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References: [ +from:ve3edy@cogeco.ca: 11 ]

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1. [RFI] HVAC Variable Speed Motors (score: 1): Author: "Larry Parker" <ve3edy@cogeco.ca>; Date: Sun, 27 Mar 2011 21:41:10 -0400; I to have inherited this problem after purchasing a new home that has a high efficiency heating/airconditioning unit installed. My unit was manufactured by Tappan which I discovered had this newer EC; /archives//html/RFI/2011-03/msg00098.html (8,580 bytes)
2. [RFI] Low voltage lighting solid state "transformers" (score: 1): Author: "Larry Parker" <ve3edy@cogeco.ca>; Date: Mon, 28 Mar 2011 09:41:26 -0400; I have taken out this style of undercounter lighting from the house I just purchased. The power supply converting the 120 vac to 12 vdc functions at 20 khz. This generated HF pulse is being accentuat; /archives//html/RFI/2011-03/msg00102.html (6,972 bytes)
3. [RFI] New to list... (score: 1): Author: "Larry Parker" <ve3edy@cogeco.ca>; Date: Wed, 6 Apr 2011 09:56:51 -0400; Hi Dave, I had a similar RFI problem as you are having a very broad band static covering all of 160m,80, and 40m. It turned out to be the undercounter low voltage pucks lighting in my recently purcha; /archives//html/RFI/2011-04/msg00011.html (7,042 bytes)
4. [RFI] New to list... (score: 1): Author: "Larry Parker" <ve3edy@cogeco.ca>; Date: Wed, 6 Apr 2011 22:15:05 -0400; Hi Dave, My vertical antenna situation is similar to yours,my antenna was about 150 feet from the house and on 80m the signal was +40 db with peaks approx every 20khz. This repetiton continued below; /archives//html/RFI/2011-04/msg00013.html (7,224 bytes)
5. [RFI] Horrific Ugly Noise Found and stopped... (score: 1): Author: "Larry Parker" <ve3edy@cogeco.ca>; Date: Sat, 7 May 2011 19:20:38 -0400; I have taken out this style of undercounter lighting from the house I just purchased. The power supply converting the 120 vac to 12 vdc functions at 20 khz. This generated HF pulse is being accentuat; /archives//html/RFI/2011-05/msg00037.html (6,968 bytes)
6. Re: [RFI] Horrific Ugly Noise Found and stopped... (score: 1): Author: "Larry Parker" <ve3edy@cogeco.ca>; Date: Sun, 8 May 2011 09:05:18 -0400; Hi Dave, Well they all work on the same basic principal that they operate at 20 khz. Good idea ,but in actual fact mthey should be taken off the market because of the RFI they generate. I'm surprised; /archives//html/RFI/2011-05/msg00042.html (7,056 bytes)
7. [RFI] Possible Satellite Internet Interference (score: 1): Author: "Larry Parker" <ve3edy@cogeco.ca>; Date: Thu, 12 May 2011 10:51:16 -0400; Don't be surprised , but I think your RFI issues are with under counter lighting and the 20 khz. transformer used to power these horrible rfi generating devices and not from a satellite system. This; /archives//html/RFI/2011-05/msg00057.html (7,023 bytes)
8. Re: [RFI] 17 meter signal (score: 1): Author: "Larry Parker" <ve3edy@cogeco.ca>; Date: Tue, 19 Jul 2011 21:14:21 -0400; I am hearing it here as I write this note 0111UTC Wed.20 2011. About 5 to 7 S units with fadding . To me it sounds like machine code of some sort. I am at 43N 82W latitude. __________________________; /archives//html/RFI/2011-07/msg00019.html (6,958 bytes)
9. [RFI] Solar Panel RFI - Noise begins (score: 1): Author: "Larry Parker" <ve3edy@cogeco.ca>; Date: Mon, 22 Aug 2011 20:21:11 -0400; Ever 20 to 30 khz makes me suspicious of the new high freqency transformers on the market these day . They operate at a fundamental freq of 20 khz and radiate every harmonic from there up begining at; /archives//html/RFI/2011-08/msg00026.html (6,591 bytes)
10. Re: [RFI] Interference from AC units (score: 1): Author: "Larry Parker" <ve3edy@cogeco.ca>; Date: Mon, 29 Aug 2011 07:44:06 -0400; Most if not all High Efficiency AC units have a variable speed induction motor in them, The ac voltage fed to the motor is converted to DC inside the motor housing by an ac-dc control module which in; /archives//html/RFI/2011-08/msg00042.html (8,115 bytes)
11. [RFI] Interference from AC units (score: 1): Author: "Larry Parker" <ve3edy@cogeco.ca>; Date: Mon, 29 Aug 2011 13:10:36 -0400; Thanks for your comments Jim and suggested corrections to this RF hash. But how ,do I approach my suspected neighbor with this fix. Not sure as yet who it is and when I do find out I suspect they wil; /archives//html/RFI/2011-08/msg00044.html (6,452 bytes)

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