Yea, you have to have Aux 1 and Aux 2 to make this work. Sorry. With a 6 channel tx you still may not have enough channels. You need 4 for th, ail, elev, and rudder. That only gives you mode, the Aux1 channel, and Gear or Aux 2 for IOC. You can set up a mix for the RTH function or shut off...