I have the Garrett AT PRO and my brother wants one too. I know I can change to one of four frequencies but will that be enough to cancel out interference from another ATP?...Or should I just give him my AT GOLD?
No problems at all, just use Freq shift if you get interference. If you get around a high end Minelab and get interference, ask them to noise cancel the Minelab.
My & bf hunt together with our ATP's, and seems like there's only interference when we are closer than 6 feet or so, if we don't change to different frequencies.