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by Noob
Tue Feb 15, 2011 6:35 am
Forum: Other Warning Systems - Indoor, Outdoor and Vehicular
Topic: How many companies re-branded the Federal A?
Replies: 6
Views: 5941

Perko had a Federal A under it's name.
by Noob
Wed Feb 09, 2011 10:56 am
Forum: Main Outdoor Warning Sirens Board
Topic: Identifying a monster, threee chime AIR RAID SIREN
Replies: 5
Views: 2601

Pardon me. I am a whistle guy first. Siren guy second. On two tone sirens, isn't the second tone just an offset chopper that hits at a different time but with the same interval?
by Noob
Tue Feb 08, 2011 12:50 pm
Forum: Main Outdoor Warning Sirens Board
Topic: Identifying a monster, threee chime AIR RAID SIREN
Replies: 5
Views: 2601

Identifying a monster, threee chime AIR RAID SIREN

Guys,
Snooping around, I found this behemoth, three chopper, air raid warning siren. Any clues to the origins?
Image

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