[RC232] Are the RC1140 and RC1240 compatible No. They are not compatible. Last Update: August 8, 2017 July 7, 2017 1271 RC232 Q&A Related Knowledge Base Posts -[RC232] How do I bring the device in config mode without pressing the on board button?[RC232] Are all the connections on P5 necessary for a Microcontroller? Or are the pins Config/TXD/RXD/GND sufficient?[RC232] “For a packet size of 24 Bytes, could you provide an estimate of the ‘on air’ time at data rates of 50 and 100 Kpbs. PilotAware is a co-operative broadcast system, and hence the minimum amount of time on the air is crucial. “