TASMANIAN GRN

MMR, RMR, SAGRN, GWN, NTESTN, WAERN

TASMANIAN GRN

Postby cartman » Fri Mar 06, 2020 7:12 pm

As many of you are aware the Tasmania Government put out a request for tender on 24 November 2018 for a single P25-compliant Tasmanian Government Radio Network (TasGRN) to provide enhanced communication and facilitate interoperability between Tasmania Police, Tasmania Fire Service, Ambulance Tasmania, State Emergency Service, Parks and Wildlife Service, Sustainable Timber Tasmania, TasNetworks and Hydro Tasmania.

Subsequent to that, no information on the outcome of that tender has been forthcoming.

However as the folk on the Tasmania scanning forum have noted, it is starting to look like Telstra is going to get the nod and perhaps the TasGRN set up to link in with the Victorian MMR/RMR systems (similar to the way the ACT run their system off the NSWGRN)

Updated on 15 February 2020
https://web.acma.gov.au/rrl/client_sear ... FFSET=1200

https://web.acma.gov.au/rrl/site_search ... E_ID=32953
MT RUMNEY TAS 7170
-42.860752°,147.454415°

Mt Rumney is located between Hobart and the airport at an altitude of 333 metres (1092 feet)

The local Tasmanian scanner folk have noted only data and the i65536 BSI site marker to date

167.5875 Control Channel active NAC: 5E4h
167.8875
168.0375

416.2375 Control channel active NAC: 5E1h
416.7375
417.2375

Interesting developments
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Re: TASMANIAN GRN

Postby Scotty » Fri Mar 06, 2020 9:44 pm

VHF and UHF - hopefully it won’t be a mash-up like in VIC and they will settle on one band.
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Re: TASMANIAN GRN

Postby cartman » Sat Mar 07, 2020 2:43 am

Looks more like testing signal performance perhaps.
VHF would probably perform better in the mountainous terrain
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Re: TASMANIAN GRN

Postby Radio_Australia » Mon Mar 09, 2020 4:40 pm

VHF would definitely be the good choice due to terrain , but UHF is better for building penetration
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TASMANIAN GRN

Postby Scotty » Mon Mar 09, 2020 5:44 pm

UHF would have to be the better all round choice for many reasons, including better interoperability with (essentially) all other states GRN networks.

And with the current EDACS network down there in the 800MHz band there would likely be little real world change if they were to go UHF.
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Re: TASMANIAN GRN

Postby Radio_Australia » Mon Mar 09, 2020 8:45 pm

Scotty wrote:UHF would have to be the better all round choice for many reasons, including better interoperability with (essentially) all other states GRN networks.

And with the current EDACS network down there in the 800MHz band there would likely be little real world change if they were to go UHF.


It’s nothing a Interoperability Gateway can’t fix
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Re: TASMANIAN GRN

Postby system_tech » Tue Mar 10, 2020 12:58 pm

Radio_Australia wrote:
Scotty wrote:UHF would have to be the better all round choice for many reasons, including better interoperability with (essentially) all other states GRN networks.

And with the current EDACS network down there in the 800MHz band there would likely be little real world change if they were to go UHF.


It’s nothing a Interoperability Gateway can’t fix


Telstra Fleetcoms (now on its way out) has VHF and UHF sites. Often they are collocated. They feed in to the same switch and radios can converse with each other from either band, via private call or talkgroup call. Nothing new here.

So with such a radio network, you could hypothetically make say suburban / city areas UHF and country / mountainous areas VHF, and have complete interoperability. If you had appropriate dual band radios, you would never be out of coverage despite the site's frequency band.

Alternatively:

UHF Mobile & VHF Portable, for normally city / suburban vehicles.
VHF Mobiles & UHF Portable, for normally country vehicles.

Split frequency may well be complimentary, but certainly a bit more engineering involved.

But as stated just UHF would be better than 800 MHz :-)

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