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Fisher TW-6


MSRP: $788.00

The Model TW-6 “Two-Box” metal detector finds underground pipes, cables, manhole covers, vaults, valve boxes and other metallic objects.

The TW-6 is used primarily by water departments, telephone companies, power companies, gas companies and petroleum pipeline companies when making repairs and rearranging lines. The TW-6 shows where to dig, as well as where NOT to dig.

To increase the instrument’s sensitivity, Fisher engineers removed all un­necessary metallic parts on the TW-6, replacing them with durable ABS molded plastic. Coil windings are designed with completely upgraded electronics and nonmetallic parts have boosted the tracing distance of the TW-6.

A two year limited warranty comes standard with the unit.

  • Features:
    • Crystal controlled frequency in both transmitter and receiver increases tracing distance.
    • Unlike other units that use a separate transmitter and receiver, the TW-6 when mounted on the handle, can conduct “blind” searches of an area to locate an underground pipe or cable when the starting point is unknown.
    • VCO (Voltage Controlled Oscillator) gives a wider range of audio signal to indicate the presence of metal. Even after the meter pegs, the audio signal goes much higher in pitch and volume.
    • Noise cancelling circuitry eliminates power line interference.
  • Receiver:
    • Operating Frequency: 81.92 kHz + .005%
    • Batteries: 8 AA (NEDA 15)
    • Weight: 2 1/2 lbs. (1.1 kg)
    • Dimensions: 11 1/2” x 9” x 3” (29 x 23 x 7.6 cm)
    • Operating Temperature: -10° to +120° F, (-23°C to +48°C)
  • Transmitter:
    • Operating Frequency: 81.92 kHz + .005%
    • Batteries: 8 each. AA (NEDA 15)
    • Weight: 3 lbs. (1.36 kg)
    • Sensitivity:
      • Normal: 400 uV typical
      • High: 8 uV typical
    • Signal-to-noise Ratio: 110 dB
    • Headset Impedance:
      • 600 ohms (mono)
      • 8 ohms (stereo)
    • Dimensions: 11 1/2” x 9” x 3” (29 x 23 x 7.6 cm)
    • Operating Temperature: -10°F to +120°, (-23°C to +48°C) depending on batteries used
    • Total Weight: 5 1/2 lbs. (2.5 kg) - (without accessories, ground plate assembly & op. manual)
    • The rod handle shown is not included, must be ordered separately.