No, that is not a knock off Modulators are really that large. The older style modulator 2008 like that one is 63". It does not help that she is also standing behind the unit. The new B series Modulators are quite a bit smaller. The 2008B is only 43", 20" shorter.

I am stumped. https://www.google.com/maps/@40.5660419,-77.2328147,3a,15y,97.94h,95.52t/data=!3m6!1e1!3m4!1shCsb57tXJq7F1-FjgaqfjA!2e0!7i13312!8i6656 Federal signal STH-10 for sure. Also any idea about this? I live on a old camping ground so it might have something to do with that. That is an electr...

The Point Beach Nuclear Power Plant in NE WI. also had a system of the round horn Hurricane sirens in the late 70's thru the 80's. My family just happened to be driving by one in the summer of 1984 when it was going off for a test. I saw a poor guy walking below the siren covering his ears. We drov...

Some are saying elsewhere this was a faked photo from Tuscaloosa Alabama and that this came up elsewhere on the board. This is not a fake photo I have the original at my house. This photo was published in a W.S. Darley Magazine back in the 1980s. I believe the caption was "typical siren instal...

I found it definitely not an STL-10.

I apologize for the bump but I think this might be of some help: https://youtu.be/tEwlGcJ9xjQ https://youtu.be/dfcarTF6KwM (Both of these videos do not belong to me.) Yes, one of my many Alertronic videos. I now have a 3rd board (in my possession this time). I suppose I could share some of the info...

As the siren winds up the start capacitors discharge, in order to charge them back up for the next use, the siren charges them back up during the wind-down. There is a centrifugal switch on the motor so when the siren hits a certain RPM, it turns the motor into a generator to charge the start caps b...

You would not happen to have any photos of the controls, would you? If you could post them that may help.

If not the Sentry VR series are you maybe thinking about this siren?



https://www.youtube.com/watch?v=GCz3OiSefQM

Set commander up to send out an extra DTMF string in addition to the existing activation protocol and I'll throw a radio in with the sirens, that way you don't have to deal with the DCFC. I actually heard back from Knox Township today and heard they paid $3600 a siren to C&K Early Warning Syste...