8
29
TEKNETICS
Comprehensive Operating Manual & Guide to Metal Detecting
TEKNETICS
Comprehensive Operating Manual & Guide to Metal Detecting
Introduction to the Teknetics T
2
HIGH PERFORMANCE
The Teknetics T
2
is a multi-purpose high-performance
computerized metal detector. It has the high sensitivity and ground cancellation features
needed for professional gold prospecting, the discrimination responsiveness needed for
serious relic hunting under difficult conditions, and visual target ID considered essential in
searching for coins. The ground cancellation system can be adjusted to allow searching salt
water beaches. The T
2
operates at 13 kHz for good sensitivity to gold nuggets and jewelry as
well as to coins. The T
2
comes with an 11-inch elliptical Bi-Axial searchcoil for maximum
detection depth in mineralized soils.
USER COMFORT
The T
2
is light weight and the best balanced of any high-performance
metal detectors, so you can hold and swing it almost effortlessly. The arm rest position is
adjustable to fit your arm. The grip is durable high-friction foam elastomer, comfortable in any
kind of weather. The controls are conveniently located and easy to learn how to use. Locking
collars on the tubes eliminate rattling.
EASY-TO-USE & INFORMATIVE INTERFACE
The entire menu is always visible on
the LCD display. The LCD display indicates the electrical signature (target I.D.) of the
detected metal object. The display provides continuous information on battery condition and on
ground mineralization, which affects detection depth. Help messages are automatically
displayed on the lower right corner of the display when necessary.
LOW OPERATING COST
The T
2
is powered by four AA alkaline batteries, which will
typically last for more than 40 hours of use before needing replacement.
DESIGNED BY EXPERIENCED ENGINEERS
The lead engineers on the T
2
design
team were John Gardiner, firmware engineer, and David Johnson, whose expertise is behind
many of the best-known high-performance metal detectors offered by major U.S.
manufacturers for the last 26 years.
SEARCH TECHNIQUES (continued)
HOT ROCKS
A hot rock is a rock which causes the metal detector to sound off because the rock contains
iron minerals. They come in two basic types.
Negative hot rocks (also called cold rocks) are usually magnetite or contain magnetite,
and give a negative response because their ground cancellation phase is a higher
number than the soil they are found in. They tend to be dark in color, usually black, and
usually heavy. In some cases they will have rust stains. They are usually attracted to a
magnet, and for this reason gold prospectors always carry a magnet—the ultimate
ferrous/nonferrous discriminator. In All Metal mode, negative hot rocks produce a boing
sound rather than the zip sound of a metallic target; recognize the difference and you will
learn to ignore them.
Positive hot rocks are iron-bearing rocks which have been oxidized by natural weathering
processes so that their Ground Phase number is a number lower than the soil they are
found in. They are often small, right on the surface, sound just like a gold nugget, and
are common in many gold prospecting areas. They are usually, but not always, drawn to
a magnet. They are most often reddish in color but are often black, brown, or yellow. On
relic hunting sites, red clay bricks and rocks which have lined a fireplace or a campfire
will often be hot rocks. The discriminator will usually eliminate them without difficulty if
widely scattered, but if there is a large concentration of them, the discriminator may not
quiet them all. In that case, you can revert to the rule of thumb — “don’t dig non-
repeatable signals”.
Using the sensitivity control
When the T
2
is first turned on, the Sensitivity is at a medium setting appropriate for most
coinshooting. For relic hunting or gold prospecting, higher Sensitivity settings are preferred.
In the event of nuisance detection signals due to electrical interference from electrical power
lines, electrical or electronic appliances, or another metal detector, it is usually necessary to
reduce the Sensitivity setting to achieve quiet operation. Alternatively, use the Frequency Shift
feature described earlier in this manual.
If, while searching, you are constantly getting signals from which you cannot recover metal
targets, you may be detecting small or deep targets which are not recoverable using the
methods at hand. So, you may do better if you reduce the Sensitivity setting.
TekneticsMANUAL.qx6 4/2/07 11:02 AM Page 8
