MXT–Coil Comparison Depth Chart (Air Test)

Although I wouldn’t recommend comparing different machines using “in air” depth tests, comparing different coils on the same machine would in my opinion give a very good comparison of the depth capabilities of each coil.Looking at the above figures its pretty obvious to me the MXT performs better “in ground” than “in air”, this is based on depths of finds out in the field, for instance the MXT fitted with the 14 incher found a hammered penny on rough plough at 11″ with a good strong signal, but would only get it at 10″ in air. The figures also show what a cracking little coil the 5.3 is, matching the 10″ X 5″ DD on three of the targets even though its only about half the size of that coil. In my write up about the 14 incher I reckoned it had a 2″ to 3″ gain in depth over the 9.5 stock coil, seems the bigger the target the bigger the gain. These tests were done after the machine was ground balanced and then the tracking “locked”, the gain was set to max (+3), discrim at 1.9, in fact it was set up exactly as I use it in the field, all measurements were taken while still getting a good two way signal using headphones.