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Archived from radmon.org - originally posted 18/08/2019 As the title suggests. A video by DextersTechLab on YouTube. This is well worth a watch if you are interested in scintillation.

Archived from radmon.org - originally posted 12/08/2019 In reply to a nzoomed's question on radmon.org: Im wanting to build an outdoor monitoring station with an SBM20 and not sure if its good to use a PVC pipe to place the tube inside? Obviously im wanting something as thin as possible to let as many particles through as possible. Are there some materials I should avoid? Are beta particles typically encountered much in the environment? Should I only be worried about cosmic rays? Im not sure how much background radiation is from other sources, but im expecting there is a great deal from alpha

Archived from radmon.org - originally posted 25/12/2018 Curiosity got the better of me so I decided to open up the Gamma Scout. I managed to carefully remove the sticker enough to reveal the screws so here are some pictures of the inside of the counter. The pictures aren't great as I'm not really setup with good lighting etc. A quick update after living with my Gamma Scout for a few months. Despite everything I have written (which my opinion remains true and I stand by) I have really grown to love this counter. It's very handy and just 'there' when I need/want a counter. It is the first

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 15/11/2018 A very strange one here. I'm looking for answers but after scouring the internet I doubt I'll find any. My SBT-10A tube has been destroyed for some reason unbeknown to myself. The mica window has completely shattered. I have no idea why. In the pictures you can see the damage. It appears that the mica has either reacted with something or it has catastrophically degraded. The last time I used this was on 20/10/2018 (so less than a month ago) when I decided to setup a reasonably controlled comparison of all my sources (I'll post about that

Archived from radmon.org + more - originally posted 18/09/2017 I've been working on an air quality monitor over the weekend. I have a working model that samples and logs every 5 minutes into various .csv files that are used for drawing graphs. It is a work in progress, still much to do. Take a look here: https://www.schmoozie.co.uk/airquality/ Please ignore the data as it is not accurate as is just for testing purposes at the moment. I'll be dumping the collected data and starting from scratch when I get this into an enclosure and mounted properly outside. (All data shown on the page is

(Paraphrased) Archived from radmon.org - originally posted 19/03/2017 A radmon.org user was having avalanche issues with their SBT-10 Geiger Muller tube. Doing a little research I found a little information stating that each anode on the GM tube (there is ten in total) should have it's own quenching resistor. I have mine set with a 10Mohm on each anode (see pic below) and appears to work OK, although I haven't had it running for long and just some simple tests. When I got it I scoured the web looking for info but it seems there is very little. One recurring theme was that the voltage and

Archived from radmon.org - originally posted 11/08/2016 I have always been a little dubious about leaving radioactive test sources just laying around, although they emit small amounts of radiation. I knocked up a little lead lined box over the weekend to keep my test sources in. The box is just one of those cheapo wooden boxes from India (or somewhere) that you see for sale in markets and such that I lined with 2mm lead flashing (used above windows), painted bright orange with some paint left over from an old project. I added a label on top that is from a check source I bought from ebay and a

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