Hello everyone new user from UK. Pleased to receive my new 600+ from USA very quick delivery. Nice unit, heavier than I thought but build quality seems very good. only had one other counter a radgem2 (thing just with leds) so not really a Radiation hobbyist just interested in things. Anyway on receiving this and just now setting it up. so far so good. Could do with a better set-up guide. but think I have managed to get it connected to the map. First observation was it seems to be reading high when I look at the map numbers are fairly low being around 20. I am regularly around 50 counts. but looking at the map i can see that others with the 600+ are reporting around the same. Is the 600+ just more sensitive (as its alpha detecting also) my house bricks are 100+ CPM