more Fisher F70????

[steve2010]

Hello everyone I just got a Fisher F70 today. I took it outside with 11" DD coil and when I turned it on it started chattering, Well there are power lines right above me so I hit frequency shift button and it still chattering so I turned threshold to -3 and it stopped then I turned sensitivity to 85 and disc at 10 and notch 1 all chattering stopped but not getting a hole lot of depth. Can anyone tell me a good setting when right under power lines with the F70 11" dd coil setup also can anyone give me any good setting's for coin shooting were there's no electrical interference??

 

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[Canman]

Do the factory preset .With the machine off push and hold menu and ground grab down together while holding them turn the machine on hold the buttons for 3-5 seconds when u release them FF will show .Only work with the sen on your first couple hunts ,if it chatters move sens down.Move tones to 3H if u like .When adjusting the sens from the factory setting run it up till it chatters back it down about 5.