u/Aphidaks69

Pls tell me if I missed anything, 103 in total

Edited 2026/09/27 - Added 18 manufacturers, 122 in total

• Federal Signal (FS)
  • Federal Sign and Signal (FS&S)
  • Federal Enterprises (FE/FEN)
  • Federal Electric (FE/FEL)
• American Signal Corp. (ASC)
  • Alerting Communicators of America (ACA)
  • Biersach & Niedermeyer Co. (BNCO)
• Alerting Solutions Incorporated (ASI)
  • Hörmann America
  • Raytek Inc.

     

• Hörmann Warnsysteme
• Excel Alerting Systems (EAS)
• Sentry Siren
  • Sterling Siren
  • Inter-State Machine Company
  • Uncas Specialty Company
• Acoustic Technologies Inc. (ATI) 
  • Shamrad Electronics
• Lion King
• Whelen Engineering
  • HSS Engineering
• Harry O Ricci Siren & Signal (H.O.R)
• Bayless & Miles Siren Manufacturing Company (B&M) 
• W.S. Darley & Co.
• Soundmaster Signals
• Loudoun Communications
• Decot Engineering Works
  • Decot Machine Works
• Eaton Corp.
  • Cooper Electric
• SoCal Edison 
• Canadian Line Materials (CLM)
• Engesig
• Carter & Co.
• Elektror
• CICCA
• Siemens
• SiRcom
• Telegrafia
• Klaxon Signals
• Kockum Sonics
• Gamewell
• Yamaha
• Toshiba
• Motorola
• VEM   
• Moteurs Fox 
• Meerkat
• General Electric
• British General Electric Company
• Motorola
• University of Oulu
• MariSci CNO
  • MCAlert
• Dennis Ariola
  • USAid
  • Catholic Relief Services
• Sireno Signal Company
• Hwajin
• Ompoom
• Kheraj
• Custer Electric
• Yahagi
• Rontan
• Deif
• Tri Lite
• Seikosha Manufacturing Co.
• Jubilee
• VILMA Motors
• Genave
• Rosenbauer
• Wenhua Engineering
• Archer
• Schwarze Electric Co.
• Eagle Sirens
• C.A.M. Manufacturing Co.
• KMsecur
• Kingvox
• Alert Systems Inc.
• Sirena S.P.A.
• Perko
• Selay Electric
• Hedberg Super Sirens
• LAWS Systems
• Ercole Marelli
• Siracode
• ZME Motoruch
• Thor Guard
• La Sonora
• Pintsch Bamag
• Honeywell Gent
• Clayton Founder & Siren Co.
• SIIS
• E.A. Laboratories
• DISA
• Moravian Electrotechnic Works
• VÚES Brno
• Luz Sirene
• Kingstar Sound Industry
• SVET
• Sparton Corp.
• Comtel Manufacturing
• Swedish Electric Co.
• E.D. Bullard Company
• Julius Pearse Fire Department Supply Co.
• Alarmes Tucano
• Compliance Technologies Inc.
• Evensirens
• Seguridad O Seguridad (SOS)
• Constructions Electriques Du Nord
• Sirenco
• Helin
• William A Box Iron Works Co.
• Petrier Tissot & Raybaud
• General City Service
• HOMEZ
  • COLNOVA Sirline RAY
• Ellaqueta
• Warning Systems (Civil Defense)
• Pierre Thibault, Ltd.
• TESLA BLATNÁ
• Elektro-Arola Oy

Somebody should go ask the barangays near where YummyCustardCake found the thunderbolt, there may have been a system installed since I doubt the americans would use just 1 thunderbolt for entire ambuklao dam, also it is not an LK thunderbolt

You're welcome

I thought it was gonna release on the week of July 20th, but It would be understandable if they didn't post due to the sheer amount of questions

So while I was trying to make some sirens in my simulator SirenOSC, (sorry for the frequent sirenosc related posts) I realized that some sirens like the Federal Signal 2001-130 had some rasp to them that I couldn't replicate using the effects chain I built into the simulator. I tried recreating it with white noise my debugging program but it didn't sound good. I tried using a vibrato that cycles very fast, and it worked fine in export, but it was laggy when I coded it into the site. And it lacked the high pitched noise that comes from the rasp. I'm trying to figure out if the majority of the rasp comes from how the vanes interact with the air, or something about the housing, or chopper.

this is probably a stupid question but i want to make a 1:1 scale thunderbolt. i know that it is driven by a pinion gear and it has a clamp attached to the motor tube pipe but how does it rotate independently from the surface, like how is it floating? is it just connected to the plate and just handles the friction? oil? bearings?

The sirens I am talking about are the bigger ones, maybe at least as big as a Model 2 or something. Planning to make something since getting an actual siren here is am actual pain in the ahh and costs a fortune just to transport

Im kinda dumb with thunderbolts lol but I already know everything from the wiki page, civil defense museum pages, and federal signals manuals on it, also chopper levels and reverse wiring

I need this for a video I'm making about thunderbolts. Talking about the Chopper RPM btw