Showing posts with label sony. Show all posts
Showing posts with label sony. Show all posts

Monday, May 18, 2015

5/18/15 Report - What To Do First When You Have A New Detector. Sunken City Discovered by Divers. A Versatile Camera.


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

Gold Ring Beach Find.

I seldom look at YouTube detecting videos but was bored the other night and had a few minutes to waste.  The first video that I looked at drove me absolutely crazy.

First, the video was made using a detector that had a very annoying signal.  It sounded something like a mosquito or maybe a cheap child's toy meant to drive a parent crazy.  I think detector companies should put more thought into how signals sound.

But the thing that really drove me crazy about the video is that the guy continued to show his meter as it jumped around as he passed the coil over one undug target after another.  It obviously was a very junky area.  I quickly got tired of watching the meter jump around.  I wanted to shout dig the dang thing if you want to see what it is.  He was detecting in a shallow creek that had little soil covering flat bedrock and could have easily exposed most targets in almost no time.

I felt a little better about the fellow when I found out it was the first time that he had used the detector.  I could then understand why he was spending so much time watching the meter, however he would have been much better off doing his first tests in a controlled environment.

If you don't have a clean area of ground you should find an area that you think might be clean, get some test targets and do your first tests there.  And before that you should do some air tests.

I've mentioned before that I wouldn't use an air test to see how deep a detector will detect a particular object in the field.  Detecting in air is different from detecting an object in the ground, but an air test still can be very useful for becoming familiar with a detector, its different settings and different signals.

If you want to learn more about your detector, start in an environment and situation where you can control most factors.  Don't start with a lot of unknowns.

And when you are ready for a field test, start with the simplest situation first and then gradually work into more complex situations.

For example, on a beach, start in the dry sand.  After you've got a handle on that, move to wet sand, and after that, maybe move into shallow water.  Go from simple to more complex.

As you've probably noticed, I do a lot of experimentation with detectors and objects.  I don't put much stock in what other people say.  I rather test something out and prove it for myself.  I guess that is just the kind of person I am.  I spent a lot of my professional career doing research and conducting experiments.

I've found some commonly accepted knowledge about metal detecting to be wrong.  I recently tested a detector coil that was supposed to provide excellent target separation.  It didn't.  You can't always go by the theory of things or what you hear or read.

I highly recommend doing a lot of air tests and tests in a test garden, as well as field tests with any detector, especially when you get a new detector.

The fellow that made the video I was talking about would have been much farther ahead if he had done  his first tests in a test garden rather than a junky creek.  I understand the temptation to run out and and see what you can find with a brand new detector, but for me I'd rather have some idea of how it works and what to expect before I take a new detector out for a field test.  If you just can't hold your britches, at least pick a fairly simple environment like a dry sand beach for your first tests, preferably one that has been pretty much picked clean.

Another thing I want to say is, Dig it! If you want to know what is causing a signal, put it in your hand, hold it and look at it.  When you really know how to use your detector and what it is saying to you without spending five minutes studying at a meter, then you can strategically pass over targets, but until you reach that point you'll learn a lot more by digging.  You'll also avoid some big mistakes.

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Divers discovered the ancient city of Heracleion while searching for Napoleon's ships.  Use this link to read the article and view the video of divers exploring huge stone monuments and statues.

http://www.dailymail.co.uk/sciencetech/article-2336723/Ancient-Egyptian-city-lost-1-200-years-begins-reveal-secrets.html

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I completed testing of one of the newer detectors and expect to have that written up before long.

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As you know I often post various kind of photos in this blog.  I often post pictures of the beach and various finds.  I also once talked about how it is a good idea to take photos of finds for your personal detecting records.  Not only will that help you remember your finds, but photos might also be necessary for insurance purposes.

There is one camera that I've found to be especially reliable and effective in most situations.   It is my Sony Handycam.

You've seen beach pictures that I've taken with that camera.  It also did the best job of taking pictures of flourescent fossil shells under black light.  That wasn't easy, but the Handycam did the job better than any other camera I have.

It has a still photo button, but I more often take a video and then select clips from the video.

Here is a photo that shows the camera's versatility.

Dragon Fly Photo Taken With The Sony Handycam.
Getting this photo could be a challenge with any camera but was easily accomplished with the Handycam.

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On the Treasure Coast we have some very nice weather.  The surf is still around two feet, but we have been having some nice low tides.

No change is expected this week.

Happy hunting,
TreasureGuide@comcast.net



Monday, February 16, 2015

2/16/15 Report - Strategically Selecting Discrimination Settings. Rechargeable Batteries.


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



Here is a simplified illustration.  It is not real precise, but I hope it helps.

If you are interested in finding gold jewelry on a beach or in the water and want to maximize the value of your finds, you should be aware of how discrimination will affect the results and the value of your finds.

As I've said before, back a lot of years ago I thought that women didn't lose nearly as many rings as men.  That was because I was using too much discrimination and missed many of the smaller women's rings.

The illustration above shows increasing ring size as you go from left to right.  The smallest rings are for babies and children.  Charms, ear rings and chains can also fall in this range.

On the right are the larger rings such as men's school class rings and championship rings.  Larger gold rings have more gold value, but small gold rings can be more valuable if they hold valuable gem stones.

The line plotted on the chart gives an idea of how the value of gold rings of different sizes.can vary.  The least valuable are small children's rings and small lady's bands.  The most valuable are typically diamond engagement rings.  High quality diamond rings do not typically have large bands, especially the highest quality solitaire diamonds.

Men's bands are typically bigger and have more gold weight. Men's gold diamond and gemstone rings can be quite large and hold valuable gems, although usually the gems are not of the same quality as those in quality engagement rings.

And then there are the very heavy championship rings, which usually don't have the highest quality gems, but are highly valued as sports memorabilia.

When I began serious water detecting I had a Fisher 1280X.  It had simple linear discrimination controlled by a single knob.  My initial setting was something like that shown by the orange line to the right of the chart.  I was then getting a lot of men's rings, but few women's rings.

If you have a simple linear discrimination setting such as that on the 1280 or the Minelab Excalibur,  you should be aware of what you might be missing.

One thing I want to show with this illustration is how you should strategically select your discrimination settings, simple linear or otherwise.

When I dialed back the discrimination to the level of the orange line to the left, I started getting more women's rings, which includes those in the high value engagement and gemstone category.

Large gold rings have more gold weight and gold value, but some of the most valuable rings will be those with quality gem stones.  They often have very small gold bands.

There are still small and possibly valuable gold items that will be missed even with the lower discrimination setting, such as diamond stud ear rings, which have very little gold weight.

Even if you have target ID, you should be aware of valuable targets you might be missing.  As I once demonstrated using the Ace 250, if you don't dig targets in the foil and aluminum range, you could miss something like 30 or 40 percent of the gold rings.

I am not showing precise experimental data in this chart, but I hope that it illustrates the main point  -- that you should be aware of the effects of discrimination so you can make strategic decisions with your settings.

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If your detector uses AA batteries and you detect a lot, replacing batteries can be expensive.  In that case it can be worth spending on rechargeable batteries.  Every good consumer report that I've seen rates the Eneloop Pro as the best rechargeable battery.  An eight pack will probably cost you nearly $40, but it could be worth it.  They recharge quickly, don't loose their charge quickly during storage, and last long.

There are NiCad and NiMH batteries.  NiCad batteries can develop a memory and so it is best to discharge them fully before recharging them.   NiMH batteries, such as the Eneloop batteries, use a better technology and do not have the memory effect.

It can take a number of discharge/recharge cycles for your rechargeable batteries to reach maximum capacity.  You can see that if you have a battery tester.  After the first recharge, the batteries may only show a charge of something like 70 or 80 percent.  You can expect that to improve.

I get a lot of good use out of my battery tester.  If you don't have one I'd recommend getting one.

Here is a link if you want to read more about rechargeable batteries.

http://copquest.com/battery_care.htm

I was just informed that the Eneloop batteries were developed by Sanyo (not Sony as I originally typed) but were bought by Panasonic.

Champ F. also said, Always buy the highest rated amperage ones available since you will be using them for many many years.

Good tip.  Thanks!

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We are back to a small surf along the Treasure Coast again.  It will give you an opportunity to check out the low tide area to see what might have washed in during the larger waves.

Happy hunting,
TreasureGuide@comcast.net