Second video: Detector is set to total ( I assume it's counting gamma radiation, not alpha or beta decays ) and from minute 1:00 up to minute 2:00 it goes from 40 counts to 97 counts.

That roughly leaves us with 57 gamma counts a minute. 57 CPM is what I would describe as normal background radiation. Nothing to see here.

I'm actually finding his travels quite entertaining. If what I have read is correct, you pretty much have to calibrate it every time you turn it on to test, and then you have to know what the expected background is before making any kind of call on what is low or not. He and his pal, PatrioticSpace, have admitted they are just average joes, not experts and still learning and that nobody but someone with a degree has the right to tell them they are doing it wrong....all in the same breath.
So it's the dumb telling the dumber (those who send these guys $$) they are dumb but don't really care about anyone's opinion.
But they are also using Thomas Bearden, of "free energy" notoriety, as proof of their theories being right.