Rented a Whites Treasure Master TM 808 for vacation and had a faint signal. As I dug down the the signal got stronger (Up to 20 on the meter) Strongest signal I had all week. Unfortanately I ran out of time and could not find what the signal was about. I got to 2 feet down and decided I needed to come back another day with possible help. My question is, does the metal dictate the strength of the signal. The shovel I had only went to 7 when I had the unit dirrectlt over it.
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