Double D coil?

[geckokid]

What is a Double D Coil?

 

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[geckokid]

can any one tell me what the difference is between a standard coil and a Double D Coil?
I am new to the hobby.

 

[eagle77]

Not being the sharpest stick on this subject, but to give you a simple mans knowledge..here we go

A "standard" or concentric coil has a smaller coil inside a larger coil. The EM field is transmitted through
the larger coil and the smaller coil picks up the reflected signal from a metallic object.

A Double D Coil has a coil design that appears to be one D backwards and the other forwards, a transmitting signal travels through one coil and the other coil acts as a receiver. Then the 'receiver' coil become the transmitting coil, etc.

In my opinion I like the DD Coil for most hunting. I have a machine that has a 'standard' coil and use it for mostly clad hunting. The DD Coil has a faster response than the standard.

Hope this helps.

 

[Zincoln Miner]

coils have different copper winding patterns.different coils either discriminate better,see less ground minerals,cover more ground,etc.a dd coil is wire wound in a side by side d pattern,
and has a centralised heel to toe detection field.different coil sizes,and shapes are for
different tasks that the user determines is best for there site.

 

[Sandman]

A "standard" or concentric coil has a smaller coil inside a larger coil. The EM field is transmitted through
the larger coil and the smaller coil picks up the reflected signal from a metallic object.

A Double D Coil has a coil design that appears to be one D backwards and the other forwards, a transmitting signal travels through one coil and the other coil acts as a receiver. Then the 'receiver' coil become the transmitting coil, etc.

I would add to Eagle's thoughts by saying that the Concentric coil is deeper at the bottom of its field, but the DD coils field is more like a wiper blade than the Concentric's V shape. DD coils are better in mineralized ground too.

 

[artemis moon]

Isn't double D a bra size??

 

[jeff of pa]

A DD Coil sends a Signal into the ground
From the Front Center to the Back Center like a
Blade or Painbrush.



a Regular Mono Coil sends a signal almost like
an Upside down Funnel all the way around.



You get more Coverage per swing with less Lapping
of the coil needed with a DD Coil