Thunderbolt 1000AT Siren Tour 5/16/21 San Angelo, TX 

All of San Angelo's sirens were decommissioned in 2017 and are being removed.
Location: N Garfield St
Installed in 1954
These are the settings the thunderbolt had.
Port Ratio: 4/5 Port
Chopper Level: 7
Blower: 6M Reverse Wired
RPM: 4
UPDATE: This siren no longer has its head only the blower pipe stands.
This siren is disconnected.
San Angelo, TX Siren Map - www.google.com...