11 in d.d. coil question on gamma

[jimmy clark]

h0w much better is target seperation with the 11 dd then the stock 8 in. coil?

 

[Darkflight]

I'd have to say little to none. The main advantage is the lower edge of the detection field is much wider at depth. That has allowed me to get better coverage on big areas. But it has a drawback as the bottle caps will start sounding like quarters. You can use a technique called "edge pass" where it grunts iron when the tip of the coil passes. Other than that it is a great coil for good depth & that broom sweep of a detection field.

Target ID & depth readings were not affected. If anything the depth is more accurate with the DD.

When using the DD I never use disc higher than 22 & usually 0. That way the caps will grunt & deep iron is also culled out very well. BTW the typical cap "grunt" is 39 & then it's high 80's or 90's...Fast sweeps will also break up the signal sooner than a coin. I can attest to 9" with a repeatable signal on a dime/penny in good soil with both coils.ID gets iffy after 4 but it seems to read better by after pinpointing do a fast sweep directly over the target & it samples fairly accurately even deep.

 

[jimmy clark]

thanks for the info. just got my gamma on thursday, took about it out on friday, an have a problum. its seems theres a pinhole in the lcd screen. an a wet spot is there.it started abou two hours after i started hunting.it was about one eight in in diameter, the it spread to one half inch.ive never heard of this happining before.