Oh my God....
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I'm assuming the old T-135AC is one that is non-active. I can confirm the T-135AC isn't active, it's actually completely disconnected as seen here, unless the wire for the siren was run elsewhere. 135 disconnected.png It’s not disconnected, the wiring is run thru the bottom plate into the pole. Tha...

There's a perfectly good site right in front of you, you just have to search!!! I wrote a siren essay too, a few years back and got a good deal of info from here, civildefensemuseum and some other sites I can't remember. That essay helped me better than my final exam lol (which I still did pretty go...

Jared H wrote: ↑

Mon Oct 23, 2017 1:40 am

Penetrators.

What type of Penetrators. Any 50s?

I'm assuming the old T-135AC is one that is non-active. I can confirm the T-135AC isn't active, it's actually completely disconnected as seen here, unless the wire for the siren was run elsewhere. 135 disconnected.png Hmmm.... I mean, I don't think they disconnected them, rather they abandoned them...

Let's backpedal a little bit, back to August. I called the city of Gainesville asking if they're testing their siren system. They said they are not testing due to malfunction and the city is waiting for the council to make a decision. So now to today. I called again, and they replied saying that the...

Here are some pics of the ATI. Rather than putting two 20MP pictures on here, I'll just include the link.
https://plus.google.com/117103923727010 ... nEpWGbnhdX

(Post 2/2)
Here are some pics from the recent upgrades. Key word is upgrades. Same sirens, updated controls. I'm not sure if they updated all the controls. (Rather than posting all the pics, I put a link since there are so many)
https://plus.google.com/117103923727010 ... eyter8AR5o

That would be interesting to see the ATI heads on a Whelen panel. They might just be installing them for now and installing the speakers at a later date. Since the ATI horns are 400 watts each you can wire them up to the panel as if it's a 2908. All they'd need to is add the two extra amps in whene...

(Post 1/2) Hello all, It seems the city of Plano is working on the Whelen 4008 replacements. Sirens 6, 9, 10 and 11 (the one with the missing back) were scheduled to be replaced this March (2017). Has anyone else reached out to Plano also? I'm curious to know, because I'm kind of hoping they keep th...