Radiodetection 8.5" (220 mm) Transmitter Clamp The Radiodetection 8.5" Transmitter Clamp is a large-diameter signal clamp designed for applying transmitter signals to large pipes, conduits, and utility infrastructure during advanced locating operations. Its oversized opening supports efficient induction on large utilities without requiring direct connection. Key Features • 8.5" (220 mm) clamp diameter for large utility infrastructure applications • Applies transmitter signals without direct electrical connection • Ideal for large pipes, conduits, and bundled cable systems • Compatible with Radiodetection transmitters and extension rod systems