I got one today Ludlum 3 with the 44-9 probe. Anyhow coolest toy yet. I notice it clicks on occasion (background radiation) Some times I notice like a group of clicks all come in once in a while, is ...

Although they’ve been on the shelves of many online retailers for quite a few years now, Geiger-Tubes have been conspicuously absent from hobby electronics magazines/websites. It has to be said that ...