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Offline Dmoore58Topic starter
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« on: June 25, 2011, 05:10:47 am »
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Was trying out my safari this morning for the first time out in the front yard. A little confused about something. When you get a good strong signal that for example shows up as a coin. Should you dig without being able to repeat the signal ? I've gotten strong signals that I haven't been able to repeat and signals that I have been able to repeat 3-4 times but then "lose" it and not be able to find it again. Hope I am explaining this adequately and you can understand what I am talking about. When I "lose" the signal I don't think its nulling out cause I'm maintaining my threshold. I Really don't want to dig unless I am certain something is present, my dirt is just too much hard packed red alabama clay and rock. Input really appreaciated

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Offline Renegade7
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« Reply #1 on: June 25, 2011, 06:55:39 am »
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I had that same problem...sometimes still do, try to adjust the sensitivity. seemed to work well for me.

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Offline Dirt Devil
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« Reply #2 on: June 25, 2011, 07:31:47 am »
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Quote:Posted by Renegade7
I had that same problem...sometimes still do, try to adjust the sensitivity. seemed to work well for me.


Running your MD to hot can cause alot of falsing...
Try lowering your gain-sensitivity,then practice practice and practice....The more you work with the MD the more
comfy you will become with it and what it is telling you.
Once you become comfy with the MD you then will be able to turn up the gain and better understand what it is saying.
Most MD with any real power will tend to do this with to much power,but power is what you want...You just have to
learn what the difference is between falsing and a good target and the only way to do it is practice.Learning the false-good
signals is what will give you the edge over others simply because you are probably searching deeper targets than what others
are..
Conclusion being- learn your MD and what it is telling you.Once you have done this you will be able to crank that baby up
and look out,tell everybody to stand back cause this is one hot machine and you don't want anybody getting burt.... Cheesy


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« Reply #3 on: June 25, 2011, 07:56:23 am »
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All the above sound good to me too.

Once you do get a handle on it , Dig every repeatable signal no matter what the detector thinks it is.

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Offline redrain22
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« Reply #4 on: June 25, 2011, 09:25:47 am »
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i dig every hole except shallow iron

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« Reply #5 on: June 25, 2011, 10:26:34 am »
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Don't know if this applies to all detectors, but when working in grass, and I get an iffy signal, I step on the area a few times, then see if the signal changes.
Have had signal move, get stronger or weaker and more broken, just by stepping on the target area.
I originally tried this to get closer, but found that it has made a bunch of difference many times, even at a consistent height.
I don't dig stuff that doesn't give me beeps on both sweeps unless I want to dig iron and cans (or nothing) Shocked   

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Offline Dmoore58Topic starter
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« Reply #6 on: June 26, 2011, 12:51:17 am »
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Thanks everyone for the input. Lot of good advice here. I knew there was a reason why I joined this forum   

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Offline DJP
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« Reply #7 on: June 26, 2011, 02:01:37 am »
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Nice to hear that good advice.

Regards

DJP

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« Reply #8 on: June 26, 2011, 07:20:27 am »
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Now I'm a relative new md'er so just my  opinion.
I've noticed a good ping sound on a sweep and then trying from another direction a dull sound. Several ended up being coins. I think its due to the angle the coin or object is. Sweep one way you get more face of the object, swing the other way you get an edge.

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« Reply #9 on: June 26, 2011, 09:46:07 am »
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  Dmoore58, Hello All the advice sound good. Especially that about sensitivity. 
I had the same problem when I started out a year and a half ago. I started with a ACE 250 which is very simple to operate but it took me about 30 hours of operating time before I understood "falseing" or ground chatter as some call it. I was turning up the gain when the machine went silent or I wasn't finding anything. Big mistake if there are lots of targets in the ground or if there are power lines near by. You actually find less if the machine is constantly falseing because everytime the machine processes a signal either real or false, there is a delay before it can process another and you will pass right over good targets. This was especially true for the ACE because its recovery time is relatively slow.  My rule of thumb is to use as little gain as possible to detect the type of target I'm looking for. For example. Coins buried at 3-4" are detected at a gain setting of 25 out of 100 on my F75. If I want to detect coins deeper than that I can crank it up but somewhere along the way It starts picking up electrical interference or if there is no electrical inteference and the ground is trashy the big trash targets will cause the machine to go into overload. On the high range of sensitivity (75-99) you start running into another problem. The F75 starts responding to slight variations in the ground itself. This ground chatter is a result of variations in mineralization in the soil.  I did a lot of 'garden' burial of coins, rings and other targets in the back yard before I figured out what the best paramaters were. It took more than a year to really get a good feel for my ACE 250. The F75 I'm still working on. gambol Cool

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