Last year I recorded the Kansas Statewide Tornado Drill in Blue Rapids, KS. They have a lovely mix of 2 2t22s and 2 Allertors. One of the Allertors may not be functioning. There is some high pitched siren that I searched high and low for in town and could not locate. Could it be one of the 2t22s with a blocked intake??
Blue Rapids sounds their sirens in a custom on/off cycle for tornado warnings and alert signal for fire calls.
https://youtu.be/Ao1Qf9S1YPk