The Raymarine SR6 combines a state-of-the-art Sirius weather and audio receiver with a 6-port network switch in one easy to install cost and space saving unit. Delivers highly detailed, real-time forecast information including weather radar, storm tracks, sea surface temperature, wind, surface pressure, wave heights, lightning, and much more. You can also enjoy over 128 channels of original satellite radio programming. Monthly subscription fees apply. Antenna sold separately.