HI bigboged,

You may use a 50Mhz, 72Mhz, or 75Mhz Futaba module in the 9C, at this time we still do not have the 9C Synthesized module.

The only thing you will need to do is to purchase another receiver on the same channel as your new module.

I hope you find this information helpful. You can also reach our Futaba support technical team at 217-398-8970, or via fax at 217-398-7721.

Sincerely,
Krysta
Lead Futaba Customer Service and Programming Technician
Also you may want to check our Website at (http://www.futaba-rc.com)