Posted by Bob Sickler
on 9/2/2009, 9:11 am, in reply to "Air OK, planted OK, detecting not OK"
67.250.121.76
Not being familiar with the detector named and you didn't mention whether or not the detector has pre-set ground balance or adjustable... I would suspect it might be a ferrite pre-adjusted ground balance for the (if it has) motion discrimination circuit. If you planted the coin in your own lawn vs. the park you took it to, there could be a lot more mineralization at the park. Sometimes modern or even older parks were landscaped using fill dirt and that could come from anywhere. What I'm saying is if the park ground is more mineralized than your test bed (and obviously air tests) it will pose a greater resistence to you finding deeper coins. It is also possible the pre-set ground sampling is wrong for American soils.
It seems like to me you have also hunted this park many times before and you might be exhausting the supply of coins in a given location. I know this sounds too simple but, try hunting an area of the park you have not tried yet or another location altogether.
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