Some of you who monitor the MMR Network in greater detail than others may have noticed an interesting message in the raw data of late.
The message does not appear in the data from all network towers, yet, only those that have received upgrades.The works are part of a 130 million dollar agreement announced between Motorola and the State of Victoria in 2012. The agreement builds on the previous one that was in place between the two entities since the MMR Networks inital inception.
The message basically confirms whether a MMR Network site is now capable of TDMA for those radios that support such, such as the APX series generation of radios. At present the use is very limited, appearing to include only a few technicians and small number of Victoria Police elements with trial APX series radios.
An example of the raw data (from 0164h-0102 – 120 Collins Street) with the aforementioned tell-tale TDMA message is obtained using Pro96com software is presented below;
30 00 00 04 6A 08 66 70 43 A2 23 E1 05/28 17:34:43 TDMA Sync Broadcast – *Invalid* 2004/03/06 14:02 (930) -10
Any site having received an upgrade should show the ‘TDMA Sync Broadcast’ text in the raw data. At this stage a rough timeframe of the site upgrades is believed to be one site per week. I’m uncertain as to how many sites have already received the upgrades but you should be able to find out easily enough if you check the raw data via a sites control channel.