The Siren Board

I think square/rectangular ports produce a high sounder output, since there was a siren called the ACA Sentry 95, which had round ports, and therefore, led to its inefficient 95dB sound.

It could be, but the upper cone looks a lot like that of a 3T22, so it could be a Super Banshee, or a 3T22 with skirts instead of horns. I'm just going to assume a Super Banshee

I think the Hurricane was discontinued in the mid 1980's due to maintenance problems, and was superseded by the P-50/T-135AC siren.

That is a Darley siren, because of the curved cowl and round top.

So, I guess this has a custom tone module, and it has Whelen boxes, not Federal boxes. In addition, with the shape of the Whelen rotating sirens, such as this one and the modern ones, maybe these could be nicknamed "The Electronic Thunderbolt."

Yes, those are Whelens, and the information about the sirens can be found on the SafetyCom web site, since they were the installers of the outdoor warning system.
http://www.safetycom.com/spotlights/Oklahoma_city.html

I saw a picture of a Thunderbolt siren, so it could be a Thunderbolt 1000T/1003 set on a high voltage, which is why it's so high pitched.

I think this a custom 16-port siren.

It looks a lot like 2 Allertors resting on its side with no horns, which is very unusual looking. I wonder what it sounds like.

I think that's either a Decot variant, or a rare Erickson fire siren.

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