Ace 250 question-- how much coverage on stock coil?

[Gunnar of bradford MN]

on the Ace 250 whith the stock coil , if you have a coin at 3" deep whear on the coil will you first start to hear the beep and whear will it end so whats your coverage 4" or 6" or 9" and is it easy to center Im thinking of buying one

 

[david764]

Buy a Ace 250 and as far as where the coil picks the coin up is total useless information as long as it reads the coin because you are swinging the coil. You pinpoint the coin which you can do within the size of your fist.

 

[lazyaussie]

the coil is concentric so detects apparently in a cone shape so the deeper the coin the more to the center of the coil it will be so at 3 inch it will be 1-1.5 inch from the edge of the coil ??? but that's just a guess it also depends on a hole pile of other stuff like how fast you swing the coil over the coin-what angle the coin is in the ground-etc-etc-etc the list of variables are endless
the best method is to grid the area you are detecting e.g swing the coil slightly overlapping the last swing about 1-2 inch is enough i use this method to hunt old deep coins when hunting newly dropped coins 2-4 inch i don't overlap the swing.
hope this helps

 

[lazyaussie]

i meant 1-1.5 inch in from the edge of the coil not out the front

 

[Gunnar of bradford MN]

so it has 6" linear coverage at 3" so the number of swings you would need to move 10 feet forward would be 20 swings on my compadre i need about 40 swings

 

[slingshot]

Barring mineralization and target masking, it starts picking up closer to the outer edge the higher your sensitivity setting. The oval cone shape changes according to your settings, and many other factors. But under IDEAL (and where are those places?) conditions, it's near the outer edge. The cone shape is WHY I lift my coil high to pinpoint. It ends all the searching for the different methods of pinpointing with this machine-at this height the target is in the notch on the coil where it's supposed to be.

 

[Uncle Willy]

You have to remember that at peak depth your signal is only covering an area the size of a quarter not the size of the coil you see on the surface. Even if you overlap 50% you're still missing a lot of real estate at peak depth.

Bill

 

[david764]

 

[lazyaussie]

Bill that's why there's sill old coins in the ground even in the most hunted parks.

 

[Uncle Willy]

Yeah I've done two or three articles on that subject. People watch that coil as it's moving across te ground and assume they are covering that much ground.They are on top of the ground but down deep it's a different story. One has to look at it this way. The average coin will fit inside one square inch. If you are only hunting a ten by ten plot there are 14,400 square inches in that plot or 14,400 potential targets.IF your signal is only covering an inch or two of area at depth you can imagine how many targets you are leaving behind.

Bill