Just got Fisher F70 got few questions???

[steve2010]

Hello everyone I just got my F70 today and I took it outside to do some air testing wow! it gets some depth on those coins,But it seems to jump a little I have a penny on the ground it jumps from zinc to pull tab?? is this normal? then I had a quarter jumped from quarter to 50+ and different number? Is this normal in air testing? Will it lock on coins when they are under ground better then air testing? please if anyone knows let me know I'd appreciate it.

Thanks Steve

 

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[Canman]

Yes,yes and yes . Do not air test the F70 .How can u ground grab air .Wait a minute I'm being rude .The F70 is a amazing machine .Read the manual read it again,go to fisherlabs.com watch the videos .Grab your machine hang on tight because u are in for a ride.Take your time learning the machine it will be worth every minute of your time .Leave it at factory presets the first few times out .Then start working with the sens only.When u get that down ,your well on your way .