Talk Groups, Time Slots and Colour Codes 

The DMR system uses “colour codes” which function in a very similar fashion to CTCSS tones on analogue repeaters.  A radio programmed with one colour code will not be able to transmit on a repeater programed with another.

All VK DMR network repeaters and hotspots use colour code 1.

Each DMR repeater connected to the network has two time slots, and each slot has a number of talk groups.

VK DMR repeaters and hotspots use the following slots and talk groups.  Note that you don’t need to program every one of these TG’s

Time Slot 2 – TG505 -> TG505 is meant to be used as a “Call Talk Group”.

TG505 keys every VK repeater and connected hotspot. Once you have established contact with another station please QSY off TG505 to a TS1 Talk Group to leave TG505 free for others to call.

TGs in black are static – always on.

TGs in blue are user activated (UA – you need to “kerchunk” them).

User activated TGs are activated by pressing your PTT for about 2 seconds with the TG selected.  Only repeaters and hotspots used in the QSO are connected.

Time slot 1

Time slot 2

TG 1 WW Worldwide

TG 505 Calling and the Tuesday evening net 


TG9990 Parrot – Repeaters or Duplex Hotspots

(Time slot 1 for Simplex Hotspots)

TG 5 Broadcasts


TG 8 Regional/State connections (May be revised)


TG 9 Local


TG 13 WWE World Wide English


TG 3JOTA (Scouts)


TG 53 Chat


TG 80 UK Chat


TG 113


TG 123 


TG 133 USA


TG 143 TAC English


TG 153 TAC English




TG 320 and 321 XLX Quadnet 1 and 2


TG 530 ZL – DMR+ NZ


TG 870 Wales


TG 880 Northern Ireland


TG 1910 ARNSW Linked Repeaters


TG 1911 FNQ Linked Repeaters


TG 1921 Scouts Victoria


TG 1922 Scouts Victoria


TG 1923 Scouts Victoria


TG 1924 Scouts Victoria


TG 2351 UK Calling


TG 3167 USA DMR AllStar


TG 3191 Digital Radio


TG 3199 Skywarn & WX


TG 3801 – 3809 Chat – Not state based anymore




TG 8406 DMR MARC Net


TG 8409 CQ-UK Fusion/Wires X (UK TG 4409)


TG 8509 VK/ZL Sport


TG 8540 XLX 313A Constellation


TG 8555 South Pacific


TG8454 XLX600E – peanut


TG’s are explained in detail below, where necessary.


Time Slot 1 – TG1 = world wide calling – keys EVERY DMR repeater on the worldwide DMR+ network 

Time slot 1 – TG3 = US wide

Time slot 1 – TG5 = used for broadcasts.

Time Slot 1 – TG9 = Keys your local repeater only

Time Slot 1  – TG13 = worldwide English calling channel.  Keys every repeater on the United Kingdom Phoenix DMR network. 

Time Slot 1 – TG30 = Used for JOTA.  May be used for general comms at other times.

Time Slot 1 – TG113/123/143/153 = international user activated chat channels.  Normally used after a call on TG1 or 13.  Be aware that these channels are used internationally.

Time Slot 1 – TG53, TG3801-3809 and TG3810 = user activated chat channels for VK.  3810 is intended for WICEN, but may be used for normal ops when WICEN is not using it. 

Time slot 1 – TG80 = 80 is used as a chat channel on the UK Phoenix DMR network.  It is quite active, and worth a listen.

Time slot 1 – TG530 = Connects to Slot 2 on the ZL network – Presently only passes ZL DMR ID’s. 

Time slot 1 – TG8409 = CQ-UK Wires X – Fusion cross mode.

Time slot 1 – TG8540 = Connects to XLX 313A constellation.

Time slot 1 – TG1910 = links repeaters supplied by AR NSW.  1910 was the year AR NSW (known as the WIA then) was formed. 

Time slot 1 – TG1911 = links FNQ repeaters only – replaces TG8 for those repeaters.

Time slot 1 – TG1921/22/23/24 = Scout Victoria supplied repeaters.

The TG8 groups are as follows:

TG8 Group Repeaters linked


Simplex Operation:

If you are close to another operator you can use DMR simplex to chat directly to each other, without a repeater or hotspot.

Simplex channel configuration as follows:

  • Colour code 1
  • Talk Group 99
  • Slot 1

Frequency  439.200 simplex 70cm – See band plan for other frequencies.