Finally got around to trying a hunt in TTF. Screen almost wide open, 1-1 thru 1-37 and 1-49 thru 1-50 blacked out only. Went to a small park about 10 years old, but was a neighborhood field between houses for probably 100 years before that, saw pics from mid 50's. I don't think this place has been hit much before just because it is so small and pretty hidden in a medium sized town with much better parks. Has to be something there though. Right? Well I swung for about an hour and never got a signal I wanted to dig. Was the first time I ever had to switch arms from fatigue because I got no digging breaks. Anyway, the low tones were almost constant. Had to turn down the headphones and the low tones became my threshold. There were high tones scattered in there but no decent signals that locked on worth a hoot. And I was going S L O W. Finally dug a couple beaver tails just to make sure everything was OK. Threw a dime down and hit it hard 12-45. I guess the area was just entirely full of iron junk. Maybe remnants of an old house? Is it normal for the low tones to be almost overwhelming? Is there a reason ,like maybe nulling interfering with signals, for not notching out more? I ground balanced a couple times and tried different sensitivities but same results. If this is all normal, I think I would like TTF in an area that is not so trashy, but I about went bonkers...