[SMCARA] encryption on St. Mary's Co. trunked system - public forum

[Aaron Giles]

They are not using P25 Phase 2 yet, although I believe that is 
eventually the plan.  Right now the Sheriff and MSP are using encrypted 
P25 Phase 1.

It's true that the PSR-800 is the only scanner capable of receiving P25 
Phase 2 TDMA right now, and the company that manufactures it has gone 
out of business.  Also, the performance of most P25-capable scanners in 
a simulcast overlap interference environment leaves a lot to be 
desired.  Eventually the scanner radio market will catch up, just like 
it took many years before scanners could properly track conversations on 
the "analog" Motorola and EDACS trunked systems.  Although it may take a 
few years for this to happen, it's much less of a problem than the 
indiscriminate use of encryption, for which there is ultimately no 
workaround.

73 de N8TVQ
Aaron

On 09/08/2013 04:05 PM, Kim Wells K3OCM wrote:
>
> Is it a result of encryption?
>   -OR-
> The use of P25 Phase 2 (P2P2-TDMA)
>  (TWO conversations per frequency)?
>
> Reference the following link
> http://www.p25phase2.com/p25-phase-2
>
>
> Uniden does not make a P2-TDMA capable scanner.
> GRE makes the PSR-800 which is X2-TMDA capable and may be or soon to 
> be P2-TDMA capable.
>
>
> Kim
> K3OCM
>
>
>
> At 14:35 9/8/2013, you wrote:
>> I know some of you are aware that the county recently switched to a 
>> new P25 trunked radio system, and with the switch all police traffic 
>> on the new system has been encrypted.  I wrote an open letter to the 
>> county commissioners about this, and it was published in the 
>> Enterprise last month.
>>
>> http://www.somdnews.com/article/20130816/OPINION/130819522/1084/reopen-police-radio-communications&template=southernMaryland 
>>
>>
>> I have received supportive messages from several of the county 
>> commissioners in response to my letter.  The commissioners will be 
>> holding a public forum this Tuesday evening during which the issue of 
>> encryption on the new radio system will be discussed. They have 
>> invited those of us who care about this issue to attend the forum and 
>> speak.  I will definitely be there, and I hope that many of you will 
>> join me.
>>
>> The forum will be held on Tuesday, September 10 at 6:30 PM at the 
>> Northern Senior Center, 29655 Charlotte Hall Road in Charlotte Hall.
>> http://goo.gl/maps/0J7Mr
>>
>> This public notice indicates that anyone wishing to speak at the 
>> forum will be allowed up to 3 minutes to address the commissioners:
>> http://www.thebaynet.com/News/index.cfm/fa/viewStory/story_ID/33445/comment_categoryID/33445-News/comment/Y 
>>
>>
>> Please spread the word to anyone who may be interested.
>>
>> 73 de N8TVQ
>> Aaron