Darwin Cove Convention Centre

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grant

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I was looking through the ACMA database, checking out the 800Mhz trunking band (865-870Mhz) when I noticed a recent and unusual entry

Darwin Cove Convention Centre (in Darwin, Northern Territory) is currently under construction - completion expected midyear. On January 29 three low-power 5 watt frequencies were issued with a 25K0D7W emission designator on 865.0375Mhz, 866.0375Mhz and 867.0375Mhz. The emission designator got me searching on google - sure enough I found it to be the normal TETRA emission standard.

So despite nothing so far on a google search it is starting to look like the international company IFC Odgen who will be running the facility will be using a 12 talkgroups 3 frequency TETRA trunking radio setup. (TETRA radios can operate 4 talkgroups within the 25kHz channel x 3 frequencies = 12 talkgroups).

I would interested to hear if there was any additional information available


Grant


PS Darwin is a great place to visit - warm and balmy all year round - just don't go swimming in the harbour as you will almost`certainly end up in a crocodile's belly for dinner.
 
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Raccon

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grant said:
Darwin Cove Convention Centre (in Darwin, Northern Territory) is currently under construction - completion expected midyear. On January 29 three low-power 5 watt frequencies were issued with a 25K0D7W emission designator on 865.0375Mhz, 866.0375Mhz and 867.0375Mhz. The emission designator got me searching on google - sure enough I found it to be the normal TETRA emission standard.
If this is a TETRA system then it should use frequency pairs with a duplex space of 45MHz, i.e. the frequencies 820.0375Mhz, 821.0375Mhz and 822.0375Mhz would need to be included, too. And it seems they are using an offset of +12.5KHz (hence xxx.0375MHz).

A quick check of the database confirms that they are using those pairs, so it very like is a TETRA system.

So despite nothing so far on a google search it is starting to look like the international company IFC Odgen who will be running the facility will be using a 12 talkgroups 3 frequency TETRA trunking radio setup. (TETRA radios can operate 4 talkgroups within the 25kHz channel x 3 frequencies = 12 talkgroups).
In case it's TETRA is would be one control channel + 11 traffic channels (which can be talkgroups (11 max. simultaenously), individual calls, gateway calls or data traffic, if enabled). Sorry for nitpicking. ;)
 

grant

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Hey that cool - you right about the 11 + 1 setup.

I am still working my way through the 865-870Mhz on-line database (over 1300 enteries) but noticed that there are a few others out there with the same emission designator .... Southern Cross University campus at Lismore (Northern NSW) and another entry for Surfers Paradise over the border in Queensland.

Personally I think that that 4 channel TETRA and it's 2 channel TDMA cousin Motorola TRBO will create a significant niche market in Australia for secure comms over the next several years.


Grant
 

grant

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This was on the TETRAMOU.com site.

Grant

Sepura TETRA arrives in New Zealand
13 February 2008

For the first time, Sepura digital radios are to be deployed in New Zealand, where a TETRA service is being launched by network operator Airwaves Limited.

Airwaves will initially provide Auckland-wide network coverage and plans to roll out to major cities as well as key transport corridors.

"We're targeting organisations needing one-to-one and one-to-many communications," says William Waterworth, director of Airwaves. "We are seeing interest in TETRA from local governments, passenger and cargo transportation services, utility companies and manufacturing and production sites and even trade contractor services."

"We selected TETRA for our Airwaves' network because the standard is widely supported by manufacturers worldwide. Moreover, it is truly versatile, bringing together mobile telephony, mobile radio and mobile data, meaning we can provide organisations with a comprehensive communications solution."

Airwaves directors William Waterworth and David Wall have almost 40 years experience in the telecommunications industry between them. Waterworth launched the first TETRA network in Australia (2006) as General Manager of Zeon Digital, a Motorola owned and operated network.

Kevin Graham, Sepura's Regional Director for Asia and the Pacific, said: "This is excellent news for the expansion of TETRA in Australasia, and it continues Sepura's market progress in the region. It's the third time in recent months that we have extended our customer base in to new countries, following recent orders in Australia and the Philippines."
 

grant

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TETRA now starting to make a significant impact in Australian Communications

I have finally found confirmation of what I long suspected after seeing numerous 25k0D7W emission designators appearing in the ACMA database in the last year or so. In addition to the TETRA list below Motorola has rolled an extensive 800Mhz TETRA network around the major population centres in Victoria (Melbourne, Geelong), New South Wales (Sydney, Wollongong, NSW Central Coast, Newcastle) and Queensland (Brisbane, Gold Coast, Sunshine Coast).

The 800Mhz analogue trunking networks are still up and running but are probably running on their last year or two before they are decommissioned. 800Mhz LTR already disappeared a year or two back.
I am not sure how the transition will be done but I am aware that there are some alternatives to the 800Mhz TETRA network in Sydney (VHF and UHF analogue MPT1327 trunking + 490Mhz LTR) - no doubt some customers will move away from the TETRA pathway, given the world's financial climate.


Grant



http://woodcomms.com.au/home


October 2008 - Tasmanian Electro Metallurgical Company
====================================
Temco is a BHP Billton company located 50km north of Launceston at Bell Bay
"As current radio systems reach their end of life, TEMCO will migrate and replace their current analogue systems with a digital TETRA system from Damm Cellular Systems using TetraFlex® infrastructure and Sepura radio terminal units.
TEMCO will take advantage of the new features offered by TETRA technology whilst being able to maintain communications to external agencies.
TETRA will allow radio users to maintain existing group call dispatch functionality whilst introducing new features such as excellent noise cancelling, data services, private radio to radio calls and full duplex private telephony calls. These features and functionality are packaged into the small outdoor rated modules of TetraFlex® and matched with the light weight but ruggedized Sepura handsets.


September 2008 - Grand Hyatt Hotel, Melbourne Victoria
=====================================
Grand Hyatt Hotel in Melbourne selects TETRA technology.
A second Hotel from the Hyatt Hotel group have chosen a TETRA digital radio system from Damm Cellular Systems and Sepura terminals. Damm's TetraFlex® infrastructure is matched with Sepura terminal units and integrated into a new Zonith Tetra Alarm Control System (TACS) and their Alcatel PCX4400 PABX.
TETRA provides all the required features of group call dispatch services, security, private radio to radio calls, telephony integration and alarm text messaging. The Zonith TACS integrates to the Hotel Building Management System (BMS) and Hotel jobs dispatch enabling for automatic deployment and escalation of alarm and job messages. The different messages are sent as formatted text to pre-determined staff member radio terminals. The staff members selected to receive these messages can "accept" or "reject" message allocations. Rejected or unanswered messages will be automatically escalated to other staff members according to predetermined business rules ensuring no alarm or job will go unanswered and the correct staff can perform the necessary actions in a timely, efficiency automated manor.


July 2008 - Palazzo Versace Hotel - Gold Coast, Queensland
=======================================
Palazzo Versace on the Gold Coast deploys TETRA technology.
The World first Versace Hotel chooses the latest in digital radio systems from Damm Cellular Systems. Damm's TetraFlex® infrastructure is matched with Sepura terminal units and integrated into their Commtech Messenger Dispatch/Alarm system and their Alcatel PCX4400 PABX.
TetraFlex® provides all the required features of group call dispatch services, security, private radio to radio calls, telephony integration and alarm text messaging. These features are all packaged into a small efficient TetraFlex® hardware platform and light weight but ruggedized Sepura handsets.


June 2008 - John Hunter Hospital - Newcastle, New South Wales
=========================================
John Hunter Hospital located in Newcastle selects TETRA technology as the upgrade path to their future radio communications needs.
John Hunter Hospital (JHH) a part of the Hunter New England Health Area Service selects a TETRA digital radio system from Damm Cellular Systems and Sepura radio terminals to upgrade current radio systems.
TETRA technology was selected as the best fit for their needs.
TETRA provides the mandatory features of group call dispatch and voice security but also provides new features of easy channel expansion, private radio to radio calls, full duplex telephony integration and text messaging. All this is delivered in a compact TetraFlex® system and small light weight Sepura handsets.


June 2008 - Australian Submarine Corporation - Adelaide South Australia
==============================================
Australian Submarine Corporation is to roll out TETRA.
Australian Submarine Corporation (ASC) site in Adelaide South Australia will install a digital TETRA system from Damm Cellular Systems using TetraFlex® infrastructure and Sepura terminal units.
ASC are to make good use of the features and flexibility provided by TETRA technology.
As TETRA is a Time Division Multiple Access (TDMA) technology and inherently a trunked technology, ASC are able to maximise hardware and spectrum efficiency and provide easy expansion flexibility when adding more terminals, talkgroups and site locations. With TETRA you can maintain standard PTT group call dispatch services whilst introducing new security enhancement features such as private radio to radio calls, full duplex private telephony calls, End to End encryption, Emergency override, GPS location, Lone worker/Man down, Alarm text messaging and Control capabilities. These features are all packaged into single light weight but ruggedized handsets. All these requirements can only be accomplished with TETRA.

March 2008 - Nordic refrigeration & Electrical Services - Whyalla South Australia
===================================================
Private operator Nordic Refriguration and Electrical Services is to deploy there own TETRA system.
A private service provider in Whyalla, one of the largest regional centres on the western shores of the Spencer Gulf in South Australia, will install a digital TETRA system from Damm Cellular Systems using TetraFlex® infrastructure and Sepura radio terminals.
Nordic are keen to take advantage of the standard features found within TETRA systems and terminals including high quality voice group call communications, full duplex telephony, private conversations, text messaging and GPS location services.


February 2008 - Darwin Convention Centre, Northern Territory
=========================================
Darwin Convention Centre selects TETRA as the technology of choice.
New Convention Centre in Darwin, Northern Territory Australia chooses the latest in digital radio systems from Damm Cellular Systems using TETRA technology and Damm's TetraFlex® infrastructure, matched with Sepura terminal units.
TETRA technology and the TetraFlex® infrastructure provides all the required features of group call dispatch services, security, private radio to radio calls, private full duplex telephony calls and alarm text messaging capabilities. These features are all packaged into a small efficient TetraFlex® hardware platform and light weight but ruggedized Sepura handsets.



November 2007 - Rio Tinto Aluminium Smelters - Tasmania, Queensland and New Zealand
==========================================================
Rio Tinto Aluminium to roll out TETRA solutions.
Three Rio Tinto Aluminium (RTA) smelters across Australia and New Zealand will replace their ailing analogue EDACS trunked radio system with a digital TETRA system from Damm Cellular Systems using TetraFlex® infrastructure and Teltronic radio terminals.
RTAs requirements were to preserve their existing functionality of a trunked system designed for efficiencies, management and control whilst maintaining group call dispatch services and being able to introduce new or enhanced features such as private radio to radio calls, full duplex telephony calls and alarm text messaging and control capabilities. These features must be delivered with a simple to manage and flexible network system and feature packed but ruggedized handsets. These requirements and more can be accomplished using TETRA technology.


September 2007 - Southern Cross University - Lismore, Northern New South Wales
======================================================
Southern Cross University Lismore first university to install TETRA.
One of New South Wales largest regional universities, Southern Cross University, Lismore campus, have replaced their ailing analogue radio system with a digital TETRA system from Damm Cellular Systems using TetraFlex® infrastructure and Sepura SRH3800 terminal units.
The Universities requirements were to maintain group call dispatch services whilst introducing new security enhancement features such as emergency group calls, private radio to radio calls, full duplex private telephony calls and future alarm text messaging capabilities. These features must also be packaged into a single light weight but ruggedised handset. All these requirements have been accomplished with TETRA.


April 2007 - Hyatt Regency - Gold Coast, Queensland
==================================
Hyatt Regency is the first to deploy a Campus Based Digital Terrestrial Trunked Radio system in Australia.
One of the worlds largest five star hotel chains, Hyatt Corporation at Sanctuary Cove on the Gold Coast, have chosen to use Damm Cellular Systems TetraFlex® infrastructure and Sepura SRH3800 terminal units.
The Hyatt’s requirements were simple. Acquire a communications system that would provide standard features such as radio group dispatch calls, emergency group calls, private radio to radio calls, full duplex private telephony calls and text messaging capabilities. These features must also be packaged into a single light weight but ruggedised handset. All these requirements have been accomplished with TETRA.
Geoff Wood, a director of GMG, said, “We are very pleased to partner with DAMM and Sepura to be the first to introduce this new open standard digital communications technology to the Australian commercial markets. We believe it will be a catalyst for the improvement and flexibility of voice and text services for many diverse industries throughout Australasia.
 

ghwood

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More information

So despite nothing so far on a google search it is starting to look like the international company IFC Odgen who will be running the facility will be using a 12 talkgroups 3 frequency TETRA trunking radio setup. (TETRA radios can operate 4 talkgroups within the 25kHz channel x 3 frequencies = 12 talkgroups).

Just a note to set the Tetra technology straight.

Tetra is a TDMA technology with 4 time-slots in a single carrier of 25kHz bandwidth. Tetra systems can have up to 8 carriers per site or node. The time-slots are all trunked meaning they are a shared resource to be used for voice and/or data by any radio on any talkgroup as required. The 1st time-slot is set aside as a Master Control CHannel (MCCH) and all other slots are available user traffic channels. Therefore a single carrier system will have 3xTraffic channels and 1xMCCH (3+1), a dual carrier system will have 7xTraffic channels and 1xMCCH (7+1) etc etc up to 31+1.

As the time-slots are trunked or dynamically shared, a single carrier system is not limited to 3 talkgroups but can have many more depending on how heavy the useage is. typically a single carrier system could have up to 100 users and 10 talkgroups on it.

For the record DarwinCC is a single carrier system, the other 2 licenses are unused but due to current ACMA rules, an 800MHz trunked LMR user must purchase a minimum of 3 licenses as it is a trunked band and the laws did not cater for spectrum efficient TDMA technologies such as Tetra.

cheers
 

Comint

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ghwood

Maybe you can clarify a couple of other matters about TETRA.

Is there such a thing as 'Simulcast' with TETRA.

Some 800 MHz frequencies have recently been "moved" from the Peninsula Building at Surfers Paradise, to Mt Dunsinane and Mutdapilly.

865.2875, 866.2875, and 867.2875 were moved to Mt Dunsinane only, with 868.2875 and 869.2875 shown as being at both Mt Dunsinane and Mutdapilly.

The Sites don't seem to be far enough apart (under ACMA rules / guidelines) to be separate systems. However, maybe under TETRA, having simultaneous transmissions on the same time-slot / frequency, on adjacent sites, may not be a problem.

A similar situation exists with Sites at Mt Stradbroke and Esk, with frequencies originally shown as being on Mt Coot-tha (86x.7875 MHz).

Edit: Forgot to mention that this system is believed to be part of the Motorola Zeon network, but shows on the ACMA Database as 16K03E emission.
--
Comint
 
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ghwood

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Comint

As Tetra is a multi-site systems it has to be simulcast but it is NOT same frequency simulcast. Adjacent sites or sites that can have overlap coverage must use different frequencies.

No doubt as Motorola migrates from the existing Smartnet systems in SE QLD and grow the Zeon Tetra system there will be lots of frequency re-allocations. I'm sure it will all sort itself out over time as Smartnet channels are switched off.

None of the New frequency allocations for the Zeon roll-out have used the correct emission designator for Tetra as far as I can tell. Don't know how or how long they can get away with that.
 
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