scanSydney

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

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

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

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.

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

so far two of the the newly installed freqs have become active,, and yes they are on acma,, recheck your sms's

grant,, now that you have rementioned the noise,, I think it may be nxdn,, its just the long data noise as they tx

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