Enjoy.
https://www.youtube.com/watch?v=7A6kIozBVnk
Those are Hörmann ECN sirens.DJ2226 wrote:I think Istanbul has some German made dual toned 415/425 Hz sirens. In an actual video of the event the sirens wind up in fast wail.
https://www.youtube.com/watch?v=lgA7jklITiI
As far as I know the only country in Europe with 2001s is Latvia, and I think they span the entire country.
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