ORIGINAL: CGRetired
And as to the modules, well, they are manufacturer specific. You cannot interchange a JR module in a Futaba. The technology is different and proprietary and won't mix.
With all do respect i have to disagree. There are (other) brand name companies that make modules for JR module based TX other than JR/Spektrum. If i'm not mistaken, there's even a Futaba module for JR Tx. Maybe someone can elaborate.
Cheers,
V.
edit: check this link
http://www.rcgroups.com/forums/showthread.php?t=566018