I thought Ken meant the hand-held, air canister with horn attached, type thing.
I use one on the sail boat, some people carry them here in Nova Scotia when hiking, to scare of the coyotes.
Perhaps they'd make a good ladrone repellant.
wbr
Ken,
Much as the Team and I dislike helping you we will never the less make an exception this time - they are avaliable at the Maring Chandlery just outside the POP port entrance.
Olly and the Team
Yes, I want the type used on a boat.
I mentioned a megaphone above, the Pyle PMP30.
PylePro - PMP30 - Professional Megaphone / Bullhorn with Siren
(I bought two for under U.S. $20. each, google to find what works for you.)
I've been playing with this and..... I DON'T WANT TO BE IN FRONT OF IT WHEN ON FULL VOLUME!
Ken , you didn't mention the use for the horn, but if it were for protection RINGO had suggested using a Bull Horn. Getting one of those avoids the compressed air transport issue. Ringo said in thread:
http://www.dr1.com/forums/living/137893-home-alarm-system-6.html#post1343714
Yes, I want the type used on a boat.