I have no way to verify this, but from what I have observed the term "dual band" is generally interpreted to mean the ability to operate on more than one frequency band.
That's correct. But it doesn't specifically imply that only one band may be used at a time. I don't know for sure if the radio in the airport can manage both at the same time. Several of my HT's are dual band, and they can receive simultaneously on both bands, but only
transmit on one at a time, and don't receive while transmitting. Repeaters OTOH can receive on one band
while transmitting on the other band, and that takes some fine tuned hardware. But an airport is transmitting and receiving continuously, so it would have the same requirements as a repeater. (which would be asking a lot of it)
