OK, There are older and newer style Tx/RX for Airfield.
OLD STYLE:
Bind button on Tx
No bind button on Rx, but a Bind port for a bind plug. Rx is black
Binds just like Spektrum.
Tx off
RX off
Plug bind plug into Bind port
Lower Tx throttle
Hold BIND button on Tx and power up Tx and keep holding Bind button till Rx is bound (watch video below)

New STYLE:
No Bind Button on Tx
Bind button on Rx, Rx is Translucent BLUE.
Binding is actually much easier.
DO THIS AT HOME!
Power up Tx
Power up RX
Set throttle to down.
Push bind button on Rx
LED should go green on Rx.
If LED BLINKS RED on Rx, there is a reception problem.


Video of OLD TX bind procedure with annotations about new Rx/TX
[youtube]http://www.youtube.com/watch?v=6ZLGC_0-W8I[/youtube]