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Originally Posted by grant
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.
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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.
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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).
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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.
