Radiodetection 4" (100 mm) Transmitter Clamp The Radiodetection 4" Transmitter Clamp is a utility locating signal clamp designed to apply transmitter signals to medium-diameter cables and pipes where direct connection methods are impractical or unsafe. It is ideal for energized systems and routine locating workflows in utility environments. Key Features • 4" (100 mm) clamp diameter for medium-size utility lines • Enables signal application without disconnecting energized cables • Designed for safe and efficient utility locating workflows • Compatible with Radiodetection transmitters and extension rods