Channel 7 is spare in the receiver in my heli, and I want to program it to exactly mimic the throttle channel. I've gone into the Prog.Mix program in my Futaba 10C trannie, and programmed it to link channel 3 to channel 7. My problem is that, whatever I do, I can't get channel 7 to mimic channel 3 exactly.

If I simply reverse channel 7 (because channel 3 is reversed) and then program it for 100% rate at top and bottom, with 0% offset, when I go to the servo monitor screen I see that channel 7 is going from +134 to -66 where channel 3 is showing +100 to -100. I get the same result if I leave channel 7 in normal mode, and program it for -100% rate at top and bottom.

If I program channel 7's end points to 70% and 140%, I can get it to almost follow channel 3 it goes from +100 to -88, but there's no more end point adjustment beyond 140%, and that doesn't seem the right way to tackle it anyway. It seems to me that I need an offset of -34, instead of endpoint adjustments, but the offset can only be programmed in positive numbers from 0 to 100.

Can someone help me get channel 7 to exactly follow channel 3, please? I've attached a shot of my present Prog.Mix settings.

Problem solved.

Someone suggested that channel 7 might be assigned to some switch, and it was. Must be a default setting in the trannie, for I've never used channel 7 or the switch it was assigned to. Deleting that assignment has allowed me to program it as Iwanted, with +100% for top and bottom stick positions, and 50% offset.