I have bought a second hand Quattro for an irresistible price to try the FBS technology from Minelab. Once in a month I get close to sea for a few days and so I do some beach detecting. There is one particular beach where I have found a lot and I have cleaned it quite well with my other machines. I expected to find some deeper stuff I missed before but either there is none or the machine does not go deeper than a Tesoro Silver uMax with a 12x10 SEF coil (but that would surprise me). I also still dig some rusty steel bottlecaps and lots of pulltabs anyway (I expected that).
On another hand, I seem to start recognizing the bottlecaps by sound/id. There are three types of coins in DK, Cu-Ni with a hole (sound like a pulltab
), Aluminium bronze (sound like silver coins
) and smal Cu ones (have not found enough to recognize). Great thing is, that it is really stable close to the water. All other machines went crazy (except for Tesoro Tiger Shark in Salt mode which kind of worked)
I am still not decided which is better for me - ferrous or conductive audio. If I want to hunt without looking at the screen, then it is ferrous. Otherwise conductive in connection with the meter gives the most information IMHO.
I know the machine has quite some potential. How could I get deeper? I am considering a larger coil (15x12 SEF) and I was told that manual sensitivity goes deeper than auto. What would be the best "beach" setting? Currently I use low trash, sensitivity auto (will change to manual today), conductive audio and no discrimination. What is the optimal swing speed?
On another hand, I seem to start recognizing the bottlecaps by sound/id. There are three types of coins in DK, Cu-Ni with a hole (sound like a pulltab
I am still not decided which is better for me - ferrous or conductive audio. If I want to hunt without looking at the screen, then it is ferrous. Otherwise conductive in connection with the meter gives the most information IMHO.
I know the machine has quite some potential. How could I get deeper? I am considering a larger coil (15x12 SEF) and I was told that manual sensitivity goes deeper than auto. What would be the best "beach" setting? Currently I use low trash, sensitivity auto (will change to manual today), conductive audio and no discrimination. What is the optimal swing speed?