Thank you for your reply. I appreciate the tips and comments. I thought this might make a good transmitter for my grandson to use, allowing both of us to operate boats on the pond at the same time. The Tx will be specific to a particular boat that requires only three functions (throttle, rudder, and lights). Hopefully, I will not need to reverse any servos. Have you had to update your DXE? I was discouraged to learn that a programing cable is necessary to update. This was not included with the Tx and is rather pricey, being about 30% of the cost of the radio alone. I do not intend to use this to fly planes so only rudimentary functions are necessary. Will I need to update the program in the future? Thanks again.