5-port Unknown Siren Demo

[Charlie Davidson]

http://www.youtube.com/watch?v=dHHtvmit7U8

[Archon]

This is a Old General Electric Siren Seen one before some where

[Allertor113]

Looks like one of those german "Pneumatic" Sirens iv seen on Youtube.

[dilloncarpenter]

Soccerdude, have you ever considered a variant of the old sirens with the motor on top, and a cone shaped rotor/stator? That's the best match I can think of.

[Charlie Davidson]

Soccerdude, have you ever considered a variant of the old sirens with the motor on top, and a cone shaped rotor/stator? That's the best match I can think of.

I've seen an OLD picture of what I think you're talking about before, it's somewhere on this board. It's of some guy and a teenage guy who are putting a cover over the motor. The chopper and stator look just like a short cone pointing up. It looks as if it's designed to try and direct the sound output down instead of straight out, I have no idea what it's called.

But I don't think that's what this one is, because this siren is MUCH smaller than the one in that picture. The chopper in mine is about the same size as a Model 2 chopper, except this siren's chopper is actually taller and the ports are slightly larger.

[SirenMadness]

Looks like one of those german "Pneumatic" Sirens iv seen on Youtube.

The HLS have a smaller rotor than that, plus only four ports and no "impeller" inside.

[Daniel]

Nobody was ever able to figure out what company built those trapezoidal sirens from WWII (Bullard was one guess), but someone on this board acquired one several years ago and dissected it for our viewing pleasure. There was no name tag except one indicating that it had been built for the Navy, and there was a rotating shutter above the main stator (but shaped just like it and nearly invisible when open) which could block the output for coding purposes. I have seen two of these that are still in use in northern California.