Originally Posted by blackmoon
Good to know that the module is available as spare part, had I known this yesterday...
Sorry about that, I thought you guys knew
The modules from ebay you linked to have a PCB antenna. Even though they should work, their range isn't very good.
I've soldered little wires onto the module on my stock TX so that I don't have to open it every time I want to check something. I will try to figure out the EPA/subtrim protocol in the next few days.
I've attached a few images of the ATmega644 breakout and the 'shield' I use for testing the software. The shield can accept both the SparkFun and the Nine Eagles modules, so I can test with both.