Ground balancing

[dirt lizard]

Is there any way you can tell you ground balanced your machine correctly since nothing shows on the VDi

 

[Rick N. MI]

If you ground balance pumping the coil up and down you will hear the threshold go louder and quiet as you lift and lower the coil. When the threshold goes quiet up and down it's balanced. I usually then lock the ground balance because most areas I hunt are full of iron trash. I find a quiet area and ground balance like this.

Rick N. MI

 

[dirt lizard]

Thanks rick next time I'll listen for the sound which I did'nt .

 

[Aarong81]

Also, you can find a quiet spot on the ground and squeeze the trigger which puts it 'all metal pin point' and while squeezing the trigger lift the coil off the ground. You can also try the opposite, with coil 8 inches off ground squeeze trigger and lower coil to the ground. There should be little or no change in the thresh hold when balanced correctly. The hard part is finding a clean spot with no iron or heavy mineral. With the 300 you only need to move the TRAC switch to GROUND, pump the coil over a clean spot a few times then move the switch to LOCK. As far as 'checking' it, Just trust in the detectors GB ability and re-ground balance more often if you think it is off. The method of 'checking it' is MUCH less error proof than the detector is about setting it in the first place. So your more likely to get a false "check" than a false GB.