uncommonsense wrote: ↑Mon Apr 08, 2019 12:39 amSorry I haven't had a chance to reply until now. This is a masterful thread chock full of great information. Its well researched and, frankly, wonderful. I wonder how the 4000-II worked. Whelen hasn't, at least from anything existing, produced a cabinet that took over 10 amps. I wonder if they made a special cabinet that took 16 amps or if they wired two together ala Federal and the MOD 6048. What is your source for knowing only one was produced? I'd love to know where it ended up.
With the 2700s, there a 2790 siren was advertised and produced with one known unit existing in Ottumwa, IA. Thread: https://www.airraidsirens.net/forums/vi ... hp?t=20515
There also was an OmniAlert siren that predated the current OmniAlert sirens. It seems like it ran on the same controller that the original Vortexes did (some variant of the digital 864). Maybe the same as the 28x series? Of course I can't find the YouTube video showing that--it may well be gone--but if I find it I'll edit this message to reflect it. It was a kid activating a fire department's siren from the cabinet which was clearly labeled "OmniAlert."
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