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| To: | [email protected] |
|---|---|
| Subject: | Re: VLF: strange transmissions |
| From: | Markus Vester <[email protected]> |
| Date: | Mon, 1 Aug 2011 08:29:05 -0400 (EDT) |
| In-reply-to: | <[email protected]> |
| References: | <[email protected]> |
| Reply-to: | [email protected] |
| Sender: | [email protected] |
|
Hi Stefan,
three of the frequencies seem to be the alternate frequency set of the Alpha (RSDN 20) navaids, mentioned on
F6 12500.00000 Hz = 16 x 781.25 Hz
F7 13281.25000 Hz = 17 x 781.25 Hz
F8 15625.00000 Hz = 20 x 781.25 Hz
There also seems to be another one somewhere around 12.75 kHz.
Best regards,
Markus (DF6NM)
-----Ursprüngliche Mitteilung-----
Von: Stefan Schäfer <[email protected]> An: rsgb_lf_group <[email protected]> Verschickt: Mo., 1. Aug. 2011, 12:55 Betreff: VLF: strange transmissions VLF, There are strange transmissions near 12.4, 13.3 and 15.6 kHz, narrow band, very strong here in Heidelberg http://www.iup.uni-heidelberg.de/schaefer_vlf/DK7FC_VLF_Grabber.html and also in Iceland http://simnet.is/halldorgudmunds/TF3HZ_VLFgrabber/index.html, also very clear at http://www.ok2bvg.cz/vlfgrabber/ and others. Does anybody know what it is? Looks different to the often seen staircases during transmitter tests... Unfortunately many VLF grabbers are paused / OFF these times... 73, Stefan/DK7FC |
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