Martyn 2

I’ve been playing with this for a while.  I’m still trying different tweaks but this version works really well on both pasture and ploughed. 
Use this program with the XY screen:
Start with Prog 6 Deep, and save to a spare location

Discrimination:  -6.4
Tones:  3 Tones – 200, 200, 891  Tone Break  10
Sensitivity:  94
Frequency:  28 KHz
Iron Volume:  2
Audio Response:  5
Notch:  0
Ground Balance:  Manual 88