I bought a futaba/hitech trainer cord and cut the end and soldered on a plug to go to my micophone jack. IT works if I remove my crystyl from the tx. And only cost $12. Cheaper yet if you track down the male plug for tx and use a recycled wire(shielded is better ,imo) Plans and interface are free on the FMS site, look in the links section to find all you need! You can move the keys around to act more like a tx, this will still help if you set up the keyboard, I found out you can change the keys to late and it messed with me when I got the cable for my tx. If you are not a do it yourselfer let me know. Below is my faverite plane. It is a PQHOR spad.