When I bought my 9CAP, I had planned on using it for both boats and planes. I quickly learned that a stick radio is not as easy to use as a wheel when I drove someone else's boat during a race one day. I ended up buying, over a few years, a pair of Futaba 4PLS wheel radios for my boats so I no longer need to have anything on 75MHz for the 9CAP. At this point, it just makes sense to send it in for a checkup and have the module and receivers retuned to 72MHz so I can still use them on aircraft. If I can find a 2.4 module, I'll be set for a long time since I can't see needing anything more than what I have now for aircraft.