ORIGINAL: jetmech05
Chuck has it right. radios must be compatable. not the same brand just compatable. with the right buddy cord. theres jr to futaba. there's round to round square to square and square to round within futaba and it makes a difference when the 2 radios were built. best thing get together look at the 2 xmitrs and go from there. REMEMBER ONLY TURN ON THE TRANSMITTER THAT THE STUDENT BRINGS DONT TURN ON THE BUDDY BOX.
have fun
I use all Futaba equip, but I do believe you have to turn on the power on the students box if you are using JR to JR, and remove crystal from student box. Futaba to Futaba only the Master box is turned on as jetmech stated, and when using the JR to Futaba Cord I am not sure if the Student Box is to stay off or on? I would assume the student Futaba box would have to be on using this configuration. Futaba (compatible) to Futaba (Comaptible) or JR to JR will be the easiest to get a cord for unless your hobby shop does happen to have the special JR to JR/Futaba Cord(JR must be used as Master Box) . When using two Futaba Radios you will have to know what jacks are needed. The newer Futaba Radios use a Square Plugin, and the older ones use a round plugin as stated above. So you will want to make sure you get the right cord!