SKIPPER DL850 DOPPLER SPEED LOG TRANSCEIVER UNIT: The Skipper DL850 Doppler Speed Log Transceiver Unit is a vital component that both transmits and receives radar signals. It enables the system to detect and measure the speed of a vessel. The transceiver’s performance is crucial for providing accurate and reliable data. Regular inspections and servicing help maintain the unit’s optimal performance, ensuring it functions effectively in various marine environments.