IK1QFK VLF MONITORING STATION Live data from CUMIANA (TO), NW Italy, south Europe

(To see on google map click this link  (44,96° NORTH - 7,42° EAST)

System one: LIVE mp3 audio streaming

Audio signals coming from Marconi antenna: a big "T" 11 m high with a double top hat 45 m long.
You can listen the audio streaming live clicking here: http://67.207.143.181/vlf15.m3u
 

The audio streaming server is provided by Paul Nicholson.
See at Paul's page "Live VLF Natural Radio" for others audio stream available: http://abelian.org/vlf/

Here below the first LIVE spectrogram, updated every hour at xx:01.
It shows the last 8 hours VLF activity, as received by Marconi antenna (electric field).

System two: GEOMAR

Amplitude scale: two channels listed below.

• Channel 1, seismic monitor. Frequency range: 1 to 40 Hz for the top spectrogram. Signals coming from geophone I/O SENSOR Nederland b.v. model SM-4/UB8 (see at http://www.geophone.com/techpapers/SM-4%20Brochure.pdf) 40 dB amplified with a very low noise preamplifier.
• Channel 2, electric field. Frequency range: 1 to 105 Hz for the bottom one. Signals coming from Marconi antenna: a big "T" 11 m high with a double top hat 45 m long (see the first picture in the article http://www.vlf.it/romero/seismic_rdf.htm)

Picture, updated at xx:05 minutes of every hour, shows last 8 hours. All date and times are in UTC.
The scroll time is 40 s, and the frequency resolution 61 mHz.
As the receiving station is placed not too far from an industrial area, sometimes strong tones are detected by geophone sensor, caused by mechanical machine (1 km far from here).

Here below the same data elaborated as plotting traces. The picture shows the last 30 hours, and values are detected every 150 s.

Picture, updated at xx:05 minutes of every hour. Four traces are reported:

• Geophone trace , it shows the average and peak signals coming from the geophone sensor, in 1-20 Hz range.
• ULF noise 10 Hz , it shows the medium value between 3 and 30 Hz.
• ELF noise 100 Hz , it shows the medium value between 30 and 300 Hz.
• 2th SR freq. , it shows the frequency of second Schumann resonance (in Hz).

System three: INDUCTION COIL

Spectrum scale: magnetic components of the spectrogram below with long term average curve (red) and last waterfall line.
Spectrogram: magnetic filed received with an ICS101 Induction Coil (look here for some technical data) with high permeability core, electric field shielding, internal low noise preamp and filter. Frequency range 0.1 – 120 Hz, with a sensitivity of 1 pT at 1 Hz,  here with a 30 Hz low pass filter turned ON.

Schumann resonances are almost always visible: when not covered by local noise coming from 380 kV high power line.  Also the cars, passing 25 m away from the sensor, leave their trace in the area below 10 Hz. The coil is simply connected to the MIC input of a Realtek 97 audio card.

System four: 9 kHz band

Monitoring of 9 kHz band. A reception window centered on 8970 Hz with a resolution of 3.6 mHz, for the monitoring of testing transmission of radio experimenters. Electric field on top received with Marconi "T" antenna; on the bottom: central frequency of Alpha tone on 11.904,76 Hz, used as frequency reference.

It shows last 12 hours activity.

Here below the real time situation about lighting strikes in Europe. Courtesy of http://www.blitzortung.org

Unattended operations, signal conditioning, spectrograms and RDF functions are performed with SpectrumLab: http://freenet-homepage.de/dl4yhf/spectra1.html . Many thanks to Wolfgang Buscher for his support.
Automatic FTP process is realized with SyncBack Freeware V3.2.14 http://www.2brightsparks.com/downloads.html.

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