Your Hitec receiver is set up for negative shift 72mhz FM/PCM radio signals, but your JR transmitter uses positive shift signaling and can't talk properly to the Hitec receiver.

The traxxas receiver isn't designed for 72mhz usage, the normal air frequency for standard air radios. As such, it won't work properly with any kind of aircraft radio. If it could, you'd still be violating radio channel safety guidelines that are designed to prevent interference and crashes.