Problem to read generated PPM pulses for radio control JR PROPO

HI, I’m trying developer a Arduino interface to use my joystick to crontrol my rc plane.
I found the many skecth and I'm trying this Google Code Archive - Long-term storage for Google Code Project Hosting. written by David Hasko and the signal was created very well, but, my radio, JR PROPO XG7, don’t recognized de signal.

The channel 01 show the signal generated by Arduino and the channel 2 show the signal readed from the radio.

Does anyone have any say how the way to fix it?