ATI HPSS32R's in Menominee, Michigan - A HUGE DISCOVERY

[CycloneFan125]

Credit to firepro1120 for originally finding these very rare rotating ATI HPSS32's. I'll definitely be up here sometime! Even if it were only one it would still be a huge discovery but having 3 is even better.
https://www.google.com/maps/d/viewer?mi ... 00001&z=14

[uncommonsense]

Sorry but forgive me for being more distracted by the lovely installation on the first Alertronic. We have extra cable...what do we do? Wrap it around the pole!!! Good grief!

[DJ2226]

Here's another interesting thing that makes the system even more rare. Notice the rotators on the Alertronics? Those are P-15 platforms. These are the oldest known Alertronics that are still standing.

[4J25]

Just what I was thinking. Amazing find!

[DJ2226]

Now that I'm looking at these sirens on my desktop I can see them more clearly. These sirens are actually HPSS16Rs. The giveaway was the controls. ATI's controllers come in two sizes, one for 1600 watts and one for 3200 watts, similar to Whelen's controller enclosures. One 1600 watt amp requires two 12VDC batteries in series, while 2 amps need 4 batteries. It appears that these are ATI's original rotating sirens where they stuck one 400 watt driver, or possibly four 100 watt ones, behind each horn. Apparently They wanted to produce a siren that could compete with the ASC T-135ACDC and Whelen WPS-4008 while it was still sold and eventually decided to double the output on each horn.

Here's one of Menominee's HPSS16R's:
https://www.google.com/maps/@45.1180349 ... 312!8i6656

This is one of Forsyth County's HPSS16R's. It has two horns instead of four but pushes the same 1600 watts.
https://www.google.com/maps/@34.2947873 ... 312!8i6656

This is one of Longmont, CO's HPSS32Rs. These are the only true rotating 3200 watt ATI sirens found in the wild so far. Notice how much bigger the cabinet is compared to the sirens in Menominee.
https://www.google.com/maps/@40.2031914 ... authuser=0

Here's one of Fosyth County, GA's omni HPSS32's for reference.
https://www.google.com/maps/@34.1591776 ... 312!8i6656

[siren fan]

So the ATI's replaced the Allertronics?

[lkreykes]

So the ATI's replaced the Allertronics?

That's what the assumption is, although throughout the different Streetview pictures the Alertronics do move.

[Stevan Z]

Someone get out there as quick as possible to film those Alertronics if they're still active and up.

[Some_3t22s]

Here's another interesting thing that makes the system even more rare. Notice the rotators on the Alertronics? Those are P-15 platforms. These are the oldest known Alertronics that are still standing.

Really? I didn't notice that until you pointed it out. That marks the age?

[nvanw27]

Here's another interesting thing that makes the system even more rare. Notice the rotators on the Alertronics? Those are P-15 platforms. These are the oldest known Alertronics that are still standing.

Really? I didn't notice that until you pointed it out. That marks the age?

the allertronics are up but inactive