[Flightgear-devel] List airports an frequencies in range

[Marc K. <in...@ma...>]

Hello,

I'm in the process of writing the Rolls-Royce Accel 'Spirit of Innvoation' for flightgear. At the moment I'm hooked to one of the compact comm radios from TRIG.
The device has the option of storing a list of frequencies with airport id and station types within range via GPS and calling them up easily. 
Unfortunately, I can't find any way to access the frequencies in range from the plane.
It is about exactly the values ​​that are displayed to us by the AI ​​Display Airport Frequencies menu. 
But how can I access it in the directory?
sim/ has in the aircraft no further airport params.

Cheers,
Marc