A Coalition of Chicago Based Media Organizations Joins Together in Regards to CPD's Encryption

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JethrowJohnson

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They're using older consoles most likely, and that sound is the console override tone. It's not exclusive to analog.
Okay, I just thought it was strange because I can tell the difference between what the field units sound like now versus what they used to sound like - they don't have the MDC tones anymore and they sound a lot clearer and it sounds similar to the Wood County_West Virginia Sheriff's Office that switched to P25 conventional last year. But the consoles sound exactly the same. Maybe it's the quality of microphone that makes the difference.
 

Lllsssrrr000

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Hi all.
Haven’t read all the thread so might have missed something but has there been any major updates since CPD went fully encrypted on the zones?
Also, have you heard the NASCAR event will be on event one per 120 on zone 4

It’s a shame they won’t provide a 30 minute delayed feed of the event channels…
 

werinshades

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The question I have is why was the officer responding to a trespassing/disturbance 10-99 (1 person unit response).

Many officers I've seen either don't have a remote microphone attached to their lapels, or have it issued for the day but take it off. Many are wearing their radios on the bulletproof vest pocket which is about mid-chest high. I see this more with tact teams but many beat officers wear it the same. They're yelling on the radios, in order to key it up they have to reach across the radio which covers up the microphone on the radio itself. Digital radios have noise cancelling features, so yelling down to your chest will make it difficult for anyone to hear. Training is needed as digital has been used for many years throughout this area as well as nationwide. ISP had a pursuit recently and heard every word of the trooper yelling, location, description. CFD has used a conventional P25 system for many years, and during high stressed events if used properly, can also be heard.

It boils down to training and breaking old habits.
 

werinshades

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That may be how it's supposed to work, but with the CPD manpower shortage, I would t be surprised if this happens.
The focus was on the radios, but if officers are being assigned 10-99 to disturbances, that would be more of a concern. It didn't have anything to do with encryption, but more the proper use of digital radios and it won't change until better training is put in place.
 

Chicago2210

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The focus was on the radios, but if officers are being assigned 10-99 to disturbances, that would be more of a concern. It didn't have anything to do with encryption, but more the proper use of digital radios and it won't change until better training is put in place.
Also in the comment section they had the analog vs digital debate
 

werinshades

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Don't expect to hear much from CPD today as the announcement has already been made "all units at the Bud Biliken Day parade, switch over to B (Boy)-10/Event-1". More problems (than the normal) are expected.
 

Chicago2210

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The dispatcher on event is in the clear again, not sure what CFD is using there. CFD is on CW fire
 
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kb9mwr

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One thing that I've wondered about is interoperability. In Boston there are a number of public and college (private) agencies that have cross jurisdiction. It's useful for them to hear each others radio traffic. With encryption that can become much more complicated.

There is usually a default key that is used by a large number of agencies for this purpose.

I'd also like to remind people that previous "encrpytion" has been basically broken. Think DVP/DES or the earlier analog types like voice inversion. Unless the radio system supports over the air programming, in time whatever encrption type they are using at the time of system deployment will become weak and outdated.
 
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