San Francisco during the Apollo 11 splashdown

[Hacksaw]

A news clip from 1969. It's the STL-10(?) going off to celebrate the Apollo 11 splashdown, in San Francisco CA:

https://diva.sfsu.edu/collections/sfbat ... nvDJjoQk9t

[Palmspringslocator2]

Always love seeing old California stuff being documented!

[ModifiedCyclone125]

There's also this:
https://diva.sfsu.edu/collections/sfbatv/bundles/238513

I think the Heath Engineering "Instant-Blast" horizontal siren can be heard going off at 0:09 in this!

[ArxCyberwolf]

That is indeed the old Ferry Building Heath!

[Greenrid]

There's also this:
https://diva.sfsu.edu/collections/sfbatv/bundles/238513

I think the Heath Engineering "Instant-Blast" horizontal siren can be heard going off at 0:09 in this!

This is amazing! If I'm not mistaken (which I usually am), you're actually the first siren enthusiast to find this and actually recognize what it is!
Just like any other 12 port siren, it definitely sounds like a 2001-130. I also don't really think that it really lives up to its name, either...

It's also a shame that it's mostly drowned out by the STL-10s. I guess it's still a real recording of it!

[siren fan]

That thing sounded sickly. Maybe it's the old sound quality.