FS&S Thunderbolt 1003 |Undulating Hi Lo| (Walcott IA)

After the first tests of the day we were in the Quad Cities metro going to different sirens before we went to Walcott for the test. Me and Dylan finally got ahold of the fire chief again and finally went there for their weekly pager. It usually automatically sets of the thunderbolt but they pull the pager out from it doing so. This thing was so loud, it was on par with Keota. This was an awesome signal to hear for the first time. Also got some killer ambience of walcott too. Devices Used: Canon Vixia HFR700, S23, Mini 2SE, SX540 Enthusiasts: ‪@xXSo1arGamingXx‬ ‪@uwtitanfan‬ ‪@WasherBoy2016‬ Port Ratio: 5/6 Signal Type: Undulating Hi Lo Duration: 1 min Distance: 250FT Temp: 75 Recorded 7/7/25 Serial number: T3729-D Walcotts Thunderbolt is only a fire siren. Their T128s test the First tues at 10AM.