Whelen Omnidirectionals and 2t22 MICHIGAN questions

[whelenmike]

Trying to record these old sirens is something relatively new to me. It seems that I get interested in something at the right time, I went to check out 2 Detroit Thunderbolts that have ALWAYS been there and both were GONE and REPLACED with new equipment. I was suprised.. It had to have been done within the past 5 months.

[fstbolt]

I know about a RED 2/3t22 in
Birch Run Michigan, If you wanna see one.

[EL1998P71]

I saw this while going thru Marine City (MI) today.
Is this a 2t22?


It sits atop the police station/Municipal building. I'm going to go back this Saturday to get better pic's.

Here's a closer shot..

[Jim Z]

that's an STH10.

[Robert Gift]

The air filter in my Jeep can outlast a Whelen siren.

That is so funny. We're all laughing, J. Thanks.

What is the port count of the Sterling shown above? Is the far stator an octave higher?
Looks like it was kept well oiled.

I would remove those two weather cowls and let the siren speak louder.

Would the lower photo be an STH 12 --12 cones?

[SirenMadness]

The number in the name of "STH-10" stands for the horsepower in the siren, not the number of ports on it.

The red Sterling siren shown has sixteen-to-eight port-ratio.

[kagome122885]

If these Whelen's are supposed to last 30 to 40 years, then how come some of our 3016s already need replacing. and by the way, proper maintenence would end up being thousands of dollars per year at least according to the Franklin County EMA.

Sounds like a big excuse to me!