Surface Blanking Tests

[Cody]

I took some time to check the pros and cons of surface blanking. I wanted to check my own tests and also answer questions in my mine that were raised by other users. Let me say up front it does work but I wanted something more than just that so backed off till I had the time for more testing. It is most likely best if a user is interested to test this with his or her detector.

Take a pulltab and place it on the floor or ground and sweep the coil over the target observing the digital screen. As the coil is swept over the target slowly increase the distance to the target. The digital readings are solid and consistent up to about 6

 

[airfitter]

Cody, When using this set-up do you use a low sensitivity to (learn reject) the trash at the sight and then increase the sensitivity to detect? HH Ted

 

[Cody]

Yes, I like on site as the soil matrix for a site included. I use 1 or 2 in manual sensitivity and sweep a trashy area for the targets to be rejected. I then go to edit and clean up the non-ferrous side of the screen. I have pulltabs, tails, etc, stored in an S slot that I have saved from a pile of them then add that S slot to the pattern. There are several way to construct the pattern but this works nice. I guess I should post again that shallow targets, depth depends on which box is used to learn, are rejected. This can be dangerous if there is a good target in that 6" range as it will be rejected. I enjoy using this in heavy trash on those lazy days when I don't want to do a lot of digging so pick through and find a likely real deep target and go after it. I figure a lot of those have been masked due to the surface trash and passed over due to all the problems of working trash.