Federal Signal Thunderbolt 1000T | Full Alert | Union Township, OH | 5/6/20 @SF57_Sirens
Federal Signal Thunderbolt 1000T | Full Alert | Union Township, OH | 5/6/20  @SF57_Sirens
Uploaded May 2020 | Updated September 2026, 2 weeks ago
Went to this Thunderbolt in Clermont County on Wednesday as I have never heard a Chopper 5 5/6 port 1000T before. This siren is located near the intersection of Tealtown and Baldwin Rd. quite literally in someone's front yard. I set up roughly a little over 100ft from the siren on the side of the road to get this shot, and I think it came out well.

All I can say is Chopper 5 Bolts are pretty loud, and the Bolt sure did rumble the ground a bit when the horn faced towards me. Probably not the loudest Bolt I've heard though, although I was wearing hearing protection for the majority of the test, so I can't say that with 100 percent certainty.

Unlike some of the other Clermont County Thunderbolts, this one has a proper 8 second wind down on the Agastat unless it's programmed into the CompuLert RTU to do that. All in all it was a successful test and it was great to get another unrecorded Clermont County Thunderbolt recorded, as well as to get to experience my first Chopper 5 Thunderbolt 1000T. At the end the siren you hear wind down is a Werden Siren P-127, you may be able to hear it throughout the test as well if you listen closely. Enjoy!

Clermont County tests sirens on the First Wednesday of the month at 12 noon.

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Camera(s) Used: Panasonic HC-V380 (main video), Canon Vixia HF-R700 (audio), Canon Powershot SX50HS (Intro Photos)

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SF57 |

Federal Signal Thunderbolt 1000T | Full Alert | Union Township, OH | 5/6/20

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