CHP Siren Tones

d119

Member
Is there any "readily available" Whelen product that has the CHP siren tones available on it?

If not, can anything be special ordered with them?
 

Clint129

New Member
To my knowledge you can’t get them special ordered or anything of that sort. However, the Whelen Gamma 2 has the CHP Yelp I believe
 
OP
OP
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d119

Member
More interested in the wail than anything. So Whelen is holding onto these tones and not allowing anyone else to have access to them?
 

gandalftheman241

Registered Member
I believe so. If I do remember correctly, CHP contracted with Whelen to make their own special tones. So you’ll only hear these specific tones on CHP vehicles and not any other department or Whelen product. The Gamma 2 Yelp has a different pitch to the one used in CHP vehicles. But they sound incredibly similar.
 
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d119

Member
Spoke with the Whelen rep and went as far as asking him to please check with Whelen engineering on this, but they insist that the CHP siren tones are nothing special, and that they are just standard Title 13 tones that are a standard part of their product offerings with Title 13.

Discuss.
 

hipeople159

Registered Member
What about this?
CA T13 Siren Tone Requirements
I think the reason CHP has their own siren tones might be because... I don't know, other sirens they've tried doesn't meet the requirements...?
 
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gandalftheman241

Registered Member
What about this?
CA T13 Siren Tone Requirements
I think the reason CHP has their own siren tones might be because... I don't know, other sirens they've tried doesn't meet the requirements...?
I don’t think they chose their sirens cause of other sirens not meeting requirements. It’s probably to meet the law while having a distinct unique sound people can recognize easily. Because there are a lot of sirens that meet Title 13 requirements. CHP used to use Federal Signals before they switched over to Whelen so I don’t believe they chose Whelen just because other sirens didn’t meet the requirements.
 
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d119

Member
Well I cannot get a straight answer out of the Whelen dealer. I asked them specifically to talk with Whelen engineering and everyone claims that the standard Whelen wail/yelp tones are what the CHP uses. But I don't think it takes a genius to tell that the peak of a CHP wail cycle is considerably lower than the peak of a Whelen standard wail cycle. The yelp also cycles more slowly and without such a high peak.

Oh well. I'm getting too old to chase this stuff down like I used to when I was younger. Too many projects.
 

hipeople159

Registered Member
Well I cannot get a straight answer out of the Whelen dealer. I asked them specifically to talk with Whelen engineering and everyone claims that the standard Whelen wail/yelp tones are what the CHP uses. But I don't think it takes a genius to tell that the peak of a CHP wail cycle is considerably lower than the peak of a Whelen standard wail cycle. The yelp also cycles more slowly and without such a high peak.

Oh well. I'm getting too old to chase this stuff down like I used to when I was younger. Too many projects.
What do you mean, "standard tones"? Do you mean the 295 tones?
 
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d119

Member
OK. So what this boils down to is that there is a CHP-specific "black box" that handles the siren. Hence the reason it's not available on any "off the shelf" Whelen products.

I'm researching another potential avenue.
 

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