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Ground balance and frequency coming in wrong

magic

Member
Just wanted some other peoples opinion on this. Handyman uses a program that is like mine. At the DFX hunt, I was with him when he dug the really nice merc that was deep. He told me then that it came up with the 22.5 Hz band dominant. (the blue band). As most of us know, coins with the exception of zincs come up in the green band. (2.5 Hz)
I couldn't figure out why that one coin he found did...until yesterday

I was out hunting and I had my D2 coil on. I walked over to a spot that I knew I could get a clean ground balance because I have been there before. After the ground balance I walked about 20 feet to my hunting area which is a little trashy but not bad. Every now and then I would get the good sound, #s in the 70s but when I pinpointed in was in the blue. I sure sign to me that it is a bottle cap or other junk. I decided to dig one that came in really good sound and at 78 at four inches...it was a dime. ???? I checked it on the ground and some other change I had in my pocket and all my coins was coming up with blue band dominate. I went back to my truck thinking it must be something in the coil and got my 10x14 coil. Did the same thing and walked back over and all the coins tested in the blue band dominate again....

I was puzzled. As most of you know, I use lock-track. I ground balanced where I was standing and all the coins went back to testing in the green like they should. Then I went back to my truck again and switched back to the D2 and ground balanced where I was finding the coins and it also went back to testing coins in the green. I called Handyman to let him know of my findings and we decided in had to be where I ground balanced the first time was not a good spot, Even though it tested clear of anything when I swept it. After I got off the phone with him, I decided to try another test. I went back to the first spot I ground balanced and did it again. Pulled out a quarter from my pocket and it was testing in the blue again. I had to find out.... I dug a big hole where I ground balanced and I did run into some coal and ash and then about 6 or 7 inches down.....nothing! and I mean nothing...no dirt! It was right under a big groundhogs hole. Right in the middle of his tunnel. I had a hard time filling because there was about 7 inches of dirt left to fill so I got some from the creek bank. He will probably just dig it out again.

So, I guess what I am trying to say is make sure you get a good ground balance and maybe make sure your coins are coming in at the green 2.5 Hz mode. Apparently not having a good ground balance will affect the band reading and this is what most of us go by with the V3.

Seems to me that not having a good ground balance would effect the vdi #s but not the frequency that hits on it the hardest.
Is there any other thoughts on why this could occur?
 
Interesting scenario Magic. I have to assume that you were in Tracloc. Wonder if Autotrac would have caught the bad GB and corrected the shift. At least now you know why there was not anything in the ground, (not even minerals), where you ground balanced. :tongue:
 
The construction site Ive been hunting has the same situation.The first foot they dug is top soil with a red and gray/black clay underneath it.In the clay you cant get real good depth with any setting,but when you do get a signal,you never really know what its going to be.Wheats will hit as low as the high 40s and the one silver dime I found in the clay was completely black,came in at +64 and hit the hardest in 7.5.Strange stuff that clay.
 
Larry (IL) said:
Interesting scenario Magic. I have to assume that you were in Tracloc. Wonder if Autotrac would have caught the bad GB and corrected the shift. At least now you know why there was not anything in the ground, (not even minerals), where you ground balanced. :tongue:

Yes I was in tracklock. I assume that auto tracking would have caught this and fixed it but, In my soil here, It stays pretty consistent so I don't use it. I may have to start using it but tone it down some. I know in the V3i, tracking was adjusted at a better rate in stock programs. Can anyone tell me what the difference is in the settings and what I would have to get mine set at to act like the stock V3i?
Also, My vdi #s didnt seem to be effected like in BHNuggets case, just the frequency that it hit on the hardest. Can someone explain this in common terms?
 
Magic,
The tracking has tighter limits to try to get it to zone in to where it needs be and not to have such a large offset when done balancing. It's slower, maybe that's why it
 
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