There is a video of an Alertronic 6000-R which has no wind-up but does have a wind-down. It is on the Siren Archive. I believe the siren was taken down and replaced with a Hornet.

Could you imagine being blasted by that thing driving by it when the floodgates open?

Needs 400v doesn't it?

They did neither. Each was their own design. The Quadrant/iForce is called such because each cell is divided into quadrants and each quadrant has its own compression horn and driver. The Modulator has four drivers in each cell, each dumping all their energy into a 360-degree exponential horn created...

Our local weather radio station, KEC59, uses private tower facilities, which are furnished by KWCH-TV in North Wichita.

Do any of those older Federal fire sirens rotate by any chance? Also, how loud are they?

No, they are stationary. And as for sound output, I would say about the same as a Model 3, but I've never heard one in person.

The "knobs" are grease cups. You pack them with grease and twist them on to lubricate the bearings. You would only put them on a little, then after a while tighten them down a turn or so to force clean grease into the bearing to keep it properly lubricated.

I believe that FEDELCODE stands for FEDeral ELectric CODEd.

There's a digital tone generator for you.

A certain number of Simplex horns were made by Faraday, and so were some of Wheelock's electronic sounders.