fisher gold bug metal detector

[Unregistered]

Hi to all
I have got a fisher detector which deosn`t go deep very much,I would like to get some advise on how I can make it go deeper,adding to voltage or ampers,or adding some kind of amplyfier to the itscircuit,or if the last solution is more turns in the coil socan you tell me how many turns and what size wire? will be any harm to device when I connect it?
You can email me on; [email protected]


thanks fash