There are some systems out there that use Whelen's Air Horn tone for all clear, etc. What I want to know is, is the tone modulated on-site, or is it prerecorded?
Also, is there a way where I could recreate that sound? :think:
Air Horn Question
-The Bird
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dclarkct
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Re: Air Horn Question
Air horn is a modulation of two tones (465 for 4 cycles,650 for 5 cycles). It is generated in the controller not a recording on the DVM.
Age 55.
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