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1. LF: RE: Re: QRN (score: 1): Author: [email protected]; Date: Thu, 8 Jul 2010 08:57:05 +0200; <snip at 20kHz Well, I would say that the differences of amplitude of VLF signals between day and night are due the presence or absence of the D layer and that the deep morning and evening dips are; /rsgb_lf_group-archives/html/rsgb_lf_group/2010-07/msg00131.html (9,375 bytes)
2. LF: Re: Re: QRN (score: 1): Author: "Alan Melia" <[email protected]>; Date: Thu, 8 Jul 2010 16:49:59 +0100; Hi Dave that may be it he talks in it about bubbles formed over mountains ....due to updraughts??shadowing on the western side??.... doing tests on a 55kHz signal from Dixon Ca. I seem to remember. T; /rsgb_lf_group-archives/html/rsgb_lf_group/2010-07/msg00386.html (12,632 bytes)

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