I am confused. I own many pointers, and the 600(among several other detectors.)
I tested 5 pin pointers an hour ago, using the Nox 600. My tests comprised of simply swinging the coil outside in the yard over a 6" buried quarter, and then switching on my pointer at waist level. I got no chatter between these pointers:
I had my sensitivity on the 600 at 20, factory default, and I got nary one piece of feedback from the coil. I am however setup with the 6" coil, not the 11". I then proceeded to test with the 600 set full sensitivity, which was chatty without the pin pointer even on.
I got no added feedback with any of my pin pointers with that max sense. I thought I would go to 5khz, logically the lowest frequency should be the most trouble with crosstalk. I still got no interactivity.
Unless it is my use of the 6"coil instead of the 11" factory coil, I simply don't get interference at the basic length of the shaft while standing and reading a buried target, definitely not anything close to 10-20 feet. I even extended the pinpointer down closer toward the 6" coil and was impressed by the lack of tonal response.
I will plan a test using the factory coil later. I was surprised that I passed my tests so easily. Again, maybe it's the 6 inch smaller coil, but I did run it full sense and approach the coil as close as 2 feet, before it reacted to one of my pointers. NOTE: I run every one of my pinpointers to the edge of their stability, so they are maxed.
To be honest, I do remember that the F-Pulse had a kinda angry attitude with my coils, and that was prior to getting the Equinox or the 6" ML coil. If I had to give advice now, assuming you are using the larger 11" coils...buy the F-pulse or Tec-Point.
Garrett Carrot
Whites V3i
Detech X1
Pistol Probe(That is one sensitive unit)
Fisher F-Pulse