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My 6" 3kHz "Digger" Coil Review
- Thread starter Old Longhair
- Start date
First Post......
Uk resident....age 82 yrs.
Been 'tecking now for several years using white's coinmaster 3.(Then Whites spectrum for short period, but sold it).
Not done any detecting for about 7 years, due to circumstances, Recently purchased Minelab X-Terra 705 came with 10" Round DD 7.5kHz coil.....so far used the X-Terra705 once, a little bit daunting, not knowing if it was set up correctly.
Opportunity now arising to get out more.......First major outing to be on the beach ....dry / wet sand between high and low water tide marks .......two questions...
a) Do I need to be in the beach mode ( umbrella Showing ) on the dry sand ?
b) Would I benefit from purchasing a 6" round DD 3kHz "digger" coil.?
Suggestions welcome
Uk resident....age 82 yrs.
Been 'tecking now for several years using white's coinmaster 3.(Then Whites spectrum for short period, but sold it).
Not done any detecting for about 7 years, due to circumstances, Recently purchased Minelab X-Terra 705 came with 10" Round DD 7.5kHz coil.....so far used the X-Terra705 once, a little bit daunting, not knowing if it was set up correctly.
Opportunity now arising to get out more.......First major outing to be on the beach ....dry / wet sand between high and low water tide marks .......two questions...
a) Do I need to be in the beach mode ( umbrella Showing ) on the dry sand ?
b) Would I benefit from purchasing a 6" round DD 3kHz "digger" coil.?
Suggestions welcome
[attachment 263564 welcome9.gif]
Welcome Harry!
My thoughts on your questions are....
a) No, but in certain circumstances it can be useful to help "smooth out" transitions that can otherwise cause excessive falsing. Beach Mode is capable of minimizing the effects of both magnetic and conductive mineralization in the sand. When coupled with a Double-D coil, the negative effects of black sand can be greatly reduced.
b) It really depends more on what you're hunting than anything else. If high conductors like copper and more modern silver are what you're looking for, then it is the hot ticket. But, if gold and other low conductors like your hammies are sought, then a High Frequency coil might well be a better choice.
Welcome Harry!
My thoughts on your questions are....
a) No, but in certain circumstances it can be useful to help "smooth out" transitions that can otherwise cause excessive falsing. Beach Mode is capable of minimizing the effects of both magnetic and conductive mineralization in the sand. When coupled with a Double-D coil, the negative effects of black sand can be greatly reduced.
b) It really depends more on what you're hunting than anything else. If high conductors like copper and more modern silver are what you're looking for, then it is the hot ticket. But, if gold and other low conductors like your hammies are sought, then a High Frequency coil might well be a better choice.
Thank you for your response Old Longhair, .....Think I will stick to the 10" round DD 7.5kHz coil that came with the 705 and see how it performs............Trying to run before I can walk !!!!!!! Just downloaded and printed Randy Horton's Understanding your X-Terra, looks impressive.
Excellent Harry. The book is brilliant, and so full of good readable information, that you should poke your nose into it after each hunt for a while. As you go, and questions arise, turn to the book for your answers.....they are likely in there. If not, then by all means feel free to ask here. We're all still learning, and this machine is far more capable for the money than most folks have any idea of.
team sidewinder
New member
My good man you are 82. You have my utmost respect and are an inspiration for being out there metal detecting.
In mild soil conditions I'd have to say "No."
In situations where soil conditions are more mineralized it can run as deep as the 9", with the added advantage of working in heavier trash situations better as well.
I like my 9", but like all authorized coils for Xterras it has it's place.
In situations where soil conditions are more mineralized it can run as deep as the 9", with the added advantage of working in heavier trash situations better as well.
I like my 9", but like all authorized coils for Xterras it has it's place.
What sort of GB numbers do you get with the stock coil, and what do you get with the 9" 3kHz?
With numbers in that range I doubt that you'll see any greater depth than the 9". Better separation yes, but not likely as deep.
If you had seen 30 or less, then you might get equal or better depth, but your ground isn't terribly mineralized.
If you had seen 30 or less, then you might get equal or better depth, but your ground isn't terribly mineralized.
I hunt in disc pattern 4 and seems to quite a bit of "blanking" at the sites I hunt ( mostly old house yards) This makes me believe the sites are trashy and that I might benefit from the separation of the Digger Coil sorry to be a bother just have to be sure i have a benefit worth the expense of the coil.Old Longhair said:
If you're experiencing excessive nulling, then either a DD configured coil and/or a smaller coil are likely going to be a benefit. The Digger is both. And since there is no 10.5" 3kHz coil, the Digger is the best option for a trashy site if 3kHz is the desired frequency.Crash67 said:
I'm about 80 miles from you. In our neighborhood, the 9-inch concentric will hunt "deeper" than the 6-inch LF coil. For folks like us in moderately mineralized locations, the smaller coil (IMO) is used for better target separation, not depth of detection. HH Randy
A new condition crown cap laying flat near the surface can sound good, but I don't dig many. Older bent or rusty ones I may find in the hole, but there's a coin in there too, otherwise I avoid them by audio response. I'm more apt to dig flattened aluminum screw caps in the pursuit of IH's, tokens, heavy 10K rings, and the like.