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Our school weather station http://www.northantsweather.org.uk has picked up the signature of thunder storms in the early morning of the south west coast. This has been on recent days of high pressure and cloudless skies. The station manager has checked with other stations and the same phenomenon was detected so it is not a computer error.The system detects low frequency RF emmisions. Any suggestions anyone?
My own guesses include the following:
1. Reception of Loran marine direction transmissions.
2. Submarines transmitting VLF communications signals. Also one of the signals was from over land in Cornwall.
3. Unusual radio propagation conditions, but surely sporadic E would not affect frequencies that low!
4. Over the horizon radio; but again, this used HF.
The weather station is located in Northamptonshire about 250 miles from the south west (loc: IO92QE)
We are intigued to know what is being detected.
Robert de MX0 NGS Northamptonshire Grammar School Radio Club.
Robert, M5RPT
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From your own website, the following description of how the thunderstorm detector works:
 Originally Posted by [b
Quote[/b] ]Its direction-finding antenna provides information on the bearing of thunderstorms while storm distance is calculated from received signal strength.
The distance is estimated from signal strength and as such could be very inaccurate.
Jim GM3ZMA
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