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Total 6 documents matching your query.

1. Topband: RFI powerline ? (score: 1): Author: Andree DL8LAS via Topband <topband@contesting.com>; Date: Tue, 11 Jan 2022 08:20:09 +0000 (UTC); Hey gentlemen, I have a powerline 110KV nearby my beverages....this is the sound in AM, not strong but also not good.Is this RFI normal from the line or is this an insulator or another problem?Her; /archives//html/Topband/2022-01/msg00073.html (6,929 bytes)
2. Re: Topband: RFI powerline ? (score: 1): Author: Karel Matousek <ok1cf@atlas.cz>; Date: Tue, 11 Jan 2022 10:37:02 +0100; Hi Andy. I do have the same noises problem over here as you have. I found that it isnt a 110 KV powerline noise, but probably a broadband noise is coming from the direction 10 °here in JO60OK. It; /archives//html/Topband/2022-01/msg00074.html (8,881 bytes)
3. Re: Topband: RFI powerline ? (score: 1): Author: David Olean <k1whs@metrocast.net>; Date: Tue, 11 Jan 2022 09:25:04 -0500; Hello Andy, It looks like some form of man made QRM, and not power line noise. I am very familiar with powerline noise, but our noise is at 120 Hz and yours will be at 100 Hz, 60 vs 50 Hz) so it shou; /archives//html/Topband/2022-01/msg00077.html (10,727 bytes)
4. Re: Topband: RFI powerline ? (score: 1): Author: Don Kirk <wd8dsb@gmail.com>; Date: Tue, 11 Jan 2022 09:53:30 -0500; Hi Andy, I agree with David (K1WHS) that your RF Spectrum waterfall display does not look like powerline noise as it shows very repeatable bright and dark bands and the bright bands are equally space; /archives//html/Topband/2022-01/msg00078.html (11,327 bytes)
5. Topband: RFI powerline ? (score: 1): Author: "Roger Kennedy" <roger@wessexproductions.co.uk>; Date: Thu, 13 Jan 2022 06:38:38 -0500; I have a 400kV powerline about a mile away. Twenty years ago it had become quite noisy - you could see the big glass insulators arcing slightly at night. After lots of complaints to the National Grid; /archives//html/Topband/2022-01/msg00084.html (7,931 bytes)
6. Re: Topband: RFI powerline ? (score: 1): Author: Mark Robinson <markrob@mindspring.com>; Date: Thu, 13 Jan 2022 20:10:59 -0500; This is what my 120Hz line noise sounded like. Halfway through the recording you can here it splutering on and off as well. https://www.mediafire.com/file/96iicptbq68y4tr/2014-10-07_Line_Noise.mp3/f; /archives//html/Topband/2022-01/msg00085.html (7,558 bytes)

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