VK2CJC-L Gateway Status: Gateway online

VK2CJC-L is a Tetra gateway providing access to the amateur TETRA network with coverage across south east Brisbane, Redlands, and North Stradbroke Island.

(note: This gateway was relocated from Sydney to Brisbane).

Gateway Coverage

VK2CJC-L covers the South Eastern side of Brisbane and North Stradbroke Island.

The gateway transmits at a maximum of 3 watts, utilising an omni-directional antenna mounted 8 meters above the ground.

Below are computer-generated maps (from ve2dbe’s mobile online mapping tool) showing expected coverage from the gateway with the receiving radio located 1 meter above the ground.

Green represents where you should receive coverage. Yellow area represents where you may receive coverage.

Accessing the gateway

To use the TETRA gateway, you must use a TETRA UHF radio that’s capable of transmitting and receiving on 439.250 in DMO mode.

CallsignVK2CJC-L (appears as EL-VK2CJC on aprs.fi)
Gateway Idents every 60 minutes on the hour
FrequencyTX: 439.250
RX: 439.250
Type: DMO
Tetra DetailsMCC: 901
MNC: 16383
Timeout180 seconds (3 minutes)
EcholinkNode 475538 (VK2JC-L)

To have your TETRA radio location appear on aprs.fi, submit your DMR ID, name and location via the Contact me form.

Internet Link

The TETRA gateway is linked to the internet via SVXLink to a global network of Tetra Repeaters in other countries, and to Echolink. There are a number of talk groups available within the system.

You can view the current Tetra System Dashboard here: VK TETRA Dashboard

By default, the gateway listens on TG 505 (Australia). If someone changes the talk group to something other than 505 and no audio is transmitted or received after 30 seconds the gateway will revert back to TG 505.

Additional talk groups are available. You can see the list of available talkgroups on the Talkgroups page

Gateway Hardware

Link Radio

I’m using a Motorola MTM800e as the link radio. This radio is connected to a Raspberry Pi 3B running SVXLINK via a 3.3volt FTDI (RS232 to USB) cable for data and PTT control. The radio is also connected to a Signalink for send/receive audio to/from the Pi to send/receive audio to SVXLINK which is connected to the Australian Tetra Reflector running on talkgroup 505.