Do the #s change with coil change ?

[HouliSR]

When I change from the 11" dd coil on an F4 to a 4", will the numeric values of coins etc. change ????

 

[Lakota]

It can happen, in my experience it is very minor with the factory coils. The one thing that jumped out to me with an after market coil was a couple ground balanced to a lower number then my factory coils would for the same site, but didnt seem to mess with things that I could tell.


Lakota

 

[G.A.P.metal]

Wave a quarter in front of each coil and see for yourself .
Gary

 

[MarkCZ]

In all my cases I've seen very little air test coin ID numbers change, but!
Depth reading seems to change, and
Ground balance settings to be the most effected.

Mark

 

[HouliSR]

I hate to sound like an idiot, but I have seen some posts ( on other unnamed sites ) that had me wondering if ordering the 4" coil would require remembering a new set of numbers.
Sitting in the house, waiting for the weather to improve, gives me too much time to think about all the negatives I might run into when I actually get back out to using my new F4..
I promised myself that I am going to get out more, and have researched a few locations to hit in spring. If I can, I want to educate myself on how to interpret VDI readings quickly, and then spend more time listening to than looking at the signal.... Does that sound like a plan???

 

[Charlie P. (NY)]

I run an 11" (stock) DD coil and a 6.5" elliptical/concentric coil on my F-75. Both Fisher products. The display numbers are consistent for coins.

 

[still looking 52]

Depth reading was the only difference I saw,the smaller the coil the less depth it would show.