Its a TR-IB and is never wrong, even on bottle caps. It does not matter how big the iron is or how deep, if it can get a signal it properly analyzes it as iron.
It does not have as much depth on conductive targets; if the needle moves right, or does not moves at all, you dig it. Its great for iron innfested sites.
The newest Arado Iron killer is the 320, and has a 10" DD loop and has a push button to retune both audio and meter circuits. Its also a TR-IB and cost $2046.
While it would be a nice new detector to try out, one at its price that is only ferrous/non ferrous, and not for bad ground and so limited in use really makes for some
deep pockets. And the way detectors are used in the U.K. compared to the U.S. is very different-they go all the way back to the Bronze Age.
But, if anyone is hunting with a 320 I'd like to hear of the results.
