Whites gmt mini double dd shooter coil

Hard Prospector

Hero Member
Aug 29, 2012
974
1,386
SO CAL
Detector(s) used
SDC2300, Gold Monster, Sierra Gold Trac, GB2, the Falcon......and just as many drywashers
Primary Interest:
Prospecting
You should be able to increase the gain/sensitivity some without an increase in ground balance issues using the 4x6 shooter(over say the 6x10 goldmaster) Thats the simple answer without getting into the dynamics of loop sizes.
 

Jim in Idaho

Silver Member
Jul 21, 2012
3,313
4,684
Blackfoot, Idaho
Detector(s) used
White's GM2, GM3, DFX, Coinmaster, TDI-SL, GM24K, Falcon MD20, old Garrett Masterhunter BFO
'Way Too Cool' dual 18 Watt UV light
Primary Interest:
Prospecting
Yes...increased gain, and the ability to get the coil into smaller places between rocks and around obstacles.
Jim
 

Jim Hemmingway

Hero Member
Jan 26, 2008
788
1,615
Canada
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F-75, Infinium LS, MXT, GoldBug2, TDI Pro, 1280X Aquanaut, Garrett ProPointer
Primary Interest:
Prospecting
Small coils see less ground mineral than do larger coils… resulting in better bad ground handling performance, or otherwise being able to increase the gain as noted in the above post. This may be an overlooked advantage particularly when using high operating frequency units such as the Goldbug II or in this instance the White’s GMT. They also have less target masking issues…that is to say better target separation… and suffer considerably less from EMI than larger coils.

Small coils are lighter on the arm... can be a significant advantage over the course of a long prospecting trip.They cover less ground, but I think in many prospecting scenarios that is an advantage. And while small coils are less deep-seeking to a point, it is surprising how well they do perform in that regard. They are more sensitive to small nuggets, certainly enhance target pinpointing, and are more maneuverable in the field... as noted in the previous post.

Jim.
 

Hard Prospector

Hero Member
Aug 29, 2012
974
1,386
SO CAL
Detector(s) used
SDC2300, Gold Monster, Sierra Gold Trac, GB2, the Falcon......and just as many drywashers
Primary Interest:
Prospecting
The 4x6 and 6x10 coils really do compliment that machine's abilities, if I take the GMT out for the day they both go with it. However, if considering the GMT 8x14 accessory coil for prospecting forget it.
 

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