One more time -
The phase shift only matters for 75Mhz FM. All others are compatible. For 75Mhz FM, Futaba and Hitec are compatible since both use negative shift. Airtronics (Sanwa), KO, JR use positive shift. You can't mix Futaba and JR if you're running 75Mhz FM.
AM you're ok, 75Mhz FM - won't work.