The Siren Board

Discussion of Outdoor Warning Systems
It is currently Fri Sep 17, 2021 1:12 am

All times are UTC




Post new topic  Reply to topic  [ 13 posts ]  Go to page 1 2 »
Author Message
 Post subject: Alertronic Tonesets
PostPosted: Sun Jul 25, 2021 5:16 am 
Offline
Registered User
Registered User
User avatar

Joined: Tue Mar 10, 2020 5:36 am
Posts: 100
Real Name: Justin
YouTube Username: HX56
Discord: HX56#3539
Location: Western Sydney - Australia
Karma: -1
Hi all,

Does anyone know the peak frequencies of dual tone Alertronic controllers? Potentially also the start frequency.
Thanks.

_________________
Your Not So Local Australian Enthusiast! || Owner of r/AirRaidSirens on Reddit.

My Australia Siren Website - https://sites.google.com/view/australia-sirens/home


Top
   
 Post subject: Re: Alertronic Tonesets
PostPosted: Sun Jul 25, 2021 6:05 am 
Offline
Supporter
Supporter
User avatar

Joined: Thu Aug 11, 2011 12:51 am
Posts: 738
Real Name: Thomas Diener
YouTube Username: FSThunderboltfan1000
Location: sheboygan WI
Karma: 2
Could not tell you the start frequency but they peak at 654 and 763.5

_________________
Proud owner of rcm1, model 2,2T,Model A, Thunderbolt 1003, AF timer, FS SS1000, 500SHST
Wisconsin siren services
https://tinyurl.com/sdoam7m


Top
   
 Post subject: Re: Alertronic Tonesets
PostPosted: Sun Jul 25, 2021 6:23 am 
Offline
Registered User
Registered User
User avatar

Joined: Tue Mar 10, 2020 5:36 am
Posts: 100
Real Name: Justin
YouTube Username: HX56
Discord: HX56#3539
Location: Western Sydney - Australia
Karma: -1
Thank you very much. Helps a ton!

_________________
Your Not So Local Australian Enthusiast! || Owner of r/AirRaidSirens on Reddit.

My Australia Siren Website - https://sites.google.com/view/australia-sirens/home


Top
   
 Post subject: Re: Alertronic Tonesets
PostPosted: Sun Jul 25, 2021 9:54 am 
Offline
 
User avatar

Joined: Fri Jul 02, 2021 9:04 am
Posts: 19
Karma: 0
I calculated that Alertronics such as Odegen, IA are 740 HZ. Dual tones are 780/680 HZ. I would assume that the start frequency is half of the peak frequency, therefore:

Alertronics such as Odegen, IA:
Start: 370
Peak: 740

Dual tone Alertronics:
Start: 390/340
Peak: 780/680

_________________
A young enthusiast in the Grant County,WA area. Older Federals are VERY abundant here.

Soon-to-be proud owner of a Federal Model 5 and/or Model 2.


Top
   
 Post subject: Re: Alertronic Tonesets
PostPosted: Mon Jul 26, 2021 12:14 pm 
Offline
Registered User
Registered User
User avatar

Joined: Tue Mar 10, 2020 5:36 am
Posts: 100
Real Name: Justin
YouTube Username: HX56
Discord: HX56#3539
Location: Western Sydney - Australia
Karma: -1
Ah, that's interesting, two different frequency sets. I'll try both and see which sounds more accurate. I'm also guessing the deep throaty sound comes from the drivers not the tone?

_________________
Your Not So Local Australian Enthusiast! || Owner of r/AirRaidSirens on Reddit.

My Australia Siren Website - https://sites.google.com/view/australia-sirens/home


Top
   
 Post subject: Re: Alertronic Tonesets
PostPosted: Mon Jul 26, 2021 3:12 pm 
Offline
Administrator
Administrator

Joined: Sat Mar 10, 2007 8:00 pm
Posts: 1843
Karma: 22
HX56 wrote: *
Ah, that's interesting, two different frequency sets. I'll try both and see which sounds more accurate. I'm also guessing the deep throaty sound comes from the drivers not the tone?
All the drivers do is reproduce the sound fed to it through the amplifiers (themselves fed by the tone generator) into whatever chamber the sound will emit from (a reentrant horn, a speaker chamber in a stereo, etc.). Far more goes into how a tone (or music or whatever) sounds than just the frequency. Horn/speaker resonance is one thing (think why different speakers sound, well, different) but, more importantly for tone generation, so is the shape of the wave. Go look it up. Siren tone generators are really nothing more than primitive simple synthesizers so many of the principles translate.

The community on social media and on YouTube seems to think the drivers do everything when in fact their role is just one part of a complex device.


Top
   
 Post subject: Re: Alertronic Tonesets
PostPosted: Wed Jul 28, 2021 12:09 am 
Offline
Registered User
Registered User
User avatar

Joined: Tue Mar 10, 2020 5:36 am
Posts: 100
Real Name: Justin
YouTube Username: HX56
Discord: HX56#3539
Location: Western Sydney - Australia
Karma: -1
I see, I guess the online idea is what got me thinking that way. I've seen how much is inside the cabinets so I guess you're right, if it's not needed why would it be in there? I believe Alertronics use either a square or pulse wave.

_________________
Your Not So Local Australian Enthusiast! || Owner of r/AirRaidSirens on Reddit.

My Australia Siren Website - https://sites.google.com/view/australia-sirens/home


Top
   
 Post subject: Re: Alertronic Tonesets
PostPosted: Wed Jul 28, 2021 3:24 am 
Offline
 
User avatar

Joined: Fri Jul 02, 2021 9:04 am
Posts: 19
Karma: 0
They actually use a triangle wave with varying tones for all electronic sirens (Except Whelen, which uses square)

_________________
A young enthusiast in the Grant County,WA area. Older Federals are VERY abundant here.

Soon-to-be proud owner of a Federal Model 5 and/or Model 2.


Top
   
 Post subject: Re: Alertronic Tonesets
PostPosted: Thu Jul 29, 2021 11:53 pm 
Offline
Registered User
Registered User
User avatar

Joined: Tue Mar 10, 2020 5:36 am
Posts: 100
Real Name: Justin
YouTube Username: HX56
Discord: HX56#3539
Location: Western Sydney - Australia
Karma: -1
SuperBanshee836335 wrote: *
They actually use a triangle wave with varying tones for all electronic sirens (Except Whelen, which uses square)
For real? Wow. I always thought they would have used a pulse or square. Also surprised they use a triangle over sine, but oh well, it works. Guess you don't want to blow the drivers. Thanks for the help!

_________________
Your Not So Local Australian Enthusiast! || Owner of r/AirRaidSirens on Reddit.

My Australia Siren Website - https://sites.google.com/view/australia-sirens/home


Top
   
 Post subject: Re: Alertronic Tonesets
PostPosted: Fri Jul 30, 2021 2:31 am 
Offline
Administrator
Administrator

Joined: Sat Mar 10, 2007 8:00 pm
Posts: 1843
Karma: 22
SuperBanshee836335 wrote: *
They actually use a triangle wave with varying tones for all electronic sirens (Except Whelen, which uses square)
This is incorrect. It’s all square.


Top
   
Display posts from previous:  Sort by  
Post new topic  Reply to topic  [ 13 posts ]  Go to page 1 2 »

All times are UTC


Who is online

Users browsing this forum: No registered users and 40 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Jump to: 

Powered by phpBB® Forum Software © phpBB Limited