Coil hunting...good or bad??

Hey all....i have a garrett ace 250 and i was thinking about getting a new coil. I have been detecting for about 6 months.The coil on the ace is ok, but i think i need more depth, and i dont want to miss targets. I dont want to buy a new detector but i think im missing out. I was lookin at the 8.5 x 11 dd......is it worth it???  Thanks for any input....T.E.D.

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Time for school and I'm the student.
GD,how does turning off the discrim, help in getting better depth?
I have my md set that when I hit a coin lets say a dime I will hear a belltone ring.
Iron and most all other trash will simply be a standard beep and will register lower on the screen aswell.
When I discrim. out the iron and other trash items I will not be able to find that same dime at the same
depth as I would with the discrim set to zero,is this what your saying?
If this dime were 20 inchs down and I was running 0 discrim would I still get the belltone ring
or would it sound like all other metal,just a beep?
I live in the farm land of Indiana and if I do not discrim out some of the junk I will spend most of the
day digging junk.Bolts,nuts,broken plow tips and the list goes on.

                 V-burgh

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V-burgh and Nickel-n, the depth was in inches, not centimeters. An Australian 20c piece is the same size as the US half dollar. Be mindful that these were coins I buried to test the machine. I hired it from a local shop when I thought I was going to buy one. I'd still buy one but the import duties here drive the cost to astronomical, as you know, compared to prices in the US. My next machine will be a Fisher F-75. Nickel-n, I suggest you hire an Ace 250 before you spend the $500.00 to buy one locally. I'll buy my Fisher on my next trip to the US.

V-burgh, your discrimination builds a notch reject into the response of the Ace 250. If you could look at the notches that each metal item produces you'd have a whole row of downward pointing V shapes - this is a baby-talk style of description for those who are technically minded. Some of the notches overlap and one item can fall partly or entirely inside the notch of another. A prime example of this is the notch for a pop top and a small gold ring. The ring falls entirely inside the pop top notch so when you eliminate them, you also eliminate small gold rings. Because of that, setting up an iron reject notch can cause you to miss copper coins. The older the coin, the larger the halo. Also, during the use of a machine that has notch reject on, you will have moments of silence to keep from detecting that pesky thing you notched out. Recovery from that silent moment isn't instantaneous. The time will vary and as you move your coil along, you may have silenced it over a target you wanted to see.

Experienced detector users know this and curse every pop top until they remove that gold ring every now and again. In some cases, the notches for coins overlap just a bit and you can miss one that is not laying perfectly flat in the ground. You can also lose a great amount of depth from notching out your returns when an item has a halo of metal around it. Copper coins and iron targets can build up a halo of corrosion around them which look identical to your machine.

Just try it without discrimination for a few hours. Dig every single target and see if your machine tells you the truth 100% of the time. I know you will be surprised at how much you would have missed. You'll also see your keeper bucket filling up faster. After you try this, you'll be scheduling time to go back over all those areas you now consider hunted out.

Posted on: December 29, 2010, 09:18:16 PM

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		Quote:			Posted by v-burgh
	I live in the farm land of Indiana and if I do not discrim out some of the junk I will spend most of the day digging junk.Bolts,nuts,broken plow tips and the list goes on.

You only have to dig it once, mate. Think about all the things hidden very close to those things or even below them. How many tiny treasures have you missed? I know, it sounds like drudgery but the first time you pull out a large cent or a Barber coin after you remove a bolt, you will be dancing.


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