The Chrysler at the Cerro Negro Lookout Tower should actually be in La Ca?ada Flintridge instead of Glendale. I checked on Monday to see if the San Dimas Thunderbolt 2000 was still there as earlier this spring, Edison were replacing the power poles that ran through that alley. The siren is still the...

Just saw this on 9 news.

http://www.cbs2.com/video/?id=115629

http://smg.photobucket.com/albums/v499/ ... rthune.jpg

Looks like a Sentry 3V8.

kx250rider I notice something else interesting: The valve covers on the engine don't say "Chrysler Industrial" as the other siren engines I've seen do. I wonder if it was replaced, of if maybe the original engine was "borrowed" by the previous owner, then replaced with this engi...

Video:

http://www.youtube.com/watch?v=yGkWr4W35GY

Today I visited the American Military Museum located at 1918 Rosemead Blvd; just north of the 60 freeway by the Whittier Narrows Recreational Area. They are opened on Friday thru Sunday from 10 AM to 4:30 PM www.tankland.com http://img.photobucket.com/albums/v499/yuandrew/sirens/AMMEnt.jpg The museu...

My friend, Cory (know as CABLEvision here), seems to have taken a break from sirens and turned his interest to oil field equipment instead. After all, there is an oil field right by his home in Brea, CA While searching around on Youtube for some oil pump-jack videos, I happened to come across a voca...

The "Forrest Gump" Thunderbolt was on some sort of store/shop building about three or four stories tall next to a church and from what I can gather on the map, it's across the street from the Hilton. CABLEvision mentioned to me that he's visiting Georgia this week as well and would probabl...

I went to check out this T-bolt earlier today (well, it's been a little over 2 years since I posted the pictures) and the good news is that it is currently still standing. The bad news however is that there was a crew there today replacing the telephone/electrical pole you see to the right of the un...

Over the weekend (on Saturday afternoon), I stopped by the fire station in Brea at 555 N. Berry Street to check out the Thunderbolt 1000T located on the training tower only to be told that it has recently been disconnected. A month or two ago, the fire station underwent remodeling on the interior an...

Well after a quick look i can only see two chips that will directy make sound - IC2 and IC16 are both NE555's and these will make a square wave tone. The rest of the circuitry must be used to modify this tone in different ways - a pair of NE555's connected will make a wail. I was thinking the same ...