This is a photo of the Emperor Hirohito in 1936 inspecting an array of Japanese war tubas, as made by Yamaha. Just thought I'd share.
I guessed somebody would find a clip on YouTuba. PS The bit about Yamaha was a joke; the war tubas were real.
Pete, which one is Tubby? http://www.youtube.com/watch?v=p6CqyYthY0U Just to show my age, you know.......
So they are massive ear trumpets but for aircraft ? honest question, like I say I'm intrigued, find this kind of thing really interesting, and yes I need to get out more !!!!
The clue is in Post #3 Acoustic direction finding of aircraft was a reality but it looked nothing like a war trumpet.