Glenview, IL's Thunderbolts and SRN are due to be replaced soon (as of 8/23). It seems that all of the sirens were manufactured in December of 1980.
FS 2001-SRN - Located on Old Willow Rd/Johns Dr 750 ft N of Johns Ct. Seems this unit is also being replaced. Photos taken 8/31/23, copyright Christopher Aylward.
FS Thunderbolt 1000AT A007627N80 - Pfingsten Rd & Maple Leaf Dr. Photos taken 8/28/23, copyright Christopher Aylward.
FS Thunderbolt 1000AT A007626N80 - Glenview Fire Station 7. Photos taken 8/28/23, copyright Christopher Aylward.
FS Thunderbolt 1000AT A007617N80 - Richard E Johns Park. Photos taken 8/28/23, copyright Christopher Aylward.
FS Thunderbolt 1000AT A007623N80? - Pleasant Ridge Elementary School. SN is the same as the blower on the one on Glenview Rd in the forest. Photos taken 8/28/23, copyright Christopher Aylward.
FS Thunderbolt 1000AT A007623N80? - Glenview Rd 285 ft east of Woodmere Ln. Head and blower SNs dont match. Photos taken 8/28/23, copyright Christopher Aylward.