Friday, August 3, 2018

8/3/18 Report - Air Tests and Why To Use Them. Large Cent and Foreign Coin Finds.


Written by the TreasureGuide for the exclusive use of treasurebeachesreport.blogspot.com.

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Two Large Cents.

In Florida you find a lot of foreign coins.  Here are a couple of British large pennies.  They are the same diameter as a US half dollar.

Two Large Cents.
As you can see, one is dated 1903 and the other, 1967. The 1903 has a heavy dark patina.

The 1903 might be worth a couple dollars since it is not in great condition, and the 1967 just a few cents.

I have found other large cents from the US and Canada.  It seems like it would make a nice start to a collection of large cents.  I like them better than a lot of other coins.

Hollywood Florida always produced a lot of Canadian coins.  The modern Canadian coins are pretty boring, in my opinion.

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Good Uses For Air Tests.

Before I begin with the proper uses, there are some ways that people commonly used air tests that should not be used.  Air tests do not necessarily provide a good measure of a metal detector's field performance, so they should NOT be used to determine the depth a buried object can be detected in the field or to determine which of two detectors will provide the best performance in the field.

Here are some good ways to use air tests.

- To learn the language of the metal detector.  Learn to recognize the different sounds and readings and what they mean.

- To learn how the metal detector responds to a wide variety of types of targets.  Learn to identify changes in the signal and readouts to different types of targets.   The choice of test targets is very important, and there should be a variety of the kinds of targets that are found in the field, including those that the detectorists really wants to find.  Use test targets that are the same or very similar to what you would most like to find and those that are likely to be the biggest obstacle.

- To learn how different modes and settings affect the detector's response to various targets.  For example, at what setting does the detector eliminate bottle caps and at what setting does the detector lose various good targets.  Settings like discrimination and sensitivity should be varied to observe how that affects the signal and readouts to a variety of targets.

To map areas of coil sensitivity.  Identify the area of maximum sensitivity and how much sensitivity decreases as you approach the edges of the coil.  Where under the coil is maximum depth obtained and how quickly does it decrease as you move out from that area.

I highly advise doing a lot of air testing.  Most people run out to the beach or where ever and hope to learn while detecting.  It's my opinion that spending more time learning to understand the metal detector would be time very well spent.

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There is still no storm activity in the Atlantic.  I'll bet that we get some storms before summer is over.

The surf is up a little to around two - three feet.  The wind is coming from the east/southeast.

Happy hunting@comcast.net
TreasureGuide