Why is nulling a bad thing?

[WV62]

It seems that some are saying you need to run the E-Trac in a way that it will not null out. It also seems that the nulling is a product of the disc pattern so a completely open pattern (all metal) would be the way to go.

Yesterday I was hunting using small wire flags to grid off my hunting area and I noticed when the coil got close to the wire flag the detector would null out. So I put a dime on the ground near the flag wire and it was picking up the dime just fine.

Just looking for better understanding.

Ron in WV

 

[utmike]

I tend to look at nulling in a couple of ways...

When running high sensitivity in highly mineralized soil, I get a lot of nulling that tells me I might be running a little hot (not optimal) for conditions.

Secondly, knowing there is iron (by nulling or running an open screen)around can be a good sign of past activity in sites such as plowed fields, forests, etc... and may help you zero in on a search area.

Lastly, extremely deep coins that don't necessarily produce a tone or ID, can trigger a "bump" in your threshold audio to the trained ear (and hunters way better than me).

Hope this is accurate and helpful.

Good luck!

 

[WV62]

utmike,

Running to hot never crossed my mind would cause nulling. I will check for that my next trip out.

As for those deep coins, sounds like I may want bump the threshold up a tad.

Thanks for the tips, I am always looking for ways to get the most out of my E-Trac.

These little understandings really add up once you start to understand machine.

Ron in WV