Suppliers to the Subsurface Utility Engineering Community
Prototek Logo
Prototek Line Finder - LF-2200 Digital Receiver

Powerful, easy-to-use and dead-on accurate. Did we mention economical too?Download the brochure

The LF2000 gives you all the information you need, without confusing distractions, through the toughest cast iron or non-metallic locating jobs. Works great with Prototek's line of 512 Hz transmitters, as well as video cameras and any other 512 Hz equipment.

The LF-2000 is a powerful and durable receiver that is also remarkably easy to use. Locates any 512 Hz sonde in
cast iron or non-metallic lines. Uses 6 off -the-shelf AA alkaline batteries. A clear clicking sound provides intuitive
feedback on signal strength – the faster the click, the stronger the signal. Clear LCD screens (with automatic
backlight compensation) guide you through the steps critical to locating with accurate position as well as precise

LF-2200 Display Screen

The LF2200 screens guide you through every step of precise, accurate locating. All the actions are controlled by the thumb-operated 4-way rocker switch!

Prototek Line finder LF-2200Specifications

  • Frequency: 512 Hz
  • LCD Screen: Peak locate, Line, Sonde, Depth
  • Automatic depth detection to 17 feet
  • 4-way thumb switch: Power, Gain, Screen select
  • Speaker output: Variable rate click
  • Power source: (6) AA Alkaline
  • Battery life: 30-40 hours
  • Operating temperature: -20 to +130°F
  • Weight: 6 lbs.
  • Size: 32” x 8” x 4-1/4”

What's the difference between the LF-2000 & LF2200?

First, let's talk about what they have in common. They are both high quality, easy to use digital receivers for underground locating. Single button operation with clear guidance using LCD screens and a vibrating handle are the Prototek innovations you'll enjoy with either unit.
The LF2000 locates 512 Hz sondes through cast iron or nonmetallic lines, using simple locating steps that pinpoint the sonde, finishing with automatic depth calculation. This is all the LF2000 does, but it does it well.
The LF2200 locates 512 Hz sondes also, using exactly the same method as the LF2000. In addition, the LF2200 does the following:
  • Locates 16 Hz sondes (for locating through steel or ductile iron lines) using the same method.
  • Locates 8 KHz sondes (for locating in nonmetallic lines only) for interference-free locating near power lines.
  • Traces underground metallic lines (water lines, tracer wires, power and telephone utilities, etc.) in conjuction with a line exciter like our Blue BuzzBox, at 4 different frequencies for maximum versatility.
  • "Sniffs" the frequency of just about any sonde or line exciter and locks on to it.
  • Traces underground 60 Hz power lines directly (without needing a line exciter).