The Siren Board

Posted: **Mon May 04, 2020 7:05 am**

Many of the Bullard sirens used in San Francisco before the STL’s replaced them were six-port, dual-headed horizontal sirens.

Posted: **Fri Jun 05, 2020 7:47 am**

Any pics of the 6 port horizontals? (doesn't have to be from SF)

Third St. Bridge siren in San Francisco