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I need some help.

I am trying to work out what type of radio system the security are on at Sydney Uni.

I have tracked down all the frequencies and can hear what I would call, data transmissions on some of the frequencies, but I am not expert and they do not sound like the APCO 25 digital ones.

I have set my 396XT just as conventional and NFM, but I suspect they must be using some sort of digital.

The frequencies are:

465.5000
462.9250
466.2500
466.0500
464.6625

These are from the ACMA web site and have heard the transmissions on all of these.

I have recorded the 'data' transmission on my phone and uploaded it, here is the link for anyone that wants to have a listen.

http://s256.photobucket.com/user/newy12 ... 8.mp4.html

If anyone has any theorys let me know.

I believe they use Motorola TRBO

pks__ wrote:I believe they use Motorola TRBO

Ok, thanks for that. Does not look like I will be listening to them.

It is very easy to listen to them with a computer


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I was able to get a good look at one of the radios today and they look like a Motorola DP3600 so I think they are on MOTOTRBO for sure.

brisbanescan wrote:It is very easy to listen to them with a computer


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Thanks Phil, I did do some googleing and noticed some guys decoding the MOTOTRBO stuff, might have a look and finding some software.

Did u get to see what the alpha tag:channel name was they were using?