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| Subject: | LF: DJ8WX - nil copy, but my mystery signal back for night 3 |
| From: | Roger Lapthorn <[email protected]> |
| Date: | Wed, 9 Mar 2011 08:10:12 +0000 |
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Nil copy here of DJ8WX's QRSS3600 overnight on 8.970022kHz in 424uHz BW. I am surprised not to see anything. My mystery signal (see attached) at 8.9701kHz has reappeared for the 3rd consecutive night, but more buried in the noise last night. I wish someone could explain why this signal appears with the same periodic shape every night at precisely the same frequency. Can this be a natural signal or man made interference if so long periodic and accurate? Things like SMPUs and light bulbs wander around a lot, although I guess it must be local if others cannot detect it. My grabber will be off air in a few hours as I need the PC for other things, but I now have a record over 3 days which is interesting from a noise floor perspective. No amateur VLF signals detected here in that period. 73s Roger G3XBM -- g3xbm-qrp.blogspot.com/ www.g3xbm.co.uk www.youtube.com/user/g3xbm G3XBM GQRP 1678 ISWL G11088
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