June 2020 Tornado Siren Test from the Scanner's POV

[@seanjuth]

The hazmat tone you hear is ASC's Fire tone. It's basically a more stretched out attack signal. After the test is done, the system is polled for each sirens status.

[@KJ7BZC]

Beautiful recordings of the signal, its called Compulert and was developed by American Signal Corporation. There is an encoder modelled CSC-960 that generates the FSK signals heard, decoded by a special receiver on the siren's end.

[@SirensAndAlarmsOfNorthernIL]

The decoder is called an ASC RTU. I bet the CSC-960 is what does Two-Tone as well as those encoders can do DTMF and Two-Tone besides FSK

[@SirensAndAlarmsOfNorthernIL]

Gotta love the sentry! I wonder why and when did Porter county decided to be like LaPorte and switch to FSK. I really miss their good old DTMF triple activations

[@DarthD3NN15]

and its probally hazmat. here in hawaii there's a hazmat tone (different from the mainland since we got a "unique" siren system.)

[@DarthD3NN15]

also (if you dont mind) i would like to see more monthly tests with the scanner

[@MegaUh]

It’s a hand-held ham radio

[@McPikeVHS]

@@MegaUh if you had it, you could try to tune to your NOAA frequency to say 162.XXX (X for digit)

[@NWIEA]

I've been trying to do this in PC as well, but they haven't done the test in 2 months

[@garyhisgun4996]

Alert Attack then Fire Signals the Fire Signal is a longer version of the Attack Signal usually a longer steady then off cycle

[@RailfanKamryn1172]

The ambiance sounds crazy man

[@jacobisworld9516]

That’s Sounds Like Donna From NOAA Weather Radio.

[@smg5productions630]

I think Donna found a new job

[@jacobisworld9516]

I Miss Her.

[@scottconner5401]

Who the heck is Donna

[@jacobisworld9516]

@@scottconner5401 she used to be on noaa Weather Radio she was a female who recorded computer voice.

[@ksgoalhorns57]

The Closest One I think Was A Sentry 10V2T Siren And The Faint one Farther Away Is A Federal Signal 2001

[@finny1548]

Yea

[@TheOFFICIALKingsIslanderALT]

EBS? I thought the EAS was replaced...

[@IIIIIa1exIIIII]

How did you find the channel for the encoder?

[@STLMetroSirensMain]

What does the DTMF activate?

[@RailfanBrenden.]

3:12 what kinda scanner do you use

[@mattmakesmachines]

Its a baofeng UV-5R

[@NorthlandAreaMedia]

the voice who was speaking was the Crs old gir voice

[@seamorethesealt]

What is the name of that tone?

[@Bobherry]

Isnt that a Baofeng UV5r

[@MrIdklolidk]

It is, i have 6 of them and they are cheap to get. Pretty useful when u are into HAM radio

[@Bobherry]

@@MrIdklolidk I work at walmart right now and a lot of us carry them because they are so much cheaper then the proper radio.

[@3v068]

Is there a way to decode these transmissions to see what these tones are communicating? Or is that something that is limited information? Im curious because if you can decode those tones and see what they're trying to transmit, Id love to see whats happening in my area. Just recently got into radio technology and ive been really interested in all this stuff

[@seanjuth]

The FSK protocol you hear is proprietary, so no you can't decode it.

[@414RadioTech]

@@seanjuth run again you can actually decode it by simply recording it and replaying it and it would actually activate those sirens it's easy to do it in Loop mode

[@seanjuth]

@@414RadioTech you clearly didn't read my message correctly

[@sirensofnorthdakota]

Nice sentry?

[@FireAlarmFreak]

Thats really cool! Few Questions, What scanner do you use and how do i know what frequency to go to the hear the tones?

[@SailorKirby]

The best way to get your frequencys in your county is radioreference, also its a Baofang but IDK the model number but it could possibly be a UV-5R (I have this model)

[@STLMetroSirensMain]

@@SailorKirby Normal UV-5R. Would suggest a bc75xlt because baofengs u can transmit just by pressing ptt, so i wouldn't reccommend a uv54

[@SailorKirby]

@@STLMetroSirensMain Oh, I didnt know, I got that UV-5R for my bday but thanks for letting me know about this, im still trying to confirm what channels has the FSK activation for my county. I will look into this

[@STLMetroSirensMain]

@@SailorKirby well, theres a setting in the menu to disable PTT, so if you do that, no worries on transmitting,

[@SailorKirby]

@@STLMetroSirensMain Ok, btw what does ptt stand for? And is that how you hear the FSK activation?

[@SBPepperminion]

How do you know the frequency?

[@TheTechPianoPlayerKid]

How do you find the frequencys where the tones are broadcasted to activate the sirens? I do have a scanner, and I can receive frequencies from 108-199 and 400-512. The scanner is a Uniden SR30C.

[@STLMetroSirensMain]

Radioreference

[@hilo2-est3-elev]

My city uses “Project 25 Phase 2”. What is the frequency of it?

[@THEFINALHAZARD]

@@hilo2-est3-elevif than the case, there’s no set frequency. 9,999 times of 10,000 a P25 Phase II system is on a trunking network which utilizes a table of frequencies that the radio controller picks from the first available frequency. Each “agency” and their stuff are on talkgroup IDs. Eg Fire Dispatch is talkgroup 1000. Well dispatcher keys up on TG1000, and the first available frequency is 852.6125 Well there’s a pause between that and the unit response. The trunking computer shifts everything radio and server side from that to 858.4100 as now PD with Talkgroup 76219 is on 852.6125 Usually on networks like that you don’t have much actual tones. Digital compression distortion is bad and has rendered QC1 tones completely unusable. QC2 works if you program a tone range due to compression pitch changes; but stuff like this specifically for siren activation tends to be encrypted. Scanner wise the BCD436HP is what I use for that and it’s as simple as creating a favorites list in the software of what you do/don’t wanna hear; or just entering a zip code to the scanner-assuming the nationwide database on it is up to date that is

[@cooldomino1800]

What would I look for when finding frequencies?

[@cooldomino1800]

@@CoolSirens1000T ok. Thanks.

[@DarthD3NN15]

very cool! does it work with regular noaa weather radios or do you need a special radio for that?

[@benmeyer2916]

NOAA radios are totally separate from this handheld, and this radio in the video (a baofeng uv-5r) is not all that special, just a basic analog transceiver with the dispatch frequency programmed in. It’s also illegal to transmit but not to listen

[@scottconner5401]

How did you find the Fequnces

[@86TruenoSprinter]

can you reply the link so i can buy a Siren Scanner plz

[@SailorKirby]

Well the model is a Baofeng (Possibly a UV-5R)

[@RayRayfrfr]

What antenna are you using

[@IbukiMiodaa24]

0:35 Donna from NWR??

[@ElevatorWasher5000]

Sounds like it

[@spcraleigheas]

Why haven’t u been postin?

[@AYDEN_OFROBLOX]

um to my knowledge the siren should have motor cooldown

[@ElevatorWasher5000]

?

[@AYDEN_OFROBLOX]

siren cool down @@ElevatorWasher5000

[@AYDEN_OFROBLOX]

don't burn out the motor @@ElevatorWasher5000

[@brandongeorge3737]

I love that walkie-talkie

[@Kadencabs]

same i own it

[@SirensAndAlarmsOfNorthernIL]

That is called a scanner. It can be used as a walkie-talkie but usually it is a scanner

[@OhioOutdoorWarningSirens]

@@SirensAndAlarmsOfNorthernIL the more proper term is two way radio

[@chipweather]

@@SirensAndAlarmsOfNorthernIL its a transceiver not a scanner

[@SirensAndAlarmsOfNorthernIL]

@@chipweather Ik now lol that was from a year ago

[@brandongotzpowers]

Will this work the fire department sirens??

[@SailorKirby]

Depends if your county has a station that broadcasts the scan codes or uses them

[@GuywholikestheKFD]

what scanner is this?

[@GamingKing545]

its a uv-5r honestly just get a rtl-sdr and a good antenna

[@414RadioTech]

Those DTMF tones that you heard that sounded like a phone dialing at the end it was the pound of symbol that went through six times and then it dialed 12 so that basically knows that I know how to decode that shit so anybody could set that shit off and it's using that compulert system which is why you were hearing those squeals and whatnot prior to the DTMF on the VHF repeater system

[@mattmakesmachines]

The DTMF sent was a very common code for older units It was 3333348

[@RailfanKamryn1172]

Donna?

[@northernindianaoutdoorwarn9698]

Is Laporte 151.340?

[@OhioOutdoorWarningSirens]

The lady said Porter County

[@CentralOHSirens]

@@OhioOutdoorWarningSirens Of course you would be watching this video

[@OhioOutdoorWarningSirens]

@@CentralOHSirens you watched it too lmao 🗿🗿

[@CentralOHSirens]

@@OhioOutdoorWarningSirens yeah but the difference here is i didn’t hack a sys- nvm

[@minnesotaoutdoorwarningsirens]

@@CentralOHSirenswait….what? he hacked a system????

[@aperson1181]

What radio is this ?

[@SailorKirby]

Some type of Baofeng Radio, possibly a UV-5R

[@user-yr7bb7vr5t]

151.340