Question:

I have a Lynx 3D controller in 75 Mhz. I have the chance to get a 27 mhz transmitter unit for the Lynx 3D. Are these two different radios or will 27 mhz work on the 75 mhz transmitter?

It will work perfectly.

does Hitec or anyone make a synth transmitter module for this? i know that novak makes a synth receiver. Is there a DCX receiver in 27 mhz as well as 75 in fm?

The Spectra module is the synthesized module for the radio. It is only available on the 75 mhz (p/n 24475) band though. Hitec currently does not have a synthesized receiver but you can use the Novak XXTRA.

Thanks guys!