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Posted: Fri Jun 29, 2007 1:27 am
by Nelso90
Fennimore, WI has 2 model 5's very close to each other. One is a fedelcode 5, and the other is a 5T.

Posted: Fri Jun 29, 2007 3:49 am
by kswx29
Kiefer, OK has 3 Sentry 3v8s like 2 blocks apart from each other. One is on a hill, the other behind city hall and the third beside the FD.

Posted: Fri Jun 29, 2007 10:49 am
by Mr. Machine
Gaithursburg, MD... on top of the fire department / museum (if that's what it still is, I don't know nowadays) there are two red Model 5's side by side. I was in that area last week and saw them still standing. They can't be more than eight feet apart.

Posted: Fri Jun 29, 2007 12:14 pm
by Hope Creek ACA System
3t22 wrote:I've seen a Cyclone and STH side by side in NJ. The STH is a fire siren and the Cyclone is a warning siren for the Lower Alloy's power plant.

Yes I took that picture months ago before they got new T-121's, but the STH-10 is still there!

Posted: Sat Jun 30, 2007 12:47 am
by Matt Hackler
Here are the 2 Model 2's in Daleville, IN like Daniel said. They are both part of our system until Daleville purchases a 2001.

Image

Posted: Sat Jun 30, 2007 1:36 pm
by Conky 2000
I like how they painted those!

Posted: Fri Jul 06, 2007 2:58 am
by Daniel
Matt, how are they used? Is one a 2T? Are they both sounded at the same time?

Posted: Fri Jul 06, 2007 10:20 am
by Robert Gift
Matt Hackler wrote:Here are the 2 Model 2's in Daleville, IN like Daniel said. They are both part of our system until Daleville purchases a 2001.

Image
That makes no sense. So inefficient.
Their dB output does not simply add.
Would love to measure the output level of one, then both operating.
There would likely be cancellation issues if they attained the exact same pitch.
Would love to hear them "beating" because they likely will not attain the same pitch.

Posted: Fri Jul 06, 2007 2:24 pm
by Justin
Robert Gift wrote:
Matt Hackler wrote:Here are the 2 Model 2's in Daleville, IN like Daniel said. They are both part of our system until Daleville purchases a 2001.

Image
That makes no sense. So inefficient.
Their dB output does not simply add.
Would love to measure the output level of one, then both operating.
There would likely be cancellation issues if they attained the exact same pitch.
Would love to hear them "beating" because they likely will not attain the same pitch.
You might get maybe 1-2db gain when you have them both running. It would be noiser, but probably not louder.

Posted: Fri Jul 06, 2007 2:35 pm
by Robert Gift
Justin wrote:You might get maybe 1-2db gain when you have them both running. It would be noiser, but probably not louder.
Imagine spending all that money for another siren and getting only 1 to 2 dB gain?
It would be more, but not enough to justify double the cost. Big waste of money.