The Siren Board

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 Post subject: Re: Sick sirens!
PostPosted: Sun May 03, 2020 7:19 am 
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Jake_7367 wrote: *
[youtube]www.youtube.com/watch?v=3ApQPZ0w798[/youtube]

This 3T22 in Portage, OH seems to need some maintenance. But the wind up throws me off. Sounds too linear to be single phase.
What are you talking about? Its fine. If there's anything off its its the recording.


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 Post subject: Re: Sick sirens!
PostPosted: Mon May 04, 2020 10:35 am 
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The pitch fluctuates slightly.
OP also said it sounded sick in the comments.


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 Post subject: Re: Sick sirens!
PostPosted: Mon May 04, 2020 11:05 am 
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Yeah I agree. The pitch does waver a tad, almost as if it's got worn out brushes. Can't be though because judging by the casing on that motor, it's not single phase. I honestly have no clue what it is because there's not much that can go wrong in those 3 phase motors.

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 Post subject: Re: Sick sirens!
PostPosted: Tue May 19, 2020 1:21 pm 
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https://www.youtube.com/watch?v=1q1WCF5z7MM&t=80s

Dying batteries? The pitch is way off.

https://www.whelen.com/mass/tones

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 Post subject: Re: Sick sirens!
PostPosted: Tue May 19, 2020 6:18 pm 
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That's an actual tone from Whelen, and it's on an older controller, hence the weird pitch. When electronic sirens get low batteries, the pitch doesn't usually lower like it would on a mechanical siren.

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 Post subject: Re: Sick sirens!
PostPosted: Tue May 19, 2020 6:50 pm 
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nvanw27 wrote: *
That's an actual tone from Whelen, and it's on an older controller, hence the weird pitch. When electronic sirens get low batteries, the pitch doesn't usually lower like it would on a mechanical siren.
Did Whelen even offer the alternate toneset on the old controllers?

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 Post subject: Re: Sick sirens!
PostPosted: Wed May 20, 2020 11:07 am 
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Yes, if you asked for it.

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