Wow! I guess uhf.... was never in the trades. How my 42 years in the trades would have changed if I hadn't busted a gut on my first rookie day, when I found my brand new tool belt had been nailed to the floor. Wow!
Relevantchair pretty much nailed it.
When I had my ATP, I was getting similar to what you are talking about. The cord wasn't properly wrapped. Problem solved.
Agreed that that machine will pickup the most irritating small objects. Many times after using my pinpointer in a little clump of dirt...