Lifting The coil on the GTI 2500

[gabbyhayes]

Somewhere I remember reading a post about raising the coil when you get a certain reaction from the detector.

I know this is vague but I haven't been able to find the post where someone explained this technique.

When and why do you do this?

Has it got something to do with determining if it's iron????

Uncle Will, maybe it was something you were explaining???

Any and all help appreciated.

Thanx in advance!

Gabby

 

[Uncle Willy]

You can do this to determine if it's a big target like a beer or pop can. If you raise the coil up several inches or even a foot and you're still getting a signal it's a good sign it's something big.

Bill

 

[liltracs]

I know large metal items close to the surface cause an overload noise. Even silver dollars and have heard smaller items when sens. is turned up. That is one reason to hold the coil about 6 inches over the ground to size the target.

 

[John-Edmonton]

Unless you might be talking about ground balancing the coil with auto-trac or ground balancing the animal in true all metal mode for better performance?

 

[Uncle Willy]

That's called "bob and tune." Think maybe that's what he is referring to?

Bill

 

[John-Edmonton]

Heck, I don't know. Maybe gabbyhayeswill tell us so we can put this one to bed.

 

[treasurefiend]

[quote Uncle Willy]You can do this to determine if it's a big target like a beer or pop can. If you raise the coil up several inches or even a foot and you're still getting a signal it's a good sign it's something big.

Bill[/quote]

Hit the nail right on the head.

 

[gabbyhayes]

Actually I wasn't referring to ground balancing though that does bring up a question with that technique.

I was referring to hunting in discriminating mode finding a target and then raising the coil to help with its identification.

I have been playing with the ground balancing and was wondering why a person would want to do it manually?

Which is better auto trac, fast trac and which speed...low....med...high

Thanx for all the help

Gabby

 

[John-Edmonton]

My buddy does that on his Tesoro occasionally. I asked him what the heck are you doing? He said by pumping the coil over the target, he gets a better understanding of the target. This doesn't work on my Garretts. My version of getting more clues about a target is to stomp hard on the ground above the target and/or swinging over the target with the coil in different directions.

 

[Uncle Willy]

Manually just gives a finer tune, especially in real nasty ground or gold bearing areas, and a lot of oldtimers don't feel like you're doing it right unless it's done manually. On the 2500 there is a wide spread on manual adjustment and you can tune it negative or positive according to the ground you are hunting and what you are hunting for.

Bill.