Navman 1240 / Northstar GPS124
Navman 1240 / Northstar GPS124 NMEA GPS receiver fits all Navman Northstar Chartplotters series which use the 1240 and GPS124 antenna.
Great for a second boat or as an external antenna for the internal antenna version chartplotters.
These will fit for some other brand chartplotters also but cable modification could be necessary. NMEA output so all devices that support NMEA can use this antenna.
Price 70£ each + P&P