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The 8" open concentric search coil of the Teknetics Alpha 2000 Metal Detector makes it a solid choice for coin and relic hunting. The preset ground balance and 7.8 kHz transmission frequency make this unit well-suited for general purpose detecting around parks and other open spaces. Detection results are displayed in inches on an LCD display and are audible through the headphone output.
Rubber buttons form the controls on this unit, letting you easily adjust the settings. You can choose between a single notch setting that will only provide returns on a specific metal or from one of six pre-set discrimination levels to better tailor your search results. This unit weighs 2.3 pounds and is powered by one 9V battery.
A transmission frequency of 7.8 kHz is well suited to finding objects such as coins and relics.
The ground balance is set internally by a technician at the factory and does not require you to do anything to set the balance. It comes preset for most coin, jewelry, and relic hunting needs.
The open concentric design of the 8" coils discriminates very well. Pinpointing of buried objects is easy because the strongest signal is always in the center of the coil.
The LCD screen displays sensitivity, depth of the detected object, and type of metal detected.
You can adjust the sensitivity of the unit to be more selective towards certain types of metals.
Buttons provide you with an easy to adjust interface so you can change features such as sensitivity quickly.
Choose between notch modes to detect certain metals only, or one of 6 levels of discrimination
A low, medium, and high tone provide an aural clue as to the type of metal present. Ferrous objects such as iron and steel will induce a low tone. Small gold objects can also induce a low tone. Pull-tabs, post-1982 pennies, larger gold objects, zinc, small brass objects, and most bottle screw caps will induce medium tones. Silver and copper coins, larger brass objects, pre-1982 pennies, and highly oxidized metals will induce high tones. Quarters, dimes and other precious coins fall into this category.
A 1/8 and 1/4" jack lets you use headphones to better interpret audio feedback.