There is nothing wrong with 72 Mhz radios, and no need to get rid of them just because you have a 2.4 Ghz system. I have 3 2.4 radios and 6 72 Mhz system, and I use all of them to this day. Why sell the radio just because it's 72 Mhz?? It will still fly your planes, and you don't have to spend extra money. Save it and use it to fly your planes with. There is no law that says you have to have only one radio.

Ken