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15" Ultimate Spiral DD Coil

jimmie

Member
Anyone using the 15" Ultimate Spiral DD Coil coil for civil war relics? I am using the 15 x 12 Commander DD factory coil now and have read by one person that the 15" Spiral Coil rejects iron better than the factory coil ??
 

filternozzle

New member
jimmie said:
Anyone using the 15" Ultimate Spiral DD Coil coil for civil war relics? I am using the 15 x 12 Commander DD factory coil now and have read by one person that the 15" Spiral Coil rejects iron better than the factory coil ??
I detect in the UK for coins and artefacts in quite mild soil. I have the 15" Spiral DD, it is a decent coil but on the heavy size when compared to other coils of similar size. I cant say I found it any better at rejecting iron than the stock coil, if anything, marginally not so good. However, this may be down to using different soil timings, I haven't carried out a direct head to head comparison. The other point to keep in mind is generally the larger the DD coil the deeper it will discriminate.
 

Tony

Member
Great coil.......this is my goto coil unless in tight areas with loads of rocks and bushes. Very sensitive and punches deep !

Tony
 

Marc in Va

New member
Me and my 2 hunting buddies all use this coil relic hunting and love it. My observations are that I do seem to dig a few more nails but that is far outweighed by the extra depth I am getting. Another observation is that this coil seems to be more stable. In head to head comparison my buddies 15" Ultimate Spiral DD hit stronger on super deep bullets than my Minelab 18"DD. I bought the 15" Ultimate Spiral DD the next day!
 

filternozzle

New member
Marc in Va said:
Me and my 2 hunting buddies all use this coil relic hunting and love it. My observations are that I do seem to dig a few more nails but that is far outweighed by the extra depth I am getting. Another observation is that this coil seems to be more stable. In head to head comparison my buddies 15" Ultimate Spiral DD hit stronger on super deep bullets than my Minelab 18"DD. I bought the 15" Ultimate Spiral DD the next day!
Interesting that you have found the 15" Ultimate Spiral hits stronger than the 18"DD Commander coil on deep bullets. Just because it hits harder doesn't mean to say it will go deeper though. I will be out with the GPX within the next 24hrs and will do a head to head with these two coils. The targets I am looking for are small thin hammered silver pennies which are low conductors. I'll post my findings on which comes out best on actual depth in the ground.
 

filternozzle

New member
filternozzle said:
Marc in Va said:
Me and my 2 hunting buddies all use this coil relic hunting and love it. My observations are that I do seem to dig a few more nails but that is far outweighed by the extra depth I am getting. Another observation is that this coil seems to be more stable. In head to head comparison my buddies 15" Ultimate Spiral DD hit stronger on super deep bullets than my Minelab 18"DD. I bought the 15" Ultimate Spiral DD the next day!
Interesting that you have found the 15" Ultimate Spiral hits stronger than the 18"DD Commander coil on deep bullets. Just because it hits harder doesn't mean to say it will go deeper though. I will be out with the GPX within the next 24hrs and will do a head to head with these two coils. The targets I am looking for are small thin hammered silver pennies which are low conductors. I'll post my findings on which comes out best on actual depth in the ground.
Was out with these two coils and on my ground which is NOT highly mineralised, searching for low conducting thin hammered silver pennies I found the Commander 18" to be my preference, it got the targets better and overall the coil was quieter than the 15" Ultimate Spiral. Having said that, both coils performed very well. But on the day, on my soil, for small thin low conducting hammered silver coins, the Commander 18" DD had the edge over the 15" Ultimate Spiral.

The deepest coin at a measured 12". Silver Coin 16mm diameter, varied in thickness but the thickest part 0,5mm
 
Ok I have my stock gpx coil ,,I hunt hot to med ground in Va Md and Wv ,,so what coil to buy the larger 18 inch Commander or the ultimate spiral weight isn’t a concern deep relics ,, colonial coins are Thanks
 

filternozzle

New member
jimmie said:
Anyone using the 15" Ultimate Spiral DD Coil coil for civil war relics? I am using the 15 x 12 Commander DD factory coil now and have read by one person that the 15" Spiral Coil rejects iron better than the factory coil ??
I hunt in the UK - my experience is the 15" Ultimate Spiral DD does NOT discriminate better, in fact quite the opposite. It is still a very good coil though. A little on the heavy side at 3lb 1oz (1.392 kg)
 

anbenson

New member
I can't say how the 15 inch spiral DD compares to the 18 inch commander DD. But I do have a 15 by 18 SEF coil I've compared it to. The SEF is less sensitive to small junk which is good for relic hunting, but it's also not at deep. I would say the 15 inch spiral DD gets about 2 inches better depth and has a sharper signal on deep targets. I do feel like the SEF coil has a little better iron discrimination though and is 300 grams lighter.
 

skywalker

New member
Hi Jimmie
I like the bottle (nice) my 15 " came today .Do you have a link for registration for detech coils? No answer from the dealer yet
 

skywalker

New member
skywalker said:
Hi Jimmie
I like the bottle (nice) my 15 " came today .Do you have a link for registration for detech coils? No answer from the dealer yet
No problem you use your receipt when you bought it talked to one of the owner this morning very nice brother::clapping:
 
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