I just bought a lynx 3d radio and the module specifies using the ch.76 tx crystal, but I checked out hitecrcd.com and it says I can use any hitec 75mhz crystal, but for best performance, use what the module has listed. well im running ch.68 right now in it and I notice after about 5 minutes the module starts heating up and gets a little warmer than warm, but it doesnt get hot. I dont know what to do, should I just buy the matching tx crystal for the module. I tried cleaning the contacts from the radio that go into the module and it's still having the same problem. What should I do?

The heat is normal. Mine does the same thing. And you don't have to worry about the channel, you'll be fine.

ok thanks, this is my first radio with a module, i have had the lynx fm my entire time, and just upgraded to the lynx 3d. i might get the spectra module. i was really worried something was shorted and I didn't want to use it until I knew what the problem was, thanks again.

One thing to remember, ALWAYS have you ant. out when the radio is on.