First air-to-ground voice communication-1915
![First air-to-ground voice communication-1915](/content/images/size/w2000/2022/09/Screenshot-2022-09-07-074616.png)
First Published 21.AUG.2020
https://spectrum.ieee.org/in-world-war-i-british-biplanes-had-wireless-phones-in-cockpit
First Published 21.AUG.2020
https://spectrum.ieee.org/in-world-war-i-british-biplanes-had-wireless-phones-in-cockpit