Jeff, I used the parts listed in the original article - http://www.amazon.com/dp/B00P2UOU72/ref=cm_sw_su_dp
I'm going to mount a 978 antenna on the belly to feed this.
I found updated S/W on Github last night, and now the iFly 720 and the Android phone both see the Ras-Pi radio. I'll test it again in the air later today or tomorrow.
https://github.com/cyoung/stratux/releases