hitec lynx 3d HELP ME PLZ and receiver help

[piggybackrevo]

ok i posted before but i need help i have the hitec lynx 3d and it allows channels 61-90 and i dont know how to change the channel on the radio to work my other crystals it works with the receiver it came with and that ch70 crystal but if i put a 75 in it dont change it automatically and i dont know how to????/

the receiver it came with is a hitec fm75mhz dcx negative shift


i have a hitec 75mhz dcx positive shift will this work with this radio????

also have a hitec 03mk single conversion narrow band will this one work??? cuz when i put the ch70 crystal in them that is already programmed on the radio they dont work i cant turn or hit throttle??? plz help me

[piggybackrevo]

ok i figured out how to change the chanells but why dont the other 2 receivers work???? there 75mhzz

[AreCee]

You answered your own question. They don't work because they're positive shift and the transmitter is negative shift.