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 Post subject: Tsunami sirens
PostPosted: Mon Apr 10, 2017 5:17 pm 
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Angus Cheeseburger
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Joined: Thu Feb 19, 2004 5:09 pm
Posts: 4159
Location: CN88st
This tsunami siren is located near Ocean Shores, WA.

Birch Bay and Blaine are getting them soon.

Does anyone know what frequency triggers them to alarm?


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Grays-Harbor-Siren.jpg
Grays-Harbor-Siren.jpg [ 78.57 KiB | Viewed 889 times ]

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 Post subject: Re: Tsunami sirens
PostPosted: Mon Apr 10, 2017 8:38 pm 
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Joined: Fri Apr 30, 2004 8:28 pm
Posts: 1775
oh no...

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 Post subject: Re: Tsunami sirens
PostPosted: Mon Apr 10, 2017 9:05 pm 
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Mr. Bad Example
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Joined: Sat Feb 21, 2004 10:11 am
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Location: On the road again
LERN or NLECS.

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 Post subject: Re: Tsunami sirens
PostPosted: Tue Apr 11, 2017 4:06 pm 
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Joined: Tue Jul 03, 2007 8:11 pm
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Location: Kitsap & Olympic Peninsulas
Depends on the area. They are all different.

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 Post subject: Re: Tsunami sirens
PostPosted: Wed Apr 12, 2017 10:59 am 
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Site Admin
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Posts: 1847
Jim wrote:
Does anyone know what frequency triggers them to alarm?


I don't suppose you just returned from a trip to Dallas ?

https://arstechnica.com/information-technology/2017/04/dallas-siren-hack-used-radio-signals-to-spoof-alarm-says-city-manager/


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 Post subject: Re: Tsunami sirens
PostPosted: Wed Apr 12, 2017 11:51 am 
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Angus Cheeseburger
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Joined: Thu Feb 19, 2004 5:09 pm
Posts: 4159
Location: CN88st
Was nowhere near there! :)

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Jim N7UAP - Bellingham, WA / InterceptRadio.com


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 Post subject: Re: Tsunami sirens
PostPosted: Thu Apr 13, 2017 7:04 am 
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Joined: Sun May 09, 2010 5:45 pm
Posts: 95
I believe that quite a few along the coast actually controlled by satelite.


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 Post subject: Re: Tsunami sirens
PostPosted: Thu Apr 13, 2017 2:19 pm 
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Joined: Wed Mar 10, 2004 2:32 pm
Posts: 91
Location: FB2 Simulcast
The attached pic looks like a VHF 1/4 wave mast mounted about mid point on the pole ?

I recall that both Oak Harbor and Coupeville use a 155.xxx freq w / DCS for voice ( public address ) override.


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 Post subject: Re: Tsunami sirens
PostPosted: Thu Apr 13, 2017 10:18 pm 
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Joined: Wed Jun 27, 2007 10:55 pm
Posts: 449
Location: Britain
Rich wrote:
Jim wrote:
Does anyone know what frequency triggers them to alarm?


I don't suppose you just returned from a trip to Dallas ?

https://arstechnica.com/information-technology/2017/04/dallas-siren-hack-used-radio-signals-to-spoof-alarm-says-city-manager/


I like the way they think.

Find a system, figure out how it works, then test it....

Not cool that they kept doing it but........

They just need to hire them to work at 'the radio shop' to keep them on the right path..

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