Digital Yacht MA800 GPS Antenna for AIS Transponders

The Digital Yacht MA800, part number X500.391, is a passive GPS antenna built for AIS transponders, compatible with the full current Digital Yacht AIS transponder lineup including the AIT2000, AIT2500, AIT3000, AIT5000, CLA1000, and CLA2000. That broad compatibility makes it a safe replacement choice across most of Digital Yacht's own product range without needing to match a specific model number. A passive design also means it draws no separate power, simplifying the install compared to an active antenna.

It's also an ideal replacement antenna for many other makes of GPS receivers and chart plotters, not just Digital Yacht's own hardware, extending its usefulness beyond a single brand ecosystem. It can additionally be used with the discontinued AIT250 and AIT1000 transponders. That gives owners of older, no-longer-produced units a genuine way to keep their existing system running without hunting for an original replacement part.

One detail worth noting on the older units: the MA800's physical size and shape differ from the original antenna those discontinued transponders shipped with. The base can be removed for puck mounting, or left in place and attached to any standard 1-inch mounting accessory. It still fits a variety of mounting setups despite that physical difference from the original unit. Browse more marine antennas.

• Compatible with AIT2000/2500/3000/5000/CLA1000/CLA2000
• Works with many other GPS receivers and chart plotters
• Also usable with discontinued AIT250 and AIT1000
• Removable base for puck mounting or 1" accessory mount