Fig. MAIANA AIS transponder transmission and reception part with fixed antenna (Open Marine) Peter Antypas built a self-made AIS class B receiver / transmitter and presented it on Github: https://github.com/peterantypas/ais_transponder Functionality The device combines the following Functions: AIS class B receiver / transmitter 161.975 MHz (channel 87B), 162.025 MHz (channel 88B) 2W transmission power Silicon Labs 4463 … Continue reading MAIANA ™: The Open Source AIS Transponder