Ideally I would like a detector that has either auto ground balance, or, I could switch out of auto ground balance and into manual balance and tune it myself. The reason I would like the manual ground balance option is for things like looking for meteorites.
Making your machine slightly positive really kicks up the signal response on meteorites, because as I said before it makes the machine more sensitive.
As Dave said, you can take the 3500 out of auto ground balance and into FIXED GROUND BALANCE. But it is just what the name implies. It is FIXED, at whatever ground balance the auto-ground last fed into the processor. When you are in FIXED, you have no ability to change the balance at all, with a machine that had manual mode, you would be able to adjust the ground balance.
I find it interesting that Minelab took this approach to one of their other functions, that being, the AUTO - TUNE function. On the new GP3500 you can auto-tune, to try to find the best fequency by pushing a button. This is a feature found on the SD2200, and all the GP series. The GP2100 is a manual tune. HOWEVER, with the new GP3500 they included the auto-tune feature, however, they also included the manual tune like on the SD2100, so now you have the best of both worlds.
I would like to see them do the same thing with the AUTO-Ground balance feature. Give us the ability to also manually tune, if we want to.
As far as the GP3500 being too pricey, if you are paying too much, then you are not buying your machine from ol' DOC.
What's that old saying? "I lose money on every deal, but I make it up in volume!"
Doesn't make a lick of sense does it! However, thanks to all of you, I have been able to keep my prices more than competitive and because of the volume I do, I still can support my own detecting expenses.
If I told you how much my gross sales were last year you wouldn't beleive me, but let's just say that the amount of coils that I imported from COILTEK last year was in the hundreds of thousands of dollars ! What in God's name do you guys do with all of these coils?
The way I figure it, given the number of coils that I sell, every detectorist must have at least 23 coils in their garage.
I guess one of the things that makes me very happy is that you rarely see COILTEK coils on Ebay. People don't get rid of them. When you do occasionally see a COILTEK coil on Ebay, people fight over them and almost end up spending as much for a used one as they would have a new one.
The things seem to last forever. I have had a 14 inch mono that I have been using for 6 years. It was even in my truck when I rolled it, and it has a big dent in it, but it keeps finding gold!
Take care!
DOC