Mystery siren at a fire station

[ver tum]

http://www.youtube.com/watch?v=aKPc7tQetcs&fmt=18

I don't have a clue what this thing is. It has a low undertone in the background like a Sentry, but the pitch is too high. Anyone know what this is?

[Jim Z]

wild-arse guess is it's a Sterling 2V8.

[Crazywarriorman]

Looks more like a 3V8.

[ver tum]

I thought that Sterling 3V8's sounded just like single tone Sentries. This one could be single phase, or it could have a different motor or port configuration.

[Dillon Prater39485]

well it's definitely some kind of sentry

[zetronist]

I believe it's an old Sterling. It sounds like an M5, however it's vertically mounted and designed slightly differently. The video didn't get close enough to be sure, but I saw one of these somewhere a number of years ago. It definitely has that Sterling "octave" going on (dual tone/ octave apart)

John

[Daniel]

It is definitely not a dual tone. My guess is either a Sterling 2V8, a small HOR, or perhaps even a Federal Model 1 with a homemade housing.

[zetronist]

Daniel, if you listen closely, it's dual tone, an Octave apart, just like the M5.

[Daniel]

Daniel, if you listen closely, it's dual tone, an Octave apart, just like the M5.

What you're hearing is chopper or motor noise. The only sirens made in octave intervals are Sterlings and Sentrys, and none of their vertical models were this small.

[Modulator Master II]

Sorry for bringing this topic back, but I know this siren very well. It's at the Westwood Fire Dept (Cambria County Station 30), And it is a Darley 2V8.