BROADMOOR ESCAPE SIRENS working perfectly!! {{Beware: LOUD VIDEO!}}
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- เผยแพร่เมื่อ 17 ก.ย. 2024
- Here we have two sirens recorded on different days. Both activate at 10am on a Monday. I've added a 30 second off-set (see each siren's actual time on the bottom left/bottom right).
It's much better to illustrate in the video like this, else they would both be starting up at the same time. Recording them with a 30 second off-set allows you to see each stage, one siren at a time.
Both sirens in this video are working perfectly. Most of the other ones either don't work at all (during my visits) or have a fault with one of the shutters - either one is jammed open or shut.
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• SIRENS - Finding the 1...
(this video is SIREN H and SIREN I)
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ABOUT THE SIRENS:
Here are two sirens from a system containing 13. They are located in the neighbouring towns surrounding a secure hospital in the UK.
Me and Chay went out to find them all - this is now complete. See all my other videos here:
• SIRENS - Finding the 1... )
It was a very interesting bank holiday Monday lol! Chay was a bit apprehensive while waiting for the first siren to sound, but loved it afterwards :)
He liked it enough to stay with me whilst tracked them all down.
It was a good day as we did other things like play football in the parks, McDonalds and see the sirens of course!
It was a mixed bag - some viewable from the street, some hidden so much that you'd never know they were there (unless it went off!), some in council depots, compounds, parks and believe it or not - in the middle of housing estates metres from houses! (would scare the living daylights out of residents if they went off at 3am!)
Some are in secure places with no access at all.
The sirens are tested at 10am each Monday.
I have recorded most of them in action (lots of Monday's@10am!) - in this video there are two of them.
BY THE WAY - In reality all 13 sirens are tested together, but so that you can see each stage (start-up, running, running-down) of each siren, I have offset the sirens by about 30 seconds (see the times in the bottom left and right in the video).
HOW THEY WORK:
The Klaxon CS8 siren.
A 415volt 3 phase motor spins two rotors on either side. One rotor is for the high tone and the other for the low tone (the one with most holes is the HIGH tone).
During the escape siren, the airflow is cut alternately to each rotor by a shutter on each end producing the distinctive high-low tones. I believe these are known as CODED SHUTTERS - hence the model name Klaxon "CS"8.
Both shutters are opened together for the all clear tone. You can just make out the high and low frequencies being produced together if you listen.
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Oh how I miss these going off on a Monday morning. Part of my childhood until I was 14. First lived behind Broadmoor then on to Yateley. I remember dad rushing to work whenever they went off at any other time
Since they go off everyday, how would you know if an actual patient escaped? Do the sirens go off for longer if they had?
@@gsmooth4279 they only went off on Monday morning for a test. As far as I remember if someone escaped the siren would have sounded until they were caught, and then there was a different tone sounded when they were found
@emmathompson7791 Wow does that mean it could go off all night if the patient isn't found?
Awesome siren sounds, great video. Great to have your son with you and enjoying this unique electrical equipment.
Yep... great memories! He's 19 now, he was about 10 back then.
Wow awesome!!!
@@mrmattandmrchay 《》《》《》《》《》《》
Thank you for sharing these videos. These were a huge part of my childhood.
looks pritty fun finding all the sirens :)
Use to live in Lightwater and you'd set your watch on Monday at 10am as the sirens kicked in - Remember our school going into lock down when the sirens went off at anytime other than 10am on Mondays 😊
Danger 415 Volts dam them siren are strong singers
And thunderbolts they are also 415Volts
Awesome siren videos. I like all these little hidden gadgets and gizmos that are squirrelled out of the way.
The second siren running up is my favorite
Surprising they work at all I bet age and the lack of maintenance/ not having the parts to maintain them has taken its toll
Just think, many of the patients have this sound going on in their heads when the sirens aren't being activated.
VEry Good! I really like the time with them so you can see them start up. Broadmoor must've been a real menace at times.
+Lewie McNeely the hspital goes on lock down on the siren test day
@Lewie McNeely it still is so they toughend the security so they dont need the sirens they have 1 now witch is siren G
I've watched some footage of the place and I don't want to go there.
Anna Powell Bet a lot of shock therapy goes on or ought to.
Lewie McNeely probly so & aparently the security is tough &they think they need 1 siren
Music to my ears!
+1b2b Glad you like it. ... me too!
@@mrmattandmrchay alert is the all clear signal did you no that
What
What
Uuuuuuu
6:30 That is so satisfying
If u want a better view of the sandhurst School just go to the basket ball court next to where you were and there is a hole in the fence, crawl through and there you go get as close as you want, the chavs in our local area have cut a hole in the fence so you can actually climb to the alarm...
They should have done this... Go to America find however many Thunderbolts they need, restore them, take those sirens back to Britain, and replace the old Broadmoor sirens with the T-bolts
I like the old British sirens.
But they're gone now
And move the broadmoor sirens to us
Sound real loud like a war alerts isn't! That's very interesting video, my dad been in German the end war. But is not being with him family anymore. Now we're good friend with respect of better than family of government war... Is a long story anyway! My dad knows about it. Now I live in Woodford (North East London). but my other family in local country the UK. Anyway, excellent video. ^_^
ALANSWEETIES99 These are not Air-raid sirens, they are escape sirens for broadmoor high-security hospital.
These sirens were never used in the war actually. They were brand new in 1952. The difference between these sirens and WWII sirens is the dampers on the ends that produce the Hi-Lo sound.
Because of the cold war, there was always the possibility that Air Raid Sirens could need use in the future. Broadmoor couldn't have sirens that made the same sound as air raid sirens, becuase that would cause mass confusion - people wouldn't know if the sirens were for a broadmoor escape or an air raid. They had to use dampers in order to ensure that their sirens made a different noise/tone to an air raid siren.
Alan Deutscher
@@SouthGeorgiaSirens talktalk WiFi
to be honest, i'm quite surprised that the CS8s served for 6 decades! sad we don't have many CS8s left in the country, that being; carstairs, Plymouth and supposedly Newport. personally, theses are my favorite siren. good video, every now and then i tend to watch your broadmoor and carstairs videos to keep my mind of things!
👍
What a sound, awesome! Imagine one of those on a fire engine, you certainly wouldn't miss it heading towards you that's for sure! I lived near rainhill hospital near Liverpool and they tested theirs on a Sunday but they didn't sound anywhere as good as that one
Pretty sure you would deafen everyone on the streets if the fire engine somehow had enough power to run the 415v siren
They should keep these and turn them into air raid sirens if world war 3 starts or turn them into storm sirens or something.
Nah they're not gonna last much longer, spareparts for them are possibly very hard to find.
how do u get all these captures of the big beastly sirens going off & how loud are they
Amelia Violet they are quite loud, I live in between the London road and Bracknell station one (about a mile from each) and I can hear both of them.
They could make up to 140 or 130 Decibels every test.
The sirens are 118db @ 100ft
@@southernsirens1659 the output is 118db @ 100ft, klaxon told me themselves. what kw motor do XT22's use?
@@southernsirens1659 also they are CS8's not 3T22's on their side smh
Do these escape sirens go off to warn people of fire and/or severe weather?
Hi, good question, but no. Their only purpose is (or 'was' because they were removed about 3 years ago now) for the purpose of warning local residents of an escape. We don't really have servere weather in the UK (or it's not that common) so we have no weather warning system here.
The start sounds like an F1 car. Good video.
+Neddyfram ™ Thanks :)
Now first off imagine seeing more of these with horns. I’ll be here in America. We had the 3T22 originally used during the Cold War and World War II, but nowadays is served as an active tornado siren found in big town, small town and local communities
Sounds like the shutters on siren b aren't timed right. The hi shutter is not open as long as the lo shutter is.
+broken solar panel I'm not 100% what is doing the timing here. On a different video I had one camera on a tripod filming the camera whilst I was with the other camera at the bottom of the siren tower at the control boxes. I was expecting to hear a relay or contactor switching on and off operating each shutter probably wired to a flasher circuit. Once the main contactor fired the control box was silent.
I think it runs on a 555 astable timer, where one signal is shorter than the other
Due to the laws of physics, the lower pitch sound travels better over distance than the high-pitch tone. The high-tone shutter is deliberately left open for longer then the low-tone shutter to compensate for this.
@broken solar panel crap, she got away! Sound the escape signal, now!
broken solar panel hi!
In these old UK Civil Defense Information Bulletins, they were talking about Gray Warnings (fallout arriving in an hour) and I think they used CS 8s like this one to make a pulse tone.
+Benjamin Fuller Not heard of the pulsed tone before but I suppose it's possible by closing both shutters at the same time then opening again repeatedly.
The whole point of Broadmoor using the CS8 was make sure that their sirens sounded different from Air Raid sirens.
Civil Defense used multiple different ways to warn for fallout including bangs, whistles and dongs, according to the Protect and survive films made in 1978. I don't recall seeing anything alluding to Klaxon CS8's.
That's because they dropped the Gray Warning between the Civil Defense Information Bulletins and Protect & Survive. A pulsed tone was meant to warn of fallout arriving in about an hour as a Gray Warning while Black Warnings, fallout imminent, was given by gongs, whistles and maroon rockets.
Broadmoor actually used to use the pulsed tone from the first time they tested to sometime in the 1960s before switching to Hi-Lo
Say don't cut cs8 will be electric volts
Now I know about this sirens...this is a psychic hospital like a jail (sorry I am german) and YOU ARE standing at wikipedia about this sirens good!!! ;)
6:30 THAT SOUNDS AWESOME WITHOUT THE SOLENOID SHUTTING THE DAMPER!
Edit: oh wait I already said that 🤦♂️
my new video shows one shutter stuck open, the other is stuck closed - sounds really weird - I'm uploading it in a day or so (carstairs junction siren)
mrmattandmrchay ok cool!
Why are these sirens used were they like air raid sirens or something.. they sound really nice
Ainsley Harriot They warn of an escaped patient from Broadmoor High Security Psychiatric Hospital. They are tested every Monday at 10am. Unfortunately, the sirens will be decommissioned later this year.
Do these still exist, what happens if they do go off (not a test) what do people have to do?
Thx for doing my fav siren
any idea when the are decommissioning them all? I know a few of them are still working at the moment. Have any been removed already that you are aware of?
They are. Cool
in all clear mode Siren A sounds a bit like a Thunderbolt 1000T on chopper setting 4
The siren A is almost too loud for the camera
what siren out of A & B & the reast will be removed first ? if its siren B im gonna go for it although it may piss dogs off but it find the siren B the wiled one i used to own a siren befor but it was a fagatized midget & it was a us hornet i later got rid of it
+Amelia Violet Hi Amelia, the sirens will be around for a while longer yet. It was decided not to remove any sirens until the new hospital is complete (years away)
usa needs these
Why are they running down with the dampers closed? Won't that ruin the motor?
it reduces the noise of the rundown. Carstairs does that with the CS8s in their network.
Fascinating stuff! thanks for posting!
very interesting stuff good video. I have some more lifts for you to go up soon.
URBAN harvey exploration Cool thanks and look forward to seeing them :)
If one of these 50hrz AC sirens was on 60hrz here in the USA would actually run faster
When you were filming, siren B I heard another one going off in the background
Nice one my love siren
Dude has a CS8 in his backyard XD bet that smashes windows
they look like Gents sirens with solenoids added
They were made in 1952 by Klaxon, and they are CS8 models.
EVERY MONDAY?
What kind of secure hospital is it?
Biological weapon research? lol
Edit: Oh... high security psychiatric.
What are they expecting the patients to be capable of?
Edit2: I read the notable patient list.
Damn.
Yep, tested every Monday since they were installed in the 1960s. The technology back then was cutting edge, but suppose they have to regularly test them to ensure everything will work if there was a real incident. I suppose now, they could be adapted to work over the GSM network of course, but back then it was a copper cable from siren to hospital control room :)
The siren a and siren b is cool
That is one huge tennis ball =o
Are broadmoor sirens only in your area?
There are only 13 satellite sirens and they are about 20 miles away from where I live, so not too difficult to visit them. Luckily I had a long term project in the area of the sirens a few years ago, so was not difficult to visit the ones I filmed on a Monday at 10am.
It is absolutely criminal that they have decomissioned these. I honestly don't believe (having seen the siren K autopsy video) that these cost much to maintain. A simple electromagnet, a motor and some switch gear. Understandably the motors might burnout over time, but I bet most are original. Now it will be social media or text message to tell you someone is on the run! I think they might live to regret removing these.
What are these sirens intended to warn against?
They warn the public that a patient from Broadmoor has escaped. Broadmoor is a mental hospital with the most dangerous people in Britain
Bon Ron
Well, then if I lived there and heard these sirens go off at any time other than 10:00 am on a Monday, I would make sure all my doors and windows were locked. There are some in San Francisco, California USA that are leftover air-raid sirens from WWII. They are now also tested every Monday at 10:00 am and would sound in the case of a tsunami, earthquake, or any other reason that an emergency alert would be sounded on the local radio system (ie. a kidnapped kid).
Hate to be the people who live right next to siren A in this video.
its actully siren L/I not A siren A is in Bracknell near the train station
Anna Powell Ok thanks for letting me know I don't live in the UK, I live in the US so I wouldn't know.
Insane wind down!
I love siren i
My teacher who was new to our school got his class on lock down because he thought that it was an escapey
What is the address of a siren
Hi, the address of "a" siren? Which one did you want to see?
siren a was removed 😪
Sounds like a slow hi lo thunderbolt 1003
i know right when it winds up it will sound like it
I have a little man of my own now named EVEREADY.
Is this in England?
Yep
Yehe boiii
Yes you all need me klaxon CS8
Awesome! Why does the tower for the sand hurst one look different to every other one.
***** Are they definitely "taking it down"?. I've been in contact with a Security manager at Broadmoor and apparently they are now retaining all existing sirens until such time as the new facility is ready in 2019, where there will be only one - on the facility itself.Not sure about all the current maintenance issues.Bon Ron, please let me know if there is evidence of an upgrade or take out in progress?
Imagine your doing work and it’s 12:45 and you hear that....
So is this the exact way they're supposed to sound?
What did that fence sign say at 4:08
+SixR it saild DANGER 450 VOLTS
@@kennedibodally8486 415V
What music is it at the start of the video?
What the blinking flip was happening with those weird jittery borders?
Looks like he is using stabilization in post, it's software making the footage steadier at the cost of the edges 'jittering'
Do you know if these are capable of wailing? I know they are never use it but is it theoretically possible
I think by the term wailing, are you referring to the "ramping up and down" of the rotor speed? I think this is what you mean, adjusting the motor speed to create this effect. As they are now, no. The motor in the middle is switched on, it goes up to full speed and the two tones are created by the shutters over the air-intakes on each rotor. One rotor does high, the other does low. But it would be theorestically possible, but you'd need some kind of motor speed controller to do it (VFD variable frequency drive).
mrmattandmrchay mrmattandmrchay You wouldn't need a VFD... without the shutters closing on the wind down (motor shut off) the rotors still have a lot of momentum and would keep rolling for about a minute or two. But with the shutters there is no air resistance or barely any so the momentum lasts about 5 mins. The red alert signal (wailing) is possible on these sirens but you'd need to either manually switch the motor on and off or get another controller as the one that comes with it is not compatible.
Broadmoor couldn't have used a wailing tone becuase if the cold war had turned into WW3 then the wailing tone would've been needed for air raids.
Does the high tone shutter has more rotor spaces then the low tone
yes, 10 holes for low. 12 for high
That's cool that you have a son I did not know that
+AwesomeDesertTortoises yep... known him for nearly 12 years haha! By the way I remember you from ages ago and you have one of the strangest profile names (but I'm not saying that in a bad way :) its just interestingly strange if you know what I mean)
mrmattandmrchay yeah
could you climb up the siren tower????!!!!
Roman TBoman If you are asking "if it's possible" then some, yes, indeed you can although you'd have to get into the siren enclosure first. One at the Traffic Depot one in Bagshot doesn't have an official 'enclosure'. Most of the tower hatches are open at the top of the ladder as well.However, due to the nature of these sirens (being connected to Broadmoor) I'm sure that the police would be very interested to arrest anyone that did climb the tower for "tampering with a secure hospital security siren!". It would probably be treated seriously. Members of the public would probably report it as well if they saw anyone up there.If you are asking "me" to climb the tower, then I won't be doing that as I'd lost my job if I picked up a criminal record for doing so :) I do some dodgy stuff, but I wouldn't climb up to one of these in clear view of everyone.
Siren a has a fast startup
The Sandhurst sirens has more faster runup...
They sound like train horns.
in 2018 siren H got removed
Wow
Sideways 3T22
i can see the shutter
My hair
Chay Ward Looks cool - makes you look older :)
What is the point in these sirens? Just asking
***** These are all in towns surrounding Broadmoor hospital (google it) - this place is not a prison, but it contains the most dangerous people in the country that, due to their condition, cannot be put into a prison. It's essentially a high security hospital with some dangerous people inside. During the 1960s someone escaped and killed some people in the nearby town. The public were really concerned, so these sirens were installed to warn people if someone escapes. The most recent escape was in 2001 I think. Security is very tight now with massive improvements (inner and outer boundary fences, etc) so really the sirens are not really needed anymore. There is a new hospital being built which is due to open in 2019, so these sirens will be decommissioned. Nevertheless, currently they are tested 10am on Mondays.
Thanks I knew it was a high security hospital, I was just wondering why some sirens were so far away.
+mrmattandmrchay if they dont need them then why do they test them ? i love the siren B & if there selling the Beast im gonna be the 1st out my area to get it & i donnno wat id do wit hit it probly have it on my house roof & use it as a weather warning sien
+mrmattandmrchay youtuber Oliviah Mcollng lives near there she lives near siren B reson is coz we both no each outher after meeting unexspectedly in london
TheA_Mboom They used to be Escape sirens.
😮
And h
Sch8
sounds like the american thunderbolt1003 on hi lo -->th-cam.com/video/ne4IMxs-hMk/w-d-xo.html
but a higher tone
Siren b is better
+Amelia Violet I have to be prepared with tripods and a plan of what I'm going to film.
Normally involves my main camera zoomed into the siren and recording on a second camera to give additional views - makes the edited version more interesting to watch.
They are "fairly" loud, I don't mean that you have to cover your ears though.
Thanks for your comment :)
Matt
+mrmattandmrchay may i ask how loud are they from a few yards away
+mrmattandmrchay the sirens nof broadmoor arfe mecanical
The Klaxon CS8 Produces 145db @ 1 metre, or 124db @ 30 metre (100ft)