Yes, Matt, you are right. I have interchanged for years and never knew that I was screwing the pooch.
I only proved that one of my favorite cliches in my 41 years of aviation is still correct, and that is"
"What one does NOT know isn't as dangerous as THAT WHICH one KNOWS FOR SURE BUT AIN'T SO!"

In this case I KNEW the B-cords were interchangable, however just because the plugs fit doesn't prove the product is the same. EXPERIENCE is what I get, just before I need it !!! Hopefully my experience will assist someone else and save a plane.

From HITEC: >>>>>>>>
Hello Horace,

I hope I have a correct understanding of the problem you are having. When you use a Futaba cord with a Hitec and Futaba transmitter combo, both transmitters will broadcast on frequency. To eliminate this, either use a Hitec one way cord or pull the module or crystal out of the student transmitter.

Regards,
Tony Ohm
Service Manager
Hitec RCD/Multiplex USA
<<<<<<<<<<,

YES SIR, I will, I will.