Charlestown Square Shopping Centre

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Garry
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Charlestown Square Shopping Centre

Post by Garry » Fri Aug 27, 2010 12:24 am

Charlestown Square Shopping Centre opens part of its multi million dollar expansion friday 27/8.

Tonight,, it appears that they have gone to the dark side now using turbo digi
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Bigfella237
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Re: Charlestown Square Shopping Centre

Post by Bigfella237 » Fri Aug 27, 2010 1:19 am

It seems to me that scanner manufacturers are going to have to start developing receivers that will decode all these new-fangled modes soon or we'll have nothing to listen to? APCO25 is becoming a smaller and smaller percentage of what's out there these days!

Andrew

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Re: Charlestown Square Shopping Centre

Post by centralcoastscanman » Fri Aug 27, 2010 6:23 am

yep agree there, whether or not they will let us listen to TRBO will be interesting as i thought it had some layer of encryption or something in it...

ps, i've not done any reading thats just what i was told by some sales people trying to sell it to me a while ago at work

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Re: Charlestown Square Shopping Centre

Post by citabria » Fri Aug 27, 2010 10:29 am

TRBO has two optional modes of encryption - Basic and Enhanced privacy. Basic Privacy is just that, an 8-bit key is used to scramble the transmissions, however the calculations to figure out the key would take a second at most on a modern PC to retrieve they key.

Enhanced privacy uses 40-bit RC4 encryption (still considered weak) which would take considerably longer to perform a brute force key search on.

Interestingly, TRBO is based on the open ETSI standards, however both TRBO privacy modes are proprietary and /\/\otorola only.

There is open source software available that allows you to listen to unencrypted TRBO transmissions (assuming you can work a linux machine). Have a look on radioreference for the DSD project.

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cartman
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Re: Charlestown Square Shopping Centre

Post by cartman » Fri Aug 27, 2010 11:37 am

Garry - trbo systems appear to a 60 second pulse. Have u heard it? How many of the centre freqs are trbo ? There is no obvious acma entry for this shopping centre or have they switched to a rental frequency?. Grant
Professional Scanner nut. Ibis bin chicken of radio scraps
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Garry
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Re: Charlestown Square Shopping Centre

Post by Garry » Fri Aug 27, 2010 12:19 pm

so far two of the the newly installed freqs have become active,, and yes they are on acma,, recheck your sms's
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Garry
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Re: Charlestown Square Shopping Centre

Post by Garry » Fri Aug 27, 2010 12:24 pm

grant,, now that you have rementioned the noise,, I think it may be nxdn,, its just the long data noise as they tx
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cartman
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Re: Charlestown Square Shopping Centre

Post by cartman » Fri Aug 27, 2010 1:26 pm

The noises sound similar but I find that trbo have a short buzz for a second or two every 60 seconds when it is otherwise quiet .... Grant
Professional Scanner nut. Ibis bin chicken of radio scraps
Scanners:
Uniden 325P2, Whistler TRX-1, GRE PSR800 x 2, Uniden 780 x 3, Uniden 796, Uniden 396 x 2, Uniden 246,
Software:
DSD v2.368, Unitrunker, Trunkview

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