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by Traxstar1825
Mon May 11, 2020 5:38 am
Forum: Main Outdoor Warning Sirens Board
Topic: Analog Siren Controllers
Replies: 6
Views: 3223

Re: Analog Siren Controllers

Yes it was very helpful! So is there anything mechanical going on inside the cabinet? Forgive me for my lack of knowledge on electronic sirens lol. Typically the only thing mechanical inside the controllers is a relay to activate the rotator on rotating arrays, but on controllers like ACA/ASC's con...
by Traxstar1825
Mon May 11, 2020 4:46 am
Forum: Main Outdoor Warning Sirens Board
Topic: Analog Siren Controllers
Replies: 6
Views: 3223

Re: Analog Siren Controllers

Also, if anyone has a picture of the inter workings of one of these cabinets I am very curious on how they are laid out.
by Traxstar1825
Mon May 11, 2020 4:45 am
Forum: Main Outdoor Warning Sirens Board
Topic: Analog Siren Controllers
Replies: 6
Views: 3223

Re: Analog Siren Controllers

Analog controllers basically generate their own tones using direct current. A full analog controller, like the SiraTone or early Alertronic ESC controllers use oscillators and such to generate the sounds and runs them through various buffers to get to the full signal output ready for amplification....
by Traxstar1825
Mon May 11, 2020 1:07 am
Forum: Main Outdoor Warning Sirens Board
Topic: Analog Siren Controllers
Replies: 6
Views: 3223

Analog Siren Controllers

Does anyone know how analog speaker siren controllers work? Like I assume digital ones just play a sound file, but what makes a siren controller analog? Also I saw a video of a Whelen analog siren with low battery’s and it’s pitch went all over the place. What causes this?
by Traxstar1825
Wed Aug 22, 2018 2:27 am
Forum: Main Outdoor Warning Sirens Board
Topic: EOWS 816 or 812?
Replies: 4
Views: 2569

Re: EOWS 816 or 812?

Wow that's strange but cool. What was even the purpose of making the 812?
by Traxstar1825
Tue Aug 21, 2018 8:15 pm
Forum: Main Outdoor Warning Sirens Board
Topic: EOWS 816 or 812?
Replies: 4
Views: 2569

EOWS 816 or 812?

I see lots of people calling the siren either the 816 or the 812 and I was wondering which one it is. I heard something about the bottom 2 speakers have 2 drivers and the rest have 1 and it's called the 812 and I've also heard all of them having 2 drivers and it's called the 816. Does anyone know ab...
by Traxstar1825
Sat Jul 21, 2018 8:13 am
Forum: Main Outdoor Warning Sirens Board
Topic: Denton State School Sirens
Replies: 1
Views: 1723

Denton State School Sirens

So this is mainly for my fellow DFW siren enthusiasts. Im sure you all are aware of the 3T22 at the Denton State School, and you might also be aware that there is a second inactive 3T22 also in the DSS. the active one appears to have an earlier GE motor on it? and im not sure about the inactive one ...
by Traxstar1825
Sat Jun 23, 2018 3:44 am
Forum: Mystery Sirens
Topic: ARCHIVED: Mystery Sirens (2008-3/2021)
Replies: 4223
Views: 1873588

Re: Post your Mystery Sirens here.

Chicagosiren-hunters wrote:
Fri Jun 22, 2018 11:24 pm
What you have there appears to be a Federal Model AX blast-proof siren.
Actually now that I look at the model ax, the front looks the same but the body of the siren looks different... Any other ideas?
by Traxstar1825
Sat Jun 23, 2018 3:39 am
Forum: Mystery Sirens
Topic: ARCHIVED: Mystery Sirens (2008-3/2021)
Replies: 4223
Views: 1873588

Re: Post your Mystery Sirens here.

Chicagosiren-hunters wrote:
Fri Jun 22, 2018 11:24 pm
What you have there appears to be a Federal Model AX blast-proof siren.
Thank you
by Traxstar1825
Fri Jun 22, 2018 9:39 pm
Forum: Mystery Sirens
Topic: ARCHIVED: Mystery Sirens (2008-3/2021)
Replies: 4223
Views: 1873588

Re: Post your Mystery Sirens here.

I saw this siren inside one of the huge guns on the USS alabama its definitely some kind of federal signal, and I've been searching for hours and hours and all I've seen is some eBay ad of one that looks like this but is all silver and the ad had no name for it just "Vintage Fire truck Federal ...

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