Originally Posted by cwyckham
So for two $20 setups you get full AIS? What do you miss with only one?
Having watched both videos, it appears that AIS data is transmitted on 2 frequencies. With a single
dongle you can only receive the data packets on a single
frequency. I am guessing with a second dongle you can point it towards the other frequency and receive data packets from that one also.
40 bucks should give you full AIS "reception" for all ships within VHF
range. which is compatible with OpenCPN as demonstrated in the second video.