One thing I notice with war nickles, even with the silver content to them they will not all read the same, but they are close in readings. My Sovereign which is very hot on nickles (first year dug more nickles than dimes) I seen where war nickles will read from the normal 144-145 all the way up to 151, but the tones were the same. I dont know if it was the different years or mint marks that made the difference, but know the silver content would make some difference on some, but not all of them.
One of the things that may have made the difference with the Quattro to read this high of a number it it may have seen a pulltab or something right before the nickle, so it was still reading the other item when it seen the nickle as I had seen many times when I had my Quattro. This was the reason I learned whenever you got a good signal you thought was good to raise the coil and let the threshold reset, then go back to just that target and sweep it again to get a correct ID. If it was the same good tone it was good, if it nulled it was a disc out target and if the tone changed that would be the ID of that target. I did some testing with my 2 I had and found that if it went over a quarter, then a nail right next to the quarter before the threshold would reset the nail would also read the same as a quarter as long as the coil was sweeping over it untill I lifted the coil for the Quattro to reset itself. The reason I feel this does this is the recovery is a little slower on the Quattro and the reason it will lock on better to a good target than even a Explorer. Once it sees a non ferrous target it seems to lock on to it untill the thresold will reset and every metal target after it seems to sound the same untill the threshold reset.
What is odd is if I run the coil over the nail first then the quarter it didnt seem to lock on to the nail as the quarter would read after the null of the nail as it should, but if there was another nail after the quarter that nail would read as a quarter. It seems like if it seen a target and the next target was lower conductivity it would read it as the higher conductivity, but if it seen the lower conductivity target first than the higher one the higher one would read over the lower one.
This is why I wonder if there was a pulltab or something it seen that was higher conductivity and ID when it seen the war nickle and gave the same ID on the nickle as the threshold had not reset. If you want to give it a try put a quarter and a nickle about 4 inches apart and get a good lock on on the quarter, then before the threshold returns go over the nickle and it too will probably give the ID of the quarter.
Like I say I feel this is why the Quattro seems to lock on to those deep targets better than even the Explorer does as it sees a non ferrous target and seem to keep it in the meomory of the IC untill the threshold resets itself to clear it and untill then every metal target will sound the same as long as it is a lower conductivity than the first target.
I would have kept my Quattro, but the tones were not adjustable and too high pitched for me and my bad hearing loss as the high pitched almost sounded like a null to me.
My last time out with it I got a 1917 wheatie that was over 12 inches deep in with a lot of nails,but the quatrro would lock right on to it and I used my Uniprobe to find it is why i know of all the nails as all I could get where signal and nails everywhere and almost gave up, but the Quattro gave such a nice signal I kept digging. My hunting buddie with the Explorer XS got a weak one and ask to see if the Quattro could see it, the Quattro gave a great signals and locked right on everytime I let the Quattro reset by lifting the coil,then went back over it again. The guy with the XS was impressed as the Quattro seen it better than his XS. When dug it was a barber dime at 10 inches.
So this is one tip I give others that uses the Quattro is when you think you have a good target to try to get the accual location of the target, then lift the coil off the target so the threshold will reset, then go back over it and get a correct ID of that target, save me digging a lot of trash and more good targets when I had mine.
Rick
