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Beep - DIG!
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• Fifty-plus years of very avid metal detecting.
• Searched a wide variety of ground mineral environments.
• Hunted from very wet, and very salt-saturated ground to moderate, low mineralized ground, to very intense high iron mineralized ground.
• Used .. and learned .. BFO's, conventional TR's, TR-Disc., VLF, VLF/TR-Disc., VLF/VLF-Disc. & TR-Disc. models from many, many manufacturers.
• Evaluated prototype and used production run detectors of analog, analog/digital blend, and modern digital electronic design.
• Searched very sparse target sites, typical urban Coin Hunting sites, challenging Relic Hunting sites, and some of the nastiest, iron-plagued sites you can imagine.
• Evaluated many different search coil types along the way, especially the two most in use today, the Concentric and Double-D [size=small](aka Wide-Scan)[/size] designs.
• Have spent a lot of time taking notes of detector performance, signal responses, recovered many targets well spaced from other targets, and many more that have been partially masked by nearby targets of both ferrous and non-ferrous make-up.
• Have made it a point to set up evaluation test samples that duplicate actual in-the-field encounters, such as my Nail Board Performance Test, and have enjoyed the participation of newcomers, experienced hobbyists, avid detectorists, and even a few design engineers in checking out some test scenarios.
The conclusion I reached long, long ago, after 50 years of Coin Hunting and over 46 years of devoted Relic Hunting in ghost towns, pioneer and military encampments, stage stops and RR stops, homesteads and barns/outbuildings, urban renovation work and building demolition sites, is that regardless of the search coil used, the size or type of coil design, or the brand and model of the metal detector used, or the choices made of all the various adjustment settings they might provide, is this:
If you do everything possible to gain the best in-the-field performance with any unit in your hands, many conditions that are unseen to you [size=small](just like the targets you're trying to find)[/size] can cause, and will cause, good target masking. Desired target size, shape and position can also factor in and result in an altered response compared to a nice-and-proper positioned target with nothing about to interfere. No hot rocks, no mineral slopes, no close proximity metal targets, and no close proximity non-metal but offending objects that can distort the detector's electromagnetic field and thus result in an unnatural response.
Target position, target masking or partial masking, signal disruption, ground mineral conditions, and all sorts of things have caused me to recover targets,
good, desired targets like rings, necklaces, trade tokens, coins, etc., that produced a very clean, strong response from both a left-to-right and right-to-left sweep. Even cases where I can literally walk a circle around a target and get a repeated good response from any direction. All too often, however, I might only get a two-direction response that is broken and 'iffy', or a one-direction sweep response that sounds good and a reverse direction with a weak, iffy response or no response at all, and then there are the times when I only got a very 'iffy' one-direction response and nothing at all from any other sweep direction.
Have they always been good targets? Of course not.
Have all really decent, repeatable, strong responses with a good Target ID 'lock-on' been good, desired targets? Of course not.
There are two very 'simple' and 100% effective steps to take when out detecting and using the best detector, coil and settings for the site conditions where you're searching.
1.. When you get
any target response, strong, weak or 'iffy', and whether it is very repeatable, broken or only a one-direction response ...
Beep-[size=large]DIG![/size]
I've instructed this successful 2-step technique since the latter 1970's and have included that encouragement on many metal detecting forums since about 1995 or '96.
2.. Recover the target that caused the signal ... double check the spot to make sure it was the ONLY target present ... then read the 9 words located below my name.
Monte