Yeah they usually measure the siren's output with the siren on the ground in a anabolic chamber to create "perfect" conditions, so they can get the maximum output reading. Most sirens are nowhere near that rating in real world settings; for instance, a lot of later Allertors measured around 116-118dB @ 100' on axis when installed, whereas ACA claimed they were able to get 125dB out of it on axis in the chamber.
Growing up, I knew of two Allertors in Minneapolis. The other was also roof mounted, but it has been replaced by a pole mounted 2001. I must say I find Allertors more interesting than 2001s, I wish there were more. I think the fiberglass protective shell, was a great idea.
@twotailedavenger Yes it's on the roof of the school. I couldn't view it on google maps, the trees are in the way. Humboldt Ave N. would be the best place to view it from, between Shingle creek and 51st Ave. N.
Oh wow, seriously? Bill told me that the most he ever measured from an Allertor @ 100 feet was 116.-something dB. But then again that was a 9/12 one, might've had something to do with it.
Which isn't exactly true as the most anyone ever got out of one of these things at 100 feet is 116dB. Just another case of a siren manufacturer rating a siren for more than it really puts out.
Ah, that might have something to do with it! Didn't think about the horns having an effect on it, but now that you mention it, I bet that's likely what it is. I'll have to ask him more about that when I come up there next week. Thanks for pointing that out!
Here in southern ontario, they were grey in colour, same as our clm's. We didn't have that many allertor's in the city I lived in, more CLM's then they like dissapeared overnight in 1996..6 years after the cold war. Some of the bigger cities like Toronto and Hamilton may still have them? Thought about buying one for shits and giggles, but most of us don't have 3 phase 600 volts lol..to power them
Nah. Allertors usually sound all alike, so there wouldn't be much variation. With Thunderbolts, there's several different chopper levels and the option for solenoids, so there's much more variety in the sounds the Thunderbolts produce.
does the minneapolis area still have any model x's, banshees, and SD-10s? there are some photos of them on the siren archive. you also have penetrators, westy1962 filmed 2 of them
Try to photograph from the sunny side - if that is possible. EDIT out the 3 minutes of wasted time. I know start times may be off. Try to get out of the wind. Thanks for your recording. Perfect fifth musical interval creates a raspy resultant pitch one octave below the lower note.
the 10/12 Allertor was know as a legend but the Allertor seen in the video has been removed and sold to a scrapper when I understand that I was very mad!!!
No kidding, my T-1000 would blow this thing away. Allertors used to scare the crap out of me, but they aren't as scary as when I was a kid. The sure sound cool though!
@twotailedavenger Yes it's on the roof of the school. I couldn't view it on google maps, the trees are in the way. Humboldt Ave N. would be the best place to view it from, between Shingle creek and 51st Ave. N.
DAMN you guys have all the rare versions of sirens! This one has the rare 8/12 port ratio, which is why it somewhat sounds like a P-50. Nice catch!
murrfarms Sadley, this one is now gone, it was replaced in late 2014
1:01 4/5 thunderbolt
WeatherRadiosAndSirens01 you mean Thunderbolt?
Grace Sukhu yes
Ya! I've always liked the way this one sounded.
I think I can hear the Thunderbolt in my last video, every now and then!
Thanks for the complement.
Yeah they usually measure the siren's output with the siren on the ground in a anabolic chamber to create "perfect" conditions, so they can get the maximum output reading. Most sirens are nowhere near that rating in real world settings; for instance, a lot of later Allertors measured around 116-118dB @ 100' on axis when installed, whereas ACA claimed they were able to get 125dB out of it on axis in the chamber.
That would be a 8/12 Port Allertor. Siren starts at 3:05.
The T-bolt in the background is the same I recorded earlier that day. The T-bolt seemed more powerful than the Allertor.
Growing up, I knew of two Allertors in Minneapolis. The other was also roof mounted, but it has been replaced by a pole mounted 2001.
I must say I find Allertors more interesting than 2001s, I wish there were more. I think the fiberglass protective shell, was a great idea.
Any idea if that was also a 8/12 Port Allertor
As of May 2014, this siren has been removed, NOTE: I’m not sure of anything replaced this, so don’t ask me right now
It seems like the most common sounding allertor is a 9/12 port.
siren starts at 3:05
@twotailedavenger Yes it's on the roof of the school. I couldn't view it on google maps, the trees are in the way. Humboldt Ave N. would be the best place to view it from, between Shingle creek and 51st Ave. N.
Oh wow, seriously? Bill told me that the most he ever measured from an Allertor @ 100 feet was 116.-something dB. But then again that was a 9/12 one, might've had something to do with it.
Omg is this an 8/12 port ?!?
Dire Wolfy yes
Which isn't exactly true as the most anyone ever got out of one of these things at 100 feet is 116dB. Just another case of a siren manufacturer rating a siren for more than it really puts out.
Ah, that might have something to do with it! Didn't think about the horns having an effect on it, but now that you mention it, I bet that's likely what it is. I'll have to ask him more about that when I come up there next week. Thanks for pointing that out!
It means it measures at 125 decibles at 100 feet
@RFKFANTS67 Those are Mobil Directos, not Allertors. Much older and rarer.
Screw these 9/12 port sirens. I Love the 8/12 which it is not that buzzy!
sir Ralph and gian sir Quinto end ternida this one is gone:(
We mean the one you can hear from time to time.
Mainly during the attack signal.
Yeah, it's a 8/12 port, so it sounds different than the 9/12 and 10/12 ports.
Huh, I haven't seen one oscillate before...
RubyBoognish it’s not a fan
WeatherRadiosAndSirens01 um some sirens oscillate dude
Was a tornado coming? Awfully windy and weird dark sky!
Here in southern ontario, they were grey in colour, same as our clm's. We didn't have that many allertor's in the city I lived in, more CLM's then they like dissapeared overnight in 1996..6 years after the cold war. Some of the bigger cities like Toronto and Hamilton may still have them? Thought about buying one for shits and giggles, but most of us don't have 3 phase 600 volts lol..to power them
Oops! I'll correct that soon. What about the 125 part?
Wow, great video! That sounds so much like a P-50!
BTW, why did you say Alerter? It's really Allertor.
Nah. Allertors usually sound all alike, so there wouldn't be much variation. With Thunderbolts, there's several different chopper levels and the option for solenoids, so there's much more variety in the sounds the Thunderbolts produce.
does the minneapolis area still have any model x's, banshees, and SD-10s? there are some photos of them on the siren archive. you also have penetrators, westy1962 filmed 2 of them
these ones have a distinct growl when they start
@RFKFANTS67 I'd say that it's worth about a few hundred dollars. Even if you can't power it, you can run it up with a drill and just show it off.
3T22, and or 2T22, 2001's, and Thunderbeams.
kind of sounds like a P-50.
Try to photograph from the sunny side - if that is possible.
EDIT out the 3 minutes of wasted time.
I know start times may be off.
Try to get out of the wind.
Thanks for your recording.
Perfect fifth musical interval creates a raspy resultant pitch one octave below the lower note.
I live in north Minneapolis!
Would siren manufacturers measure the dB when the siren is on the ground?
@Thewoog34 How much coin is an old siren like this worth? Then you have the problem of powering it.
Some interesting UA-cam history here.
What color is this allertor? It's hard to tell in the dark.
the 8/12 ratio is very rare
the 10/12 Allertor was know as a legend but the Allertor seen in the video has been removed and sold to a scrapper when I understand that I was very mad!!!
Is that also an 8/12 port Allertor?
@Droideka133 Noticed i said usually. It could be a custom color choice.
In California they have a aca allorter
does it matter what color they are? most are yellow and others are grey..or around here they are
@hawkplaya94 Yellow= nuke and Tornado, Red= Fire Siren, Blue usually= Flood.
@twotailedavenger Try Bing Maps in 3D It's not quit the picture I tried it myself but it might work for you!
It is yellow, like most of the others.
@hawkplaya94 Grey, Blue whatever. The gray looks blue to me.
@hawkplaya94 Noticed I said usually. It could be a custom color.
@Droideka133 gray??
8/12
@Droideka133 well i live in west texas so no floods...what else can gray be used for?
very nice, 8/12 sounds awesome.
T-bolt? I see no t-bolt.
No kidding, my T-1000 would blow this thing away. Allertors used to scare the crap out of me, but they aren't as scary as when I was a kid. The sure sound cool though!
Is this siren on the roof of the school? I'm trying to find it on Google Earth.
@twotailedavenger Yes it's on the roof of the school. I couldn't view it on google maps, the trees are in the way. Humboldt Ave N. would be the best place to view it from, between Shingle creek and 51st Ave. N.
Starts around 3:00
It's not very loud really