A sudden ionospheric disturbance (SID) is an abnormally high ionization/plasma density in the D region of the ionosphere caused by a solar flare. The SID results in a sudden increase in radio-wave absorption that is most severe in the upper medium frequency (MF) and lower high frequency (HF) ranges, and as a result often interrupts or interferes with telecommunications systems.[1]
from Wikipedia
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Station I55387FI from ITALY -Tuscany
Station :
Antenna Mini-whip
SB: Intel SST Audio Device W10
Software :DL4YHF's Spectrum Lab (Audio Signal Analyser)---------------------------------------------
Copyright 2000 - 2014 Wolfgang Buescher
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Plotter con stazioni di riferimento che operano in VLF .
Saranno queste che andremo a monitorare per capire i S.I.D. (disturbi improvvisi della ionosfera ) causati dai brillamenti solari,interpretati sul plotter come improvvisi picchi di segnale.
Plotter 10/02/2018 -monitored station DHO38
| DHO38 | Rhauderfehn, Germany | 23.4 kHz |
Start 13:02
Peak 13:19
Event compared whit:
www.solarmonitor.org
Plotter 02/02/2018
(Nare nel ploter sotto l'arrivo dell'alba.)
19-20 Dicembre 2017
