It would appear that the Air Gateway has been discontinued. Any suggestions for a replacement. The Ubiquiti Cube is not an option as it has no external antenna.
Thanks so much for everybody's input. I will go with Darryl's suggestion = MicroTik hAP Lite Router. At nearly half the price locally of the discontinued Air Gateway, the MicroTik hAP Lite is the way forward here in South Africa.
I recently found one from a Ubiquiti dealer that still had them in stock. You might Google around and see if you can find one.