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GTI-1500 double D coil
- Thread starter joejoe7us
- Start date
I use the DD coil and love it on my 1500. I hunt a lot of iron infested relic sites and the DD is great on SEPERATING a good target from iron. You have to slow your sweep speed down and maybe check your target from different angles. I can't say for sure if there is a depth difference. I suppose at a clean site with little trash your stock coil may go deeper, but for most of my sites the DD rules. Txquest
Uncle Willy
New member
It doesn't detect any deeper than a concentric of similar size excepot in highly mineralized ground. I have a field test on Garrett's 10x14 DD over at losttreasure.com
Bill
Bill
Bill
Bill
Mick in Dubbo
New member
I love using the 10x5 DD coil. It's tones are more animated than with the standard coil.By that I mean that there is a greater variation in the width of the tones, which makes telling different targets of the same conductivity easier to tell apart. Anything from screw cap and bigger gives a fully rounded tone, while targets that are smaller, like coins, give a size proportionally shorter tone. You do need to whip the coil over the found target though to hear it though.
The recovery speed is also fantastic. I used this coil on an utterly crown cap infested site 16 months ago and pulled up over a $100 with it in a single day. The standard coil wouldn't have had a prayer of working at all there.
Mick Evans.
The recovery speed is also fantastic. I used this coil on an utterly crown cap infested site 16 months ago and pulled up over a $100 with it in a single day. The standard coil wouldn't have had a prayer of working at all there.
Mick Evans.
Oh yeah, that 5"x10" double "D" is my favorite search coil on any machine.
I like the 10"x14" as well but it's HEAVY. I need to use a bungee with that one.
Yeah, a double "D" search coil will only give better depth in highly mineralized ground as compared to a concentric. The main benefit of using a double"D" searchcoil is that it covers more ground at depth than a concentric search coil. Ground coverage at depth is about the same from toe to heel of a double "D" search coil, where as a concentric search coil's detection pattern goes down in a cone shape and only covers an inch or so at depth.
Here is a link to a Garrett spec sheet on search coils that should explain it alot better than I ever could.
http://www.garrett.com/hobby/hbby_searchcoil_tech_sheet.pdf
Happy Hunting!
I like the 10"x14" as well but it's HEAVY. I need to use a bungee with that one.
Yeah, a double "D" search coil will only give better depth in highly mineralized ground as compared to a concentric. The main benefit of using a double"D" searchcoil is that it covers more ground at depth than a concentric search coil. Ground coverage at depth is about the same from toe to heel of a double "D" search coil, where as a concentric search coil's detection pattern goes down in a cone shape and only covers an inch or so at depth.
Here is a link to a Garrett spec sheet on search coils that should explain it alot better than I ever could.
http://www.garrett.com/hobby/hbby_searchcoil_tech_sheet.pdf
Happy Hunting!