.com>; Date: Fri, 22 Jun 2007 08:57:38 -0400; Hi Dave, You may have missed this, but he operates six meters and has channel two RFI. Short of a helical resonantor or cavity or other very loosely coupled very high Q filters, there isn't anything; /archives//html/RFI/2007-06/msg00027.html (8,080 bytes)
245. Re: [RFI] N6CW TVI (score: 1): Author: "Tom Rauch" <w8ji@contesting.com>; Date: Fri, 22 Jun 2007 15:25:57 -0400; The problem in the near field of a transmitter is virtually never reradiation. The very strong field intensity from the transmitter dominates any conducted emissions that are reradiated. The problem; /archives//html/RFI/2007-06/msg00031.html (11,571 bytes)
246. Re: [RFI] Radio "Grounding" (score: 1): Author: "Tom Rauch" <w8ji@contesting.com>; Date: Thu, 9 Aug 2007 20:19:31 -0400; Why would you want to do that and what would you gain? Isn't the radio dc input properly bypassed? At great risk of starting a long thread, I'm going to disagree with this. The battery negative term; /archives//html/RFI/2007-08/msg00025.html (12,211 bytes)
247. Re: [RFI] RFI into house from FT-2K (score: 1): Author: "Tom Rauch" <w8ji@contesting.com>; Date: Mon, 10 Sep 2007 21:04:54 -0400; Bob, First let me say Howard has an excellent suggestion. Swap the radio out very carefully with NO other changes and see what happens. Now let me interject a few things that deal with some common H; /archives//html/RFI/2007-09/msg00016.html (10,285 bytes)
248. Re: [RFI] TNX. (score: 1): Author: "Tom Rauch" <w8ji@contesting.com>; Date: Tue, 11 Sep 2007 12:07:32 -0400; Bob, It's highly doubtful it is the radio. About a snowball's chance in Hades. Standard occurance that really doesn't tell you a thing. More power = more unwanted RF levels If you do that and it chan; /archives//html/RFI/2007-09/msg00018.html (7,748 bytes)
249. Re: [RFI] Meter Sensitivity to Surges (score: 1): Author: "Tom Rauch" <w8ji@contesting.com>; Date: Thu, 27 Sep 2007 07:07:39 -0400; EMP worries are overblown if you use reasonable care in cabling and grounding. My tall tower (318 foot) gets hit about a dozen times a year or more. Smaller towers (~200 ft ) get hit once in a while; /archives//html/RFI/2007-09/msg00025.html (8,373 bytes)
250. Re: [RFI] Meter Sensitivity to Surges (score: 1): Author: "Tom Rauch" <w8ji@contesting.com>; Date: Fri, 28 Sep 2007 06:46:45 -0400; No, there wasn't. I was there and it was nonsense. This fellow was paid to talk about buying a big capacitor from Newark, not something room size, and sending a destructive pulse for 25 miles. The s; /archives//html/RFI/2007-09/msg00030.html (13,566 bytes)
251. Re: [RFI] Smoke and CO alarms (score: 1): Author: "Tom Rauch" <w8ji@contesting.com>; Date: Mon, 1 Oct 2007 19:38:03 -0400; Assuming it is battery operated and has no wires attached.....most important is the antenna. How far away? What type? What type feedline? Does it have a good balun? 73 Tom __________________________; /archives//html/RFI/2007-10/msg00002.html (7,352 bytes)
252. Re: [RFI] Smoke and CO alarms update (score: 1): Author: "Tom Rauch" <w8ji@contesting.com>; Date: Mon, 8 Oct 2007 13:51:08 -0400; What is a boom balun? _______________________________________________ RFI mailing list RFI@contesting.com http://lists.contesting.com/mailman/listinfo/rfi; /archives//html/RFI/2007-10/msg00024.html (8,498 bytes)
253. Re: [RFI] High Noise Floor (score: 1): Author: "Tom Rauch" <w8ji@contesting.com>; Date: Mon, 8 Oct 2007 21:29:37 -0400; Landon, What type of lines are in the area? Some lines can elevate the noise floor without sounding too much like power line noise if they are three phase with bad corona on all phases. Think of it; /archives//html/RFI/2007-10/msg00027.html (8,728 bytes)
254. Re: [RFI] CFL bulbs - NO WAY (score: 1): Author: "Tom Rauch" <w8ji@contesting.com>; Date: Thu, 18 Oct 2007 18:14:39 -0400; Just because a person claims the total birth to grave emissions are higher in an internet chatroom doesn't mean it is factual. There is pretty much universal agreement all around the world that at l; /archives//html/RFI/2007-10/msg00074.html (10,080 bytes)

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