Partial from a test of an outdoor warning system amongst brick buildings. Civil dense siren, public address message, construction equipment and springtime songbirds.
American signal t-128 and federal signal 2001 siren sounding in attack mode. These sirens are normally sounded in a steady tone for tornado warnings, but this rising and falling tone would be used for civil emergencies like an air raid or other attack on the city.
Mechanical outdoor siren recorded at a public park in bettendorf, iowa, united states. Attack (wavering) mode. The steady mode went on for several minutes so i just faded it out.
