Special:Badtitle/NS90:Radio communications were carried out from airplanes as early as 1910 (2)
From ETHW
I'm willing to accetp that there is a considerable difference in the challenges of interference for what might very well have been line-of-sight wireless transmissions between an airplane and static or moving ground stations on the one hand; and a train moving through tunnels and mountain passes while traveling besides telephone and possibly power lines on the other. The problem here is the absence of a history of railroad radio systems that would explain the technical and then economic challenges that delayed the diffusion of radio communications to supplant the induction system often used in the early 20th century.
