The last time I did fly 2.4 was just starting to come on strong, but I never got to it and stayed with my 72. Now I have a 2.4 Futaba 6JA 6-Channel S-FHSS. I also have a older Tower trainer that has the 4 channel 72. My question is can I find a buddy cord to work for the two? I want to use the 2.4 as the master and the older 72 as the slave. The reason is that a good friend of mine son wants to get into flying and if I can find a cord to "talk" between the two I will help him out. Thanks Mike.