Raymarine RD218 Radome Antenna. Description: Raymarine RD218 Radome compact 18" High Performance Pathfinder 2KW Radome Antenna. Low noise receiver with 8 Pulse width/PRF settings delivers outstanding performance on every range. Includes 15M cable. Raymarine RD218 Features: 2kW power output. 24NM Range. Plug and Play compatibility with Raymarine C and E-Series multifunction navigation displays. New and improved dome housing. Improved radiation pattern and bearing resolution using Propagation Enhancing Geometry. Advanced microprocessor controlled transmitter receiver features 8 Pulse width/PRF settings, providing enhanced targets returns though every range scale. Improved sensitivity, signal to noise ratio, and a lower overall receive noise figure. Same mounting pattern as previous generation radomes. RD218 Specifications: Absolute voltage range 10.8-32v DC, Dimensions 20.1 inces x 9.7 inches (511mm x 246mm), Humidty Up to 95 percent, Max Range Scale 45nm, Nominal Voltage 12v,24v systems, Power Consumption 28W transmit, 9W standby, Pulse length/PRF 8 (auto target/expand), Rotation rate 24 rpm, Temperature Range -10 degrees C to +55 degrees C Operating -20 degrees C to +70 degrees C Non-Operating, Transmit Power 2kW, Transmitter frequency 9410 +/- 30MHz, Vertical Beamwidth 25 degrees, Waterproofing standard IPX6, Weight 16.5 lbs (7.5Kkg).