Anybody make a "REALLY" loud horn for boom trucks? 

yea you can get a set of after market train horns at your local truck stop or truck shop. they are very loud.

The Putz telebelt siren is the loudest thing on the block and nothing else on a jobsite sounds like it.

One of our members should be able to come up with a vendor name and part number

I have my air horn wired in to my pump horn.

Hey weave, These baadboys blow dip-shits rite off the road! Triple stak Train horns They come in 5 stax too. Cant use em on the job too much or the cops come. The boss lives 2 miles from the shop & He sez he hears em LOUD&CLEAR when I hang on these babys!

They'll cost ya a fun ticket ($100) I got these at Motor-trucks behind the local truck stop. Worth every dime. Have you heard the saying "Loud pipes save lives". Well... HOOONK!   Pump-On!

i guys mounted my horn on the end off fourth stage very easy too here. also horn still on truck for driver.

i woz on site the other day and there was another concrete pump company on same site. it was a little 24 putz. i kept hearing train horns all day. when waiting for concrete i went and saw the other driver. he had rigged airhorns up to back of pump/. i said why train horns? he said i get angry when i sound horn for mixer to stop discharging but they stil over fill me, when i confront them about mess they made they say sorry didnt hear you horn! so now wiv my airhorns they cant help but hear me!! fair play to him.