BEagle
within the aerodrome traffic zone
Thought that's what ATZ stood for.
So you are of course correct.
Unicom works fine in the US when traffic is light, however there have been plenty of incidents where pilots, without the benefit of a ground station, have chosen to use two different runways at the same time, sometimes with fatal results.
At Popham, where it's a/g it is very useful to have the a/g operator look over your shoulder when on 26 as you can't see the offset approach clearly from alongside the threshold.
Ditto when at the threshold of 03 Admittedly the a/g operator doesn't have that much better a view over the trees but he is better able than me to keep abreast of what traffic is in the circuit while I am doing my checks.
Mike