A silver screen has been stretched out outside gates 1-4, and some 150 cars with a maximum of two people per vehicle - except families - can watch a movie. A recent screening was the Oscar-winner South Korean film Parasite. (www.stuff.co.nz) 更多...
Airplane? What is it? Oh it's a big metal thing that carries people in the air. (Airplane is also known as Flying High in Australia https://www.imdb.com/title/tt0080339/)
Probably low-power FM. Like the people that do the crazy Christmas decorations do. You can get a small one on the cheap that is FCC Part 15 compliant and in stereo and everything.
"Tune to 91.1 on your FM dial and enjoy the movie in clear stereo sound."
This website actually mentions "car radios", but not the band used; https://www.vilnius-airport.lt/en/news/aerocinema-a-drive-in-movie-theatre-lands-at-vilnius-airport