Lightning Detector using RadLog

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1 month 3 weeks ago #4375 by GetSirius
Lightning detection is probably a little off topic for a site that relates to detection of ionizing radiation. I find there is more than one way to use RadLog...

I have been using RadLog to record pulses from a lightning detector. Last night we had our first electrical storm for the season. Not a big storm, just some lightning here and there. RadLog produced a nice graph showing the results, image attached.

I am running two detectors on a Windows7 computer, one for lightning and one for radiation. This is working fine for me, thanks to mw0uzo's suggestion to use different Windows users, one for each instance of RadMon.

My lightning detector is based on a circuit found at www.techlib.com/electronics/lightningnew.htm#Magnetic
The pick-up coil is a roll (494 feet, 150 meter) of #34 enameled copper wire purchased on eBay. I put a small ferrite rod in the center of the wire spool. Resonance is about 10kHz.

I will put my background radiation detector back on the Radmon map once I get through a few other things. Looking at radon in my home at the moment. Also need to make a waterproof housing for a Geiger Muller tube to be outdoors. Have one on our truck that has held up for more than a year and several rough off pavement trips. That is a STS-6 cased in PVC pipe, mounted close to the ground on the bottom of our truck. I expected it to break on our first trip, but it did not. Traveling off pavement in Utah, USA, one can definitely tell when one is near an old uranium mine. Readings went from about 60-80CPM to 2000CPM or more (failed to write it down) when parked on mine tailings! We did not camp there... Also interesting to see how the background radiation increases steadily as we drive west from Wisconsin to Utah. Background then dropped again as we traveled farther west into California.

siriusly, Chuck
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1 month 3 weeks ago #4379 by mw0uzo
That's an interesting alternative use for RadLog! I should make it more of a general logger for different things, with definable custom units and devices.

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1 month 3 weeks ago #4380 by Juzzie
I have used Radlog to log UV radiation. It is a very good app. Nice work Dan!

Owner and operator of "southofhobart" monitoring stations.

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5 days 1 hour ago - 5 days 1 hour ago #4416 by GetSirius
Interesting graphs showing lightning activity vs radiation. Rain arrived as the lightning peak. Radiation shows a small bump when the rain started. SBM-20 GM tube is mounted in a thin wall pvc pipe outside on a painted wood wall, about 20 cm above a roof. Lightning detector is indoors, a small coil of wire resonating about 15KHz.
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Last edit: 5 days 1 hour ago by GetSirius. Reason: change image

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