Geiger-Counters

Archived from radmon.org - originally posted 24/12/2018 As the title suggests, I bought a Gamma Scout. I was, let's say, underwhelmed with it so decided to give my thoughts on it. I'll not cover everything here so if you are interested then it would be advantageous for you to read up on the Gamma Scout Alert on their website prior to reading my thoughts. I had been wanting a Gamma Scout for a couple of years to add to my collection. I'd seen them on the web, in Youtube videos. In places like Fukushima and Chernobyl/Pripyat etc. and from what I had seen I assumed, I think it's fair to say, I'd

Archived from radmon.org - originally posted 19/07/2017 Blackpool UK - 19 July 2017 - Started around 17:00 BST / 16:00 UTC During quite a downpour today, 20mm in one hour. At it's peak was 65mm/h. Background radiation increased by approx 50% / 11CPM over a 2.5hour period. Not much by any means but still an indication there was some radioactive substance in the rain. Please note the Radmon graphs are UTC and the rain graphs are BST (UTC + 1) and so there is an hour difference between them. What caused it? I could be anyone's guess. Radon causing decay products to get caught up in the rain?

Archived from radmon.org - originally posted 04/04/2016 I have finished up building/setting up my home radiation monitoring station and is all up and running. :cheer: https://www.schmoozie.co.uk/radmon/ (currently offline.) I won't go into too much detail as it is pretty much just a NetIO GC10, in an enclosure with a couple of buttons and switches added. It is mounted outside under a canopy on my workshop so rain is no issue and I have used all sealed switches/buttons etc with rubber gaskets on each to seal it up nicely. The window for the tube at the front is covered with some Kapton tape to

Archived from radmon.org - originally posted 20/03/2016 After some more testing and investigation I found the issue in sketchy GPS was actually the code. I've fixed it and the results are much, much better. There is just one tiny issue now where the CPM being read from the counter is recorded occasionally with an extra digit or two counts on one record. I reckon once that is sorted I can call it version 1.0 :) I have updated the download link with the latest code. Here are the results so far: https://www.google.com/maps/d/edit?mid=zasLAdbQXqtw.kInoUYbBsJO8&usp=sharing I changed the way

Archived from radmon.org - originally posted 19/03/2016 I have sorted the battery issue by adding a couple of 18650 Lipo's and a buck converter to regulate the voltage to 5.0V. That seems to be holding up well. The entire unit (logger and counter) consume about 10ma at 20CPM background radiation so roughly working out if my batteries are 2000mAh (they state 2600mAh but I doubt I will get that) and the unit uses 10mA then it should last for around 200 hours! I just need to sort a charging circuit now to charge the batteries when the unit is powered from 12v from the car, or mains adapter. I

Archived from radmon.org - originally posted 17/03/2016 I recently bought myself a DP-66M from ebay, then another one, then a NetIO GC-10 and I have another on the way. Maybe a different one soon? It's fair to say I have been bitten by the Geiger counter bug! I am building a static outdoor monitoring station at home, monitoring 24/7, but currently waiting on parts from China. In the meantime I have been playing with the GC-10 and built a prototype mobile GPS logging unit to take on my travels. I live not too far from Heysham power station and the Westinghouse Springfields nuclear fuel