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| To: | [email protected], "YV7MAE Maritn A. Echazarreta D." <[email protected]> |
|---|---|
| Subject: | LF: 15 dB noise drop in 20 minutes |
| From: | Stefan Schäfer <[email protected]> |
| Date: | Fri, 22 Jun 2012 00:22:06 +0200 |
| Reply-to: | [email protected] |
| Sender: | [email protected] |
| User-agent: | Mozilla/5.0 (Windows; U; Windows NT 6.1; de; rv:1.9.1.8) Gecko/20100227 Thunderbird/3.0.3 |
Hello Martin, LF,I'm fascinated by the noise drop on LF which occurs during your sunrise. On your grabber (http://dl.dropbox.com/u/74746618/LF/YV7MAE_LF_Grabber.html ), i can see the noise drops 15 dB within 20 minutes. That means the sun must be very strong so the ionosphere is very quickly ionized. Also the local lightning density must be extreme. All in all it looks like a very sensitive system. But some directivity would be interesting :-) 73, Stefan/DK7FC PS: I will be on 136.172 kHz again this night, starting in a few minutes... |
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