Ground Balancing on the 705

[Crash67]

with the 9" 3 KHZ coil I run tracking and when I check it the numbers are usually between 5 and 8 I am in southwest Iowa i always here numbers like 28 or 30 when I here guys talking about ground balance so is something wrong with my machine or am I doing something wrong

 

[Old Longhair]

You're only doing something wrong if you have Beach Tracking turned on. Is the umbrella icon showing? If not, then you have hotter soil conditions and a DD coil would be a distinct improvement. If so, then turn it off and check again, as Beach mode will tend to be significantly lower by design.

 

[mapper65]

I doubt that you are doing anything wrong. In general we all know that soil conditions can be drastically different from state to state. But I think we often overlook how different soil can be even over a very short distance.

Ground balance is one of those things that can drastically change over a very short distance. I believe that when you talk about soil there can be a general statement about soil composition in a given area. When I goto Western Maryland I notice very red soil and in my area I never see that type of soil. From a color standpoint we see brown and sometimes even coal black soil which are two different things when talking about mineralization. I think there can be a general reading from area to area but as far as an exact reading for an area, I don't believe that is possible. I used to auto ground balance a lot and I would always be around the 28 mark, plus or minus. The last few years I've found myself using ground balance tracking more often and when I do a quick check of what my ground balance is, I'm always surprised at how far away from that 28 reading that I may be at times. I've seen 12, 8, 4 and also my standby number of 28.

I have to say that my finds have increased since using ground balance tracking and I really contribute that to ground balance tracking possibly managing ground balance a little more accurately than simply doing one quick auto ground balance when I get to a site and maybe one of two more over a few hours of being there. I don't believe that ground balance tracking is right in every situation or even auto ground balance for that matter but I'd say you are probably not seeing anything out of the ordinary.

 

[Digger 45]

I believe that the ground changes with every step and with ground balance tracking it keeps up with the right balance as you move along. This is a great advantage over a fixed ground balance. If you manually ground balance and move i will guarantee you that each time you move and rebalance you will get a different number.

With different soils, tracking should be a real positive for metal detecting.

 

[Mark in S.E. IA]

If those are the numbers you see most of the time then I would say that's normal.

I've MDed all over IA except for south west IA and I see ground balance number from 8 to 15 most of the time.

 

[Crash67]

Ok I did some "Bury" testing today ok at 6" a silver 64 quarter is invisible to my 705 at 4" it is there but not a solid signal but a choppy scratchy signal at 3 1/2 it is a solid clear signal and a 44 on id ,a silver dime was pretty much the same result I had sensitivity at 20 could not go any higher without getting unstable, ground balance tracking was on, I tried coin levels 1 2 and 4 and all metal. So if you take into account halo effect how deep do you think I would hit these targets or is something wrong with machine or coil Help please I dont think 3 1/2 inches is a good depth for a freshly buried quarter
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[Digger]

I can hit a quarter at 7 - 8-inches in the dirt around here. And I can run my Sensitivity nearly to the max. If you are doing an Auto NC before you detect, and you are in Tracking, I'd suggest you check the area with the stock 7.5 kHz coil to see how it behaves. There might be something wrong with the LF coil. JMHO HH Randy

 

[Crash67]

Thanks Randy I will do the same test in the same spot with the factory coil