I have a Positive Shift Dual Conversion 3 channel 75 mhz FM receiver by Hitec, it says it will work with Airtronics, JR and Kro Propo FM transmitters.
Like I mentioned in my previous post. I just got an Airtronics MX-3, I tried to control the DCX rx with the airtronics crystals and it doesnt work. I am in the process of getting another airtronics micro receiver for another car to switch the DCX unless someone could verify that the DCX would work with the MX-3 if I just buy a pair of genuine Hitec dual conversion crystals. (since crystals are cheaper to buy than a 3 channel airtronics rx)

Thanks,