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Vesper WatchMate 850 Class B Standalone AIS Transponder

Vesper WatchMate 850 Class B Standalone AIS Transponder

Manufacturer Part No: WMX850 |

Vesper Marine's Award Winning WatchMate 850 Class B AIS Transponder & Display is Designed Especially for Highest AIS Performance and Lowest Power Consumption.The Perfect Stand-alone AIS Transponder Packed with Innovative and Unique Capabilities.

Vesper VHF-AIS-FM Splitter with VSWR Indicator SP160

Simplify installation of AIS transponders by sharing an existing VHF antenna using this splitter. AIS amplifier greatly improves AIS reception and increases receive range.  

Vesper External alarm for 670, 750, 850, Vision 2 and XB-8000

Loud remote alarm for WatchMate AIS transponders, receivers, and displays. Adjustable volume and choose steady or pulsing sound.

Vesper Waterproof USB Cable For AIS Transponders

Waterproof and locking 5m (6ft) USB cable for the WatchMate 850, WatchMate VIsion and XB-8000 AIS transponders.  USB cable for the AISWatchMate 850, AISWatchMate Vision and XB-8000 transponders 5m (16ft) USB cable with a waterproof connector that twist locks into the USB socket on a Vesper Mari...

Vesper AIS Power Cable -39309

Replacement power cable (2m / 6.5ft) for Vesper Marine AIS transponders, receivers or displays

£29.16 ex-VAT

Vesper External GPS antenna for WatchMate 850

High Performance External GPS Antenna for WatchMate 850 This antenna system combines a high performance GPS patch antenna and a low noise amplifier into state-of-the-art low profile, extremely compact and fully waterproof enclosure.

£78.33 ex-VAT

Vesper Protective Cover 650, 670, 750 watchmate 850


£24.16 ex-VAT

Vesper Mounting Bracket for watchmate

Replacement mounting bracket for the Vesper Marine AIS WatchMate 650/670/750/850. Note: Not for use with WatchMate Vision

Vesper Thumb Screws

Replacement thumbscrews for the Vesper Marine WatchMate 650/670/750/850 and WatchMate Vision. These come as a pair and include two rubber vibration dampeners used with WatchMate 650/670/750/850. The vibration dampeners are not needed for WatchMate Vision.

£9.99 ex-VAT

Vesper Flush mount sealing and screws


£9.99 ex-VAT

Vesper WatchMate Vision2 smartAIS Touchscreen Transponder

Price Checked √ - Free UK Delivery √
WatchMate Vision2 smartAIS Touchscreen Transponder with WiFi and NMEA 2000 Gateway. The WatchMate Vision Is Our Most Advanced Class B AIS Transponder, Including Built-in WiFi, NMEA 2000 & 0183, Colour Touchscreen, GPS Receiver & Built-in GPS Antenna  

Vesper WatchMate XB-8000 smartAIS Transponder

Price Checked √ - Free UK Delivery √
WatchMate XB-8000 smartAIS Transponder with WiFi and NMEA 2000 Gateway. The XB-8000 AIS Transponder has Built-in WiFi, NMEA 2000 Gateway and High Speed 5Hz GPS Receiver.

Vesper WatchMate XB-6000 AIS Transponder inc External GPS

Price Checked √ - Free UK Delivery √ In Stock
WatchMate XB-6000 High Performance AIS Transponder with Built-in NMEA 2000 Gateway. The XB-6000 AIS Transponder has Built-in NMEA 2000 Gateway and Built in High Speed 5Hz GPS Receiver for smoother and more accurate navigation. Comes with passive external GPS antenna.

Vesper WatchMate XB-6000 High AIS Transponder

Price Checked √ - Free UK Delivery √ In Stock
WatchMate XB-6000 High Performance AIS Transponder with Built-in NMEA 2000 Gateway. The XB-6000 AIS Transponder has Built-in NMEA 2000 Gateway and built in High Speed 5Hz GPS Receiver for smoother and more accurate navigation.

Vesper WatchMate 850 Class B Standalone AIS Transponder

Vesper Marine's Award Winning WatchMate 850 Class B AIS Transponder & Display is Designed Especially for Highest AIS Performance and Lowest Power Consumption.The Perfect Stand-alone AIS Transponder Packed with Innovative and Unique Capabilities.

  • Protective cover
  • Installation guide
  • Mounting bracket with thumbscrews
  • Flush mounting template
  • 2m (6.5') Power/data cable
  • 1m (3') USB cable
  • Flush mounting seal and screws

208mm wide x 135mm high x 76mm depth (8 3/16” x 5 5/16” x 3”)

Environmental Waterproof (IP67: submersible to 1m for 30 mins)
Operating temperature -25°C to +55°C (-13°F to 131°F)
Power supply 10-32 VDC, 2.5W nominal
Number of receivers 2 AIS, 1 DSC (timeshared)
Receive sensitivity -113 dBm (<20% PER)
Number of transmitters 1 AIS
Transmit power output 33 dBm (2W)
GPS 50 channel with internal antenna. Supports WAAS and EGNOS. Also includes external antenna
GPS navigation rate Selectable 1Hz or 5Hz with magnetic variation included in output
GPS sensitivity -159dBm tracking & navigation
-142dBm acquisition (cold start)
GPS accuracy Position 2.5m CEP, SBAS 2.0m CEP
VHF antenna required 50 ohm, max 2:1 VSWR @ 162MHz, PL259 connector
Serial data 1 fully isolated USB port (mini), 1 isolated NMEA 0183 input (RS422 4800/38400 baud) 1 NMEA 0183 output (RS422 4800/38400 baud)
Connectivity NMEA 2000, NMEA 0183, USB 

All input NMEA 0183 sentences are repeated to the NMEA 0183 and USB outputs. Selected NMEA 2000 PGN's (heading, wind, depth, speed, temperature, and log) are translated to NMEA 0183 sentences and repeated to the NMEA 0183 and USB outputs. This allows a wide variety of NMEA 0183 and NMEA 2000 instruments to be interfaced and output to all other connected devices.
NMEA 2000 NMEA 2000 certified. LEN 2. Micro-C male connector. Female drop cable required (not included). Compatible with all NMEA 2000 certified Raymarine SeaTalk NG devices (DeviceNet cable required), Garmin, Furuno, SimNet (NMEA 2000 adapter cable required, Navico part 24006199 or 24006413), and other NMEA 2000 certified products.
Protocols IEC 61162-1, NMEA 0183, NMEA 0183 HS
Standards IEC 62287, IEC 60945, IEC 61108, IEC 61162, ITU-R M.1371, ITU-R M.825, ITU-R M.1084
Approvals BSH, BABT, CE, US Coast Guard, US FCC, Industry Canada
Warranty Two year world-wide warranty
Supplied With • 2m Power/Data cable
• External GPS antenna
Optional • SP160 VHF/AIS Antenna Splitter
• Waterproof USB cable
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