San Francisco ATI Siren Test

[Siren_Dude]

My first full day in San Francisco was on Tuesday (July 20th) and I wanted to find a ATI siren because I knew they went off at noon. I found this siren at Bay and Kearny, which is right near the water and the piers. I was heading to the Ferry Building but saw this one and it was close to 12:00 so I recorded this one.

http://www.youtube.com/watch?v=WmX4DSGvPY4

*I will upload all the pictures of sirens I saw on my trip next week, most were down the coast of california for tsunamis and earthquakes*

[Allertor113]

Nice recording! Do all ATI's use STL-10/7.5 sounds?

[coppercarl]

Nice recording! Do all ATI's use STL-10/7.5 sounds?

All the San Fransisco ATI's do. The EMA director wanted them to sound familiar since most of that system was composed of STL-10's so he had them put a sound card in with an STL-10's recording.

Feel free to correct me if any of that is wrong.

[ginbot86]

All the San Fransisco ATI's do. The EMA director wanted them to sound familiar since most of that system was composed of STL-10's so he had them put a sound card in with an STL-10's recording.

Yes, the SanFran's ATI soundcards have an STL-10 recording on it. However, the lower frequency of the recording isn't too healthy for the sirens' compression drivers.

[Crazywarriorman]

You can't see it on this one, but on most of the older ATIs in San Fransisco they installed them on the STL-10s old mount.

[Daniel]

I remember seeing mainly STL-10's before they were replaced, but there were also several STH-10's and Model 5's around the city.