But do you think Red could use something like this to get the attention of certain individuals on his field?
https://scontent-ort2-2.xx.fbcdn.net/v/ ... e=5B8869A7
Nah. Takes too long to warm up and get up to tone.
Keeping in mind that at full scream, those things can put out some 138dB- about the same as a jet engine at takeoff. The dude demoing it only very briefly blipped the throttle to close to full power, judging by the exhaust flappers, but I'd bet the impeller still never got above 70% speed. Even what little he did was risking hearing damage for everybody within 100 meters.
Red would prefer the instant surprise- to say nothing of the portability- of a boat horn.