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Motorola TRBO
Posted: Fri Apr 16, 2010 12:04 pm
by cartman
Has anybody located a live TRBO digital signal in Sydney
Trying to get my head around what it sounds like - compared to say NXDN
I think I heard it in Melbourne on 464MHz (Convention Centre)
From my new location I am hearing quite a bit of these new digital signals ... mainly NXDN
Grant
Re: Motorola TRBO
Posted: Sat Apr 17, 2010 9:29 pm
by gus289
Try monitoring Penrith Panthers on 472.400mhz you will hear a synchronization packet every 60secs if no traffic.It is a non trunked repeater site.Possibly used by bar and gaming staff. Main security ch 465.250 analogue a BTW ch at this time.
Re: Motorola TRBO
Posted: Sun Apr 25, 2010 4:42 pm
by cartman
This site is definitely TRBO
493.525MHz - Merivale (The EStablishment Hotel) 252 George St Sydney
The synchronization packet occurs every 60secs
Any other time is actually conversation taking place
Sounds like a sonic driver
Grant
Re: Motorola TRBO
Posted: Sun Apr 25, 2010 6:25 pm
by Chrisco
grant
after doing the anzac march I saw one of the radio being used by the rsl marshals it look like the ones I was using over the Easter weekend. Moto Trbo
Re: Motorola TRBO
Posted: Sun Apr 25, 2010 7:15 pm
by cartman
Apparently these TRBO have a characteristic 60 sec pulse (confirmed by somebody who installs them) - like a radio welfare check
Have you heard the Chatswood frequency give out the pulse - i have heard the digital signal on 472.275 from Blacktown but no pulse for some reason
Grant
Re: Motorola TRBO
Posted: Mon Apr 26, 2010 1:19 pm
by gus289
472.275 may have been in simplex. NO TDMA synchronization packet from repeater as 1 frequency = 1channel in simplex but with repeater 1 frequency = 2channels.