what are you trying to notch out, or in? tones? ground? I'm not sure what you are asking so far, sorry.
i use 12K a lot and nickels come in around 55 or so, so i am wondering why yours comes in higher?
I use full tones and it's pretty easy to hear the higher tones... 80 and above in 12K. that is where most of the coins show up. Try 12K and dig anything above 80 and see how you do. Then you can start to fine tune what you want to dig. Let me know how it goes.
i use 12K a lot and nickels come in around 55 or so, so i am wondering why yours comes in higher?
I use full tones and it's pretty easy to hear the higher tones... 80 and above in 12K. that is where most of the coins show up. Try 12K and dig anything above 80 and see how you do. Then you can start to fine tune what you want to dig. Let me know how it goes.