Hi dray,
I did explain it, but I'll try again. You sarcasm would imply that you think we are feeding you mumbo-jumbo.
You can air test an Infinium against a non-ground balancing PI like the Sea Hunter. The problem is it proves nothing and at worst misleads people.
A pure PI like the Sea Hunter can get better depth than a ground balancing PI like the Infinium if there is no ground mineralization. My White's TDI and Minelab GPX-4500 allow me to turn the ground balance on or off. In air tests both will get more depth with the ground balance turned off. In ground with little or no mineralization turning off the ground balance can increase depth.
The Sea Hunter has no ground balance to activate, and the Infinium is always set to ground balance. In air tests or in ground with little or no mineralization the Sea Hunter will excel. As the ground mineralization increases, you quickly hit a point where the Infinium is on par with the Sea Hunter. Increase the mineralization more, and the Sea Hunter falls behind. On black sand laden beaches the Infinium will blow the Sea Hunter away. The Sea Hunter will also bang on hot rocks that the Infinium will totally ignore. So which does better 100% depends on the nature of the ground in which you are detecting.
When comparing units that ground balance against units that do not ground balance it is the nature of the ground that is all important and so it must be taken into consideration. Old style TR units do very well in pure white coral sands. But in mineralized ground they are pretty much obsolete compared to the current ground balancing VLF units.
So I air test them both and tell you the Sea Hunter air tests better. You have learned nothing but that if the ground is 100% free of mineralization then the Sea Hunter will probably have the edge. But such conditions are so rare as to make air tests worthless.
Air tests are like seeing how fast a sports car can go compared to a 4WD truck by jacking the wheels off the ground, flooring the gas pedals, and looking at the speedometer. In the real world the sports car wins on the highway and the 4WD truck in the mud bogs.
Oh yeah, it very well can make a difference as to which way you swing your detector. There are items that will hit left to right and not right to left. Working a saltwater beach parallel to the water can introduce false signals that can be eliminated by working up and down the beach.
Steve Herschbach
Water Hunting with Infinium
Nugget Hunting with Infinium