What is this sound?

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CSL126

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I used to hear regular voice dispatch on this frequency. Now I just hear this sound (listen to attachment). Can anyone tell me what this is?
 

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RayAir

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Does not sound like encryption, just digital voice. maybe it is Pro Voice or AEGIS
 

CSL126

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Those aren't monitorable with a digital scanner correct? I have a pro 96, I guess I can just give it a try. I recorded that file on an analog scanner.
 

fredmertz51

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I have the same thing in Bettendorf, Ia Police. No record anywhere of Bettendorf having digital. Edacs system.
 

altec

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34° 36' 51.8" N, 92° 29' 54.3" W
Strange noise

That same noise comes up on a vhf freq here in central ar and i have never heard any voice traffic yet.
When the noise starts its motorboating a PL 67.0 appears. I'm not sure if its encryption or a system thats not monitorable. May even be some sort of a data being transmitted.
 
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