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| To: | <[email protected]> |
|---|---|
| Subject: | Re: LF: RE: 503.6kHz Test |
| From: | "James Moritz" <[email protected]> |
| Date: | Sun, 11 Oct 2009 23:33:48 +0100 |
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| In-reply-to: | <[email protected]> |
| References: | <[email protected]> <024801ca4a9f$9f087eb0$0217aac0@jimdesk> <[email protected]> <D6849FB7FEFC457C9C0512154FD27378@JimPC> <[email protected]> |
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| Sender: | [email protected] |
Dear Gary, LF Group,This is what the signal looks like for about 11/2 hours up to 2200utc. The red signal is G4WGT, the yellow one is G4JNT's WSPR beacon. The blue line is the noise level scaled to about 300Hz bandwidth, to give an idea of the audible strength as a CW signal. The plot settings are not ideal to show variations in signal level - there are actually short periods where the signal fades to inaudibility that don't show up here, but it gives a reasonable idea. G4WGT I think must be mainly sky wave here so presumably the fading is due to different sky-wave paths. G4JNT is a very stable ground wave signal here during the day, so I imagine the fading here is due to the combination of ground wave and sky wave. Cheers, Jim Moritz73 de M0BMU
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