gwizz
New member
I've bought a NASA AIS plotter but it cant seem to receive the necessary signal from my GPS so is not a lot of good at the moment. The NMEA output is from my Raytheon RC320 gps and this feeds my Raymarine 215E dsc radio fine, the gps has nmea +ve and -ve output wires. The Nasa seems to have three output wire;s red, black and blue. Red and black are for an external buzzer and only the blue is supposed to be for the nmea input. I've tried the other two wires thinking they may be common -ves but still no signal is being received. anybody got any ideas? the manual is useless (or I am)