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I'm wondering about how reliable the Ground Setting feature is on the E-Trac? During my hunting I've noticed that the mineralization in this area jumps all over, sometimes every few steps. I'm not really confident that my machine is ground balanced anymore. I have the manual for the E-trac and I'm wondering how often the E-Trac Ground updates. I understand that the Suggested Sensitivity is used to determine how hot the soil is but other than (Neutral or Difficult) are there other ways to control the Ground setting? I'm thinking my area calls for a machine with an automatic ground balance. Sure would be a good excuse to get a new machine.
Thanks for the input on the automatic ground balancing. Spent a few hours today in a heavy mineralized area. (F-75 with GB = 89, fe3o4 = .3) Found some clad and one wheat, mostly shallow. Every time I used the FastGrab it was always a few numbers off when I started. Got to the point where every time I found what I thought was a good target, I would FastGrab and check it again before digging.
Maybe there are some readers out there that have the E-trac and use it in ground this hot. I'm interested to know how the E-trac does? Do you wind up with a real low Suggested Sensitivity? With the GB value bouncing around so much, would Auto (+) would be better depth wise?
Also interested if a modified E-trac model is around the corner or maybe the next new model? The 1942 wheat I found today is one of the oldest coins I've found so far here in WY. An 1865 nickel three cent piece is my oldest but found it in Mich. with my XLT. That's if you don't count the 1700's era Chinese coin I found there. I'm hoping to get back to recovering some old stuff. Maybe something like the E-trac is what I need because I'm sure there are old coins around here just waiting for me to find them.
Greetings guys,
My name is Todd and I am a Minelab dealer in Texas. I live on a solid granite dome, lots of black sand and other minerals. It was hard at first, but you have to learn to trust the auto sensitivity function on the E-Trac. I hope this picture attaches. I was running my detector on a burnt down home site. The ground was bad, very bad. In the picture you will see my auto sens. was running at 1. The display is showing FE 9 CON 41, I had just dug a 1996 .50 coin at about 2 inches. I was running deep off, fast on, trash high and ground difficult with auto sens. on. I was using one of my own patterns for American coins. The reading wasn't perfect is should be around 12/47, but it still sounded good. The E-Trac was operating at its optimum setting for the ground it was reading. I could have set it to manual 20+, but on that ground it would not have been the best setting. At that site I never got a reading above 12 on the sens. Did I loose depth? you bet, but I didn't miss any coins in the ground that my machine was reading. Its a great machine you just have to trust the programming.
Why not use ALL Metal on the F75. Then your Detector will not be affected by heavy mineralization at all. Just dig nothing under say 18. Dig all repeatable each way targets over 18.
True, but you will become fatigued quickly, getting a pian in the neck from constantly looking at the sceen. I used to try that with mine, before I sold it and went with the E-TRAC. I think that is the way to use the F75 in places that no longer produce in disc or 2+ ... but you are right, it works! That way you will find those targets that the F75 has been telling you were iron because of masking.
Wow! I'm glad I asked for advice. I honestly didn't know that All Metal on the F-75 was unaffected by ground mineralization. Maybe now I'll be able to get down to those older targets.
