The Siren Board

I can remember the STL-10 that was located in a nearby city. This siren had a beautiful sound to it, but was scrapped when it was retired by a Whelen omni directional unit. The local police station had the pull-lever (PB) box, which ran a semi-coded fire signal of three 20 second blasts. However, the downtime between the first and second blasts was only three seconds. While the PLB worked just fine on the Model 5, the STL-10 would barely start downwards, when it went back up again. You had to really listen to tell if it had been set-off for fire or tornado.

On U.S. Highway 12, on the south shore of Wamplers Lake, which is located in northwest Lenawee County, there is a 1978 vintage STL-10A that runs off 440 voltage. This siren is the best STL-10 I ever heard. The motor pickup and wind-down is just like an STH-10 that is very, very fast. I always enjoyed hearing that siren along with the two nearby STH-10s running for a three minute fire cycle. Likewise, this siren was even more effective at night, when the wind was blowing to the north. Many people have claimed they heard this siren up to seven miles away in the wee hours of the morning.

When I lived in Omaha, the STL-10 in Irvington would sound three minutes of attack for fire calls, and I would hear it three miles away inside my house. It had a rather spooky, echoing sound, but much nicer than the 2001 that I couldn't hear only 1 1/2 miles away.

How much do the STL's weigh? The STH's must be very similar in weight, but a little more for the three more projectors.

I think the STL10 has 7 horns.

Yes, it weighs about like an STH10.

I have a 1950's STL with a GE motor IT weights about 600lbs The motor by itself weights 200lbs it's a beast to move around in the garge.

AfterDark67 wrote:I thought STH/STL standed for Single Toned High/Low, and the 10
standed for 10 H.P.

Nope. Special Tone High/ Special Tone Low.

There are two towns close to me that have STH-10's. Our own town has a common model 5. I would like to take some pics of all three and add them to the siren archive sometime after i get my permit.

Yeah, the STH-10 has 5 more ports. I thought that the STH-10 had 10 ports. With a single phase, how much power would you be sucking up? Could some one give me a comparison to another household or garage thing that would use just about as much? (such as a about 6 TV's or something similar to that) Also, would you(the reader) say that these things are expensive to run?

trafficsignals4ever wrote:

holler wrote:Could someone post a recordings of both for a comparison? I've heard a STH-10 before but never a STL-10.

Isn't the Thunderbeam based on the STH-10?

Here is an STL10 recording: http://www.longislandfirealarm.com/Mill ... -Sig16.wma

Yes the Thunderbeam is the rotational version of the STH10.

Sorry to bring up and old topic, but was just gonna let the STL10 lovers know that this siren has been replaced by an Eclipse. Not sure if it is an 8 or NH yet. The STL10 is currently being refurbrished, so it won't bite the scrap pile.

http://www.longislandfirealarm.com/foru ... php?t=1010

I have been dreaming up some custom housing's for a STL-10 for when I get one. I will upload them later tonight, or after school.