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References: [ +from:utility.rfi.pro@gmail.com: 86 ]

Total 86 documents matching your query.

81. Re: [RFI] A note from Sangean about switching power supplies (score: 1)
Author: "Frank N. Haas KB4T" <utility.rfi.pro@gmail.com>
Date: Sun, 8 Jan 2017 14:00:18 -0500
We already are fighting that battle. That ship sailed years ago. Exactly. Trouble is, most consumers will buy the noisy power supplies, and we will still have an ongoing and continuing fight on our h
/archives//html/RFI/2017-01/msg00031.html (9,414 bytes)

82. Re: [RFI] 160m Noise (score: 1)
Author: "Frank N. Haas KB4T" <utility.rfi.pro@gmail.com>
Date: Fri, 5 May 2017 16:08:12 -0400
The utility team may not have proper antenna systems to DF such low frequency signals. The Radar Engineers Model 200 series receivers can receive that low but a useful antenna is needed. If a directi
/archives//html/RFI/2017-05/msg00025.html (12,663 bytes)

83. Re: [RFI] white noise starting at 3780 and up (score: 1)
Author: "Frank N. Haas KB4T" <utility.rfi.pro@gmail.com>
Date: Sun, 16 Jul 2017 10:39:19 -0400
This thread reminds me of one of my most challenging interference investigations. The source was not VDSL or anything related to cable TV or Telco Internet service but it exhibited very similar chara
/archives//html/RFI/2017-07/msg00031.html (14,311 bytes)

84. Re: [RFI] Comcast - 80 meters rings phones (score: 1)
Author: "Frank N. Haas KB4T" <utility.rfi.pro@gmail.com>
Date: Sun, 19 Nov 2017 13:55:29 -0500
In years past, I have had great success putting .01 uf 1 KV disc capacitors in RFI-affected phones and wall jacks. The caps were installed right where the phone line enters the phone in parallel with
/archives//html/RFI/2017-11/msg00052.html (8,493 bytes)

85. Re: [RFI] Update... Re: external noise source identification (score: 1)
Author: "Frank N. Haas KB4T" <utility.rfi.pro@gmail.com>
Date: Mon, 14 Jan 2019 15:01:28 -0500
When I need to DF something in the HF spectrum I have had much success using the National RF Model HFDF Vector Gun kit. It is a loop antenna system with a wideband tunable amplifier. DFing with a loo
/archives//html/RFI/2019-01/msg00012.html (9,281 bytes)

86. [RFI] Just Curious (score: 1)
Author: "Frank N. Haas KB4T" <utility.rfi.pro@gmail.com>
Date: Wed, 5 Jul 2023 18:02:17 -0400
The List is still working. Perhaps the lesson is finally beginning to sink in that in order to resolve an interference problem, one must find the source in order to eliminate it. If the source is uti
/archives//html/RFI/2023-07/msg00006.html (10,439 bytes)

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