I faded it out at the end since it was just going on and on. Has a slow wind up and the coast down went on for at least 2 minutes. To run up their siren for a short blast for me to record. The fire personnel at the Grayson County airport were good enough It then amplifies the sound through a pair of high. Grayson County, Texas, Airport Fire Department Siren. The Rumbler system senses the primary siren tone signal, and reduces the signals frequency by 75 percent. This siren was removed and sold at auction in late 2004. This siren was removedĪnd sold at auction in late 2004. The round horns are much simpler to manufacture. Theyĭiscontinued the square horns and went to the round horn design because He said there were only aboutĥ0 of these square horn models made in the early to mid 1980s.
Replied to me when I emailed Sentry with a question about this siren. 1st part of test.įederal 2t22 Attack Signal. This siren was removed and sold at auction in late 2004.įederal 2t22 Alert Signal.
The Federal 2t22 is probably one of the nicest sounding of all the mechanical sirens. File Size 1.8MbĪmerican Signal T-135 Attack Signal (Recording cut short due to passing truck.) File Size 800KBįederal Signal - 2t22. American Signal T-135 Steady Tone 1st part of test. Removed and sold at auction in late 2004. It has the weird of quality of sounding like two completely different sirens starting upĪt the same time. This siren was located about a mile from my house. Allen Texas, Fire Station Number 2 Monthly Test. I split each set of test recordings up into the first minute and the last minute of the test respectively. The rumbler interacts with most 100/200 Watt siren amplifiers and provides secondary, low-frequency duplicate tones. off, 1 min "Attack" (on-off, wavering signal). Recordings Of The Old Allen, Texas Siren Systemįor monthly siren tests the City of Allen would run their old sirens for a 3 minute test. This recording is of the first one minute cycle. Was removed and sold at auction in late 2004. I was really impressed! They ran it for 2, one minute alertĬycles about 3 minutes apart during their montly test. I had never heard one these until May, 2 2002 when I made this Valley View Thunderbolt 1000 Attack Signal File Size 930kbĪlerting Communicators of America - Hurricane 130 MKII, Garland, Texas Fire Station. Valley View Thunderbolt 1000 Alert Signal File Size 800kb It is important to read and follow all instructions shipped with this product and the original product. I have a page covering the hook-up and overhaul of this siren here on my Valley View project page. A0 0219 Safety Message to Installers of Siren Speakers People’s lives depend on your proper installation and servicing of Federal Signal products. Here are a couple of recordings of the Valley View Texas Thunderbolt Federal Signal Thunderbolt 1000 Valley View, Texas. These files are in MP3 format and are about 400Kb to 1MB in size.Īll of these sound files were recorded by me and are the property of this web site. Intended for attack warning only have been taken down or are rustingĪway pitifully at the top of their poles. Regularly threatened with natural disasters (tornados, floods etc.)Īre still using outdoor siren systems. Many other uses but during the cold war virtually every city had a siren warning system Sirens were long used before the cold war to signal warnings of air attack and This isn't an extensive siren catalogue by any means but I thought I would show some examples of cold warĮra sirens deployed for civil defense use. A Civil Defense Museum wouldn't be complete without a section on warning sirens.
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