Are you nugget hunting with it?
Jim (parrot) gave you the gist of it. I've owned a couple of them. I thought they were pretty decent units once you got used to them.
If you are nugget hunting, the first tone, the low tone tells you something set it off. But you don't know if it is metal or mineral. The second tone tells you if it is metal or mineral. So tone responses equals this:
Low Low = mineral (hot rocks, etc)
Low High = metal (any metal).
When you get the Low High tone, if you want to, you can look at the center number sign. A minus (-) sign = ferrous objects. A plus (+) sign = non-ferrous objects. The actual number itself is just a signal strength number.
So if you are nugget hunting in a area with little trash, you ignore the display and just listen and ignore the low low tone responses. You just want to pay attention to the low high tone responses and recover all of them. It does see pretty good through hot rocks, better than the new GoldBug/G2 models
If you are hunting around places that have lots of iron trash metal, then you might pay attention to the display and ignore any low high tones with a minus sign and large signal response numbers. I'd still check out any low signal strength minus numbers if you are nugget hunting in ferrous trash though. Also any plus sign low high tones with very high signal strength numbers are not likely to be nuggets either.
All in all not a bad machine once you get the hang of it. 30 kHz is very sensitive to small stuff, however it won't go real deep in high minerals on real small stuff. The ground balance circuitry is very good, and the mineral/metal response is pretty trustworthy -if it gives a high tone, its metal.
If you bring it to town, I wouldn't take it to a turf park, but it can be used pretty effectively in totlots.
Good luck.
HH
Mike
