gti2500 question

[BOOTY SEEKERS IA]

I have a question about frequency on my gti2500. What is the benefit of adjusting the frequency? So far I have had some success pulling old coins but I wonder if I am missing something.

 

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[outdoors]

use it when you have interferance with othe detectors near by or some power lines

 

[BOOTY SEEKERS IA]

Great, thank you.