Definetley an oddball this siren. Whoever made this custom housing for it long ago must've got inspiration from the Thunderbolt projector design since each projector reminds me of a Thunderbolt Horn.

Thankyou for the street view links! Yeah it would've being nice if the old street views were a higher resolution. Would be nice if both Allertors turned up somewhere sitting on the ground in the least expected place waiting to be discovered. If they were found it would be great to know which of the ...

Maybe it could have being one of the original Allertors that was originally being tested somewhere recentley in Joplin after being removed 9 years ago. I looked at the news story from back then & the two Allertors were originally installed in 1970. Makes me wonder if these early Allertors were 1...

Thankyou Sir! Until now the rotor design has being a mystery to me on these. I see it has 4 centre blades coming out of the centre of the rotor. It almost reminds me of a 10/12 port Federal Signal rotor in a Mobil Directo, Allertor since they also have 4 large blades in the centre.

Awesome Sentry Defender! Just wondering would you please take a photo of the front of the rotor so that the rotor design can be seen?

Sterling?? https://www.google.com/maps/place/109+W+Pine+St,+Crystal+Falls,+MI+49920/@46.232388,-88.4480876,3a,32.1y,223.55h,95.64t/data=!3m7!1e1!3m5!1sTwF1yCR0XbVsDOHimTMnyg!2e0!3e11!7i3328!8i1664!4m5!3m4!1s0x4d515fabfcb56671:0x5a25bd251a6890f7!8m2!3d46.2321133!4d-88.4473469 Maybe or an old Federal...

Very nice. It is a unique siren that one.

Awesome video! Thankyou for showing the anatomy of this Federal! Not everyday the innards of sirens are shown in plain sight! Just wondering this a 16 port siren?

Gday, nice Carter siren! It looks like it is a 10 port singletone. I'm guessing it is from the 1960s or 1970s. I myself got the baby models of sirens similar to your big siren, I have Minimites. What you may need to do is when putting more photos up is go to post preview I think it is to see if all ...

Very cool find. Just I am curious if there is anything different with this earlier model to the later model SD-10s. I did not see much difference in design with the housing on that siren.