Luke,
I think we've already covered this in another forum, and if not I do apologize. You CAN NOT use the Airtronics radio as a buddy box for a Futaba. There is no way to make it work. If you want to buddy box off of the Futaba then you will need to get a Futaba buddy box. I know that you want to make it work with what you bought, but it's just not going to happen. The same think applies to trying to use the crystal from the Futaba in your Airtronics.

Sorry for the bad news.

Ken