FV-20 Transmitter

FV-20 TransmitterPrototek continues bringing new technology to the locating industry. These FV Series 512 Hz transmitters are small and durable . They’re made of solid brass and the same tough urethane used to line rock tumblers. A gold battery contact prevents corrosion and the rubber O-ring seals out moisture.

Attach one to your pushrod, behind a camera, jetter or put it in our spring carrier and use with your cable for those tough jobs.


  • Compatible with all 512 Hz receivers
  • Sizes: 3/4 inch X 3 1/2 inches
  • Range: 20 feet thru cast iron, 30 feet through nonmetallic
  • Signal tone: Continuous
  • Duration: 8 hours
  • Power: One alkaline AAA battery
  • Line size: Moves through lines down 2 inches
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