[TheList] P25 control channels

DogSecurity - Richard richard at dogsecurity.co.nz
Sun May 20 10:01:45 AEST 2018


I'm not sure I'd say that Uniden are useless per se, they're just marketing towards their biggest market - America.

MPT1327 never took off in the US, it's an old trunking solution that was big in Europe.  It's hard to make something that's going to appeal to maybe 5000 people when p25 unencrypted might appeal to 10 times that number, so why spend time coding for something that's not in their country, and they can't test to see if it even works? 
For example motoTrbo DM4000 series have a known issue on Fleetlink extenders. The firmware is nearly ready for release I'm told, after talking to some acquaintances in the know at Teamtalk, however for the firmware to be written, the coders in Penang need to understand the issue, write firmware to fix, then it has to be sent to here or Aussie for testing, as they don't have a 1327 system to test against, then tweaks need to be made so the process starts again.  That on top of language and timezone barriers don't make for a quick fix. It's been a known problem for about 6 months.   

Of interest to some is this tier3 system they're going to make should be quite nice when it's complete. it should have better coverage than Fleetlink as eventually as the Fleetlink and Actionet sites are apparently going to all be linked together, and those two separate systems will be slowly phased out. 

In saying that, I'm really looking forward to hearing more about the Uniden SDS1000.  I sometimes carry around my Icom r5, but something that can RX all bands and do DMR would be handy for work testing as well, although we usually just grab a radio out of the rental fleet and program that up. 
Richard
----------------------
Sent from a mobile device. Please excuse my brevity, punctuation and spelling. 

On 18 May 2018 10:50:24 AM NZST, Radio Scanner <rs157950 at gmail.com> wrote:
>You need to first determine if there are trunking systems are in your 
>area. Unfortunately Uniden were too useless to include MPT1327 support 
>in any of their scanners so there isn't a lot of trunking you can
>listen 
>to with this scanner in NZ.
>
>If you have scanned around and found some channels with a constant 
>signal that isn't in the 414-420Mhz, 140-144Mhz or 490-500Mhz bands, 
>there's a chance it could be a control channel you can decode using the
>
>396T.
>
>https://www.sigidwiki.com/ is a good resource as well if you aren't
>sure 
>exactly what you have found.
>
>On 16/05/2018 9:50 p.m., Rob Vile wrote:
>> Better late than never I thought I might have a play around with 
>> trunking....Can anyone give me a heads up on a how to as not quite 
>> sure what the control freqs are or whether im putting it together 
>> right...its on a 396T.  Any help would be appreciated and if needed I
>
>> can ring and talk .  Tauranga location Cheers
>>
>>
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