So after working out many quirks with my 600+ model I felt confident to test it out "in the field" at work starting this week on Wednesday. My work week starts Wednesday and ends Sunday so I have been taking the detector with me to work each night and monitoring readings while having the detector in my work pants side pocket. Although I do not want to say where I work at this time I did visit my friends for lunch after work today and was very surprised when my detector went nuts!!! Take a look at the image below. https://www.dropbox.com/s/3a9qnbkth3ip2ak/2018-08-23%2015.13.08.jpg?dl=0 It turns out that the tiles in my friends bathroom are radioactive. I was getting beeps standing in the bathroom by the sink washing my hands before I eat. The bathroom is covered with radioactive tiles on all walls but ceiling and floor did not show any high readings. The detector went off when it was about 2 feet from the ceramic/radioactive tile wall. What do you guys think?
Some further tests: Put some beta absorbers between tiles and counter to see if this is mostly beta or mostly gamma radiation. Beta absorbers like e.g. >3mm glass or aluminum, >2mm steel or copper, >100 sheets of copy paper