Teknetics T2 - Colonial Metal Detectors

Specifications

MECHANICAL: S-rod with electronics housing mounted on handgrip, 3-piece breakdown, batteries under elbow, 2-way armrest adjustment -- forward/backward & around forearm.
SEARCHCOIL: 11” (28 cm) open-frame elliptical double-D, waterproof
BATTERIES: 4 AA’s, alkaline or NiMH (not included).
WEIGHT: 3.5 pounds (1.6 kg) with alkaline batteries installed.
STATIC BALANCE: force in vertical plane normal to elbow .47 pounds (.22 kg). Varies with adjustment and user’s stance and arm/hand physiology.
DYNAMIC BALANCE: axial moment, .29 foot-pounds (.39 newton-meters).
Varies with adjustment and user’s stance and arm/hand physiology.
SWEEP EFFORT: lateral moment 5.2 foot-pounds (7.1 newton-meters).

Operating Features

USER INTERFACE: Menu-driven. Entire menu is always visible. Where you are in the menu is always indicated.
ALL METALS MODE: first derivative (single-filter) motion.
DISCRIMINATION MODE: second derivative (two-filter) motion, with selection of target identification tones and sampling methods.
PINPOINT FEATURE: trigger-actuated, fully static (non-motion) with variable pitch.
GROUND CANCELLATION: trigger-actuated computerized, or manual.
VISUAL TARGET I.D.: 0-99 plus eight target category indicators.
MINERALIZATION READOUT: ground cancellation phase 0-99, and mineral concentration bar graph.
FREQUENCY SHIFTING: seven selections (to avoid electrical interference)

Performance

OPERATING PRINCIPLE: VLF induction balance
OPERATING FREQUENCY: nominal 13 kHz, quartz crystal timing reference
BASIC SENSITIVITY: 5 x 109 root Hertz (detectivity)
LAG COEFFICIENT: 70 milliseconds
REACTIVE OVERLOAD: approximately 10,000 micro-cgs units (volume susceptibility)
RESISTIVE OVERLOAD: approximately 1,200 micro-cgs units (volume susceptibility)
GROUND CANCELLATION RANGE: From ferrite to salt, inclusive
DISCRIMINATION GROUND SUPPRESSION: combination of second and third order methods
ID GROUND SUPPRESSION: third order
BATTERY LIFE: typically 40 hours with good quality alkalines, somewhat less with NiMH rechargeables.
OPERATING TEMP RANGE: -4 to +122 degrees F (-20 to +50 degrees C)
OPERATING HUMIDITY RANGE: 0-90% non-condensing