Air test.

[Born2Dtect]

I know the answer as I am a bit of an electronics geek. Post your answer in the poll and add a few comments. All are welcome. (Not includung PI units.)

Ed D.

 

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[hollowpointred]

nope

 

[jeff from east pa]

No an air test just gives you a good idea where your at on depth. soil conditions can make a big difference. but here's a formula I use and it's been pretty close. I lose around 2 inchs of depth from air to ground. so if I do an air test on a civil war bullet say 58 cal. and I pick it up on an air test at say 11 inchs then I'm good for 9 inchs. Its always worked for me.

 

[Mike95inNJ]

No an air test just gives you a good idea where your at on depth. soil conditions can make a big difference. but here's a formula I use and it's been pretty close. I lose around 2 inchs of depth from air to ground. so if I do an air test on a civil war bullet say 58 cal. and I pick it up on an air test at say 11 inchs then I'm good for 9 inchs. Its always worked for me.

What him said... I find the 2" difference air to ground to be the same for me as well.
HH, Mike in NJ

 

[moonshine]

only based on my experiences, i have to say YES (with conditions like i stated in the other thread i started ).

still wondering why many people say NO

 

[renegade_7]

Considering the soil, do not forget the benefit of the halo. On really deep coins, the halo helps the signal to be received, once the halo is disturbed, the reading is too; no halo on the air test!

 

[Blind.In.Texas]

No. I can pick a can at 14-18" in wet sand with a machine that only claims to grab objects of coin size at 10". I can not achieve that same depth in an air test. I think it gives a good base line to go by, but, the true depth capability of the machine would be best tested using soil. I know you know this. It's just my opinion.

The three digit ID, however, should remain very close between the air/field tests since our machines claim to be accurate for any given coin-sized object at the displayed depth. I think I got that right.

Laater...

 

[Youngladd]

I think Air tests are very useful, if you know what information your looking for. It can help you profile your detector. here are some of my findings, your results mary vary

I have tried this on several different BH detectors and found that I can get an extra 1 to 2 inches of depth by swinging the coil faster over the target then i normally swing. I discovered that with an air test and I proved it out in the dirt. If I swing at a certain speed and I get a repeatable signal and if I swing slower and dont get a signal, then I have a pretty good idea that it's a deep target. Then i perform a target profile. This was huge for me.

An air test will reveal the shape of the fields in different modes and I discovered that my pinpoint field was too wide at 0-4 inches and I would have to lift the coil off the ground to get an accurate pinoint on shallow objects.

In all metal, in the air and in the ground I discovered that some rusted iron objects produce a random coin result when the field aproaches near the object and produce a iron result when centered.

I also discovered that my pinpoint field is deeper than my all metal field, both in the air and in the dirt. but my pinpoint field is more conical than the all metal.

I have several other tests in the making, but my point is air tests are useful in profiling your site,detector and target.