GPS Antenna 10M (33') Extension Cable for AIS TranspondersThe cable supplied with the WatchMate Vision, XB-8000, or XB-6000 transponder external GPS antenna is 10m (33') long. You can easily extend that cable another 10m (33') with this kit.Kit Includes:10m (33') of marine grade RG58 coax cable with factory-installed connectors on both endsSMA joiner to easily connect the two cable segments togetherAdhesive lined heat shrink tubing to seal and waterproof the connectionNote: This cable does not fit the newer style WatchMate 850 GPS antennas (GPA861). If your WatchMate 850 has this external GPS antenna then this cable cannot be used. If your WatchMate 850 has the older style antenna (GPA851), then this cable may be used. Please contact us if you aren't sure which type you have.