G7IZU RRD Blog

 
Live audio spectrogram 49.970 MHz b/w ~120Hz as received in Tavistock, Devon, UK. Approx 1hr per screen.
Click for full-sized image. Use browser "back" button to return here.
Below: plot of meteor rate and signal duration per hour.
One tick per hour and approx 5 days of history. The latest data is on the right >>
Plot of meteor rate/duration per hour

"Count +5" etc refers to the detection trigger levels of noise +5dB, noise +10dB etc.
The duration shown is seconds per hour of signal received above the trigger thresholds.

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How is this data collected and how do I use it?

The data above is compiled from signals reflected by meteor heads and trails. I am now receiving the DOURBES meteor beacon on 49.970 MHz. The transmitter is located beyond the normal direct reception range at a distance of 630km. The hills of Dartmoor National Park shield me from the majority of any direct reception, although I will be susceptible to extra signals and interference during tropo propagation events. These events may falsely increase the counts and initiate false meteor activity alerts.

I use DL4YHFs Spectrum Lab software to process data from signals received on a Yaesu FT-857 transceiver.
Spectrum Lab is programmed to send email alerts (using 3rd party software).

How to receive meteor activity alerts?

"HIGH" and "VERY-HIGH" meteor activity alerts are issued via email (subscribe to alerts here)
posted on my blog page and sent via my Twitter feed @g7izu

NOAA Kp index

Noaa/SWPC Kp-Index (today)
Estimated Kp Index last 24hrs
Links


BBC Stargazing Live
 
RMOB

Meteor Outlook
Spaceweather
GI4DOH Live

 
More links

My system is used in the following graphic (from www.qrz.com) to supply the
MS CNT (Meteor Scatter Count) and MS CND (Meteor Scatter Conditions) data.



[Page version:09/05/2013 22:30]
 

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This website is Copyright © 2004-2013 Andy Smith G7IZU.
Re-use of original graphics, data and alert systems on other websites is expressly forbidden,
unless prior authorization has been obtained from myself.
Email: g7izu (at) television.f9.co.uk
Twitter: @g7izu

Any comments please to the author: g7izu(at)television.f9.co.uk