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by Synther
Thu Jun 08, 2023 7:07 pm
Forum: Main Outdoor Warning Sirens Board
Topic: Whelen Siren Failures and Malfunctions
Replies: 12
Views: 30717

Re: Whelen Siren Failures and Malfunctions

Most of the examples linked above are older units that are not maintained regularly. It is important to note that the company typically does not install sirens, as that is handled by licensed companies who contract for them. Poorly maintained and installed systems by these dealers should not be repr...
by Synther
Thu Jun 08, 2023 6:42 pm
Forum: Main Outdoor Warning Sirens Board
Topic: How do I wire an STH-10 to a motor starter specifically the RC5.
Replies: 4
Views: 4500

Re: How do I wire an STH-10 to a motor starter specifically the RC5.

Unfortunately it appears you are out of luck. There are some options that can allow you to run your siren off grid, but those are very expensive and borderline impractical. If you do find access to 3 phase power, wiring should be fairly simple and you can find a complete wiring diagram in literature...
by Synther
Wed Jun 07, 2023 7:31 am
Forum: Main Outdoor Warning Sirens Board
Topic: What is the Story Behind The "TWS-29X" Sirens
Replies: 3
Views: 2524

Re: What is the Story Behind The "TWS-29X" Sirens

HSS is a Danish company who sells Whelen in Europe and the Middle East. They installed and presumably maintain the Whelen systems in Denmark and Saudi Arabia, the first picture is actually a Saudi Whelen I believe.
by Synther
Tue May 16, 2023 8:48 am
Forum: Mystery Sirens
Topic: Mystery siren in Gornji Milanovac, Bosnia & Herzegovina
Replies: 1
Views: 5321

Re: Mystery siren in Gornji Milanovac, Bosnia & Herzegovina

These are sirens developed by the Mihajlo Pupin Institute in Belgrade, commissioned for use by the ministries of Defense and Energy. The system was developed in 1988, with the variant shown above being installed shortly after. Đerdap HPP, Limske HPP, Rudnik Gornji Milanovac Dam, and MEC Bitola are l...
by Synther
Tue Apr 25, 2023 8:19 pm
Forum: Main Outdoor Warning Sirens Board
Topic: How do I get the bottom part of the motor off my STH-10
Replies: 6
Views: 1723

Re: How do I get the bottom part of the motor off my STH-10

What exactly are you trying to achieve? I'm surprised a newer STH-10 would need a rebuild. To remove the motor, you need to first remove the chopper, which will then expose the bolts holding the motor face to the stator.
by Synther
Fri Apr 07, 2023 8:08 am
Forum: Main Outdoor Warning Sirens Board
Topic: Miscellaneous Siren Photos Thread
Replies: 377
Views: 709522

Re: Miscellaneous Siren Photos Thread

Photographed the noisemaker in Mapleton from a flight of stairs down the street.
DSCN5548.JPG
DSCN5548.JPG (8.65 MiB) Viewed 8637 times
by Synther
Mon Mar 27, 2023 2:05 am
Forum: Siren Maps
Topic: Dual End Fedelcode Siren Map
Replies: 3
Views: 2423

Re: Dual End Fedelcode Siren Map

Not sure if it's been too long since the last post, but there's an inactive? Mach. 5 in Bridgeton, IN: Coordinates: 39.64852, -87.17368 Street view: https://www.google.com/maps/@39.6486969,-87.1737852,3a,41.3y,155.32h,103.13t/data=!3m6!1e1!3m4!1shlWK2-ZE0J5tpcKvSpTe0w!2e0!7i3328!8i1664 Added, glad ...
by Synther
Mon Mar 27, 2023 12:15 am
Forum: Main Outdoor Warning Sirens Board
Topic: Restoring one of Milwaukee's Gasoline Mobil Directos!
Replies: 334
Views: 200170

Re: Restoring one of Milwaukee's Gasoline Mobil Directos!

Brushless motors and relays are irrelevant. Gasoline engines are essentially giant spark gap transmitters. Back on topic.

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