Thanks for your explanations, all.
Can anyone answer me this? What are the things that look like some kind of antennas mounted all around the upper levels of the island? I count seven of them in clear view in the above image.
Each one appears to include two yagis that are tilted toward each other, with an oval ground-plane behind them. They are aimed outward at various angles, but each appears to be fixed (that is, not on any kind of gimbal mount).
Glad to help, but a hint where to look would help.
The antennas mounted on the front of the mid-level catwalks?
Arraying them like that can increase gain, but without modeling that particular type of circular polarized antenna, cannot say what it would produce.
I did cheat once when I needed a high gain linear polarization directional antenna and had no design facility. Knew how to make a helical antenna from scratch, made one left hand CP, one right hand CP, arrayed them together(parallel, not pointed in), and had my high gain linear antenna that I knew would work without testing.
From the angle they are set at, I suspect they are for the air boss to burn through to departing or incoming pilots over any other transmissions.
There must be some carrier swabbies her that know of this stuff better than me.
If we told you, we would have to kill you.
