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Tuscaloosa Amateur Radio Club

Programming the W4XI DMR Repeater Information

First, you need a DMR ID - get it at radioid.net - this will be your "Radio ID" when you program the radio.

Receive Frequency: 443.825
Transmit Frequency: 448.825 (+5 MHz offset)
Color Code (CC): 1

For Transmit Admit, set "Color Code Free" - this will have different names in different radio programming software, but the gist of it is this: if the repeater is active due to another user, even if you don't hear that user, your radio should refuse to transmit.

If you have a radio capable of encryption or voice inversion (scrambling), make sure they are not enabled (these are either outright illegal or of questionable legality for amateur radio usage).

For talkgroups and timeslot usage, the general rule is that timeslot 1 is for wide-area communications while timeslot 2 is for smaller area communications.

Recommended talkgroups to include:

Talkgroup (TG)
Time Slot (TS)
Description
Notes
1
1
W4XI LOCAL 1
Only heard on W4XI repeater
2
2
W4XI LOCAL 2
Only heard on W4XI repeater
3101
2
W4XI ALABAMA
31015
2
W4XI CNTRL AL
31013
2
W4XI ALERT
K4NWS monitors during severe wx
31010
2
W4XI AL LINK
310
1
W4XI TAC 310
Linked to DMR-MARC - see note below
311
1
W4XI TAC 311
Linked to DMR-MARC - see note below
312
1
W4XI TAC 312
Linked to DMR-MARC - see note below
313
1
W4XI TAC 313
314
1
W4XI TAC 314
315
1
W4XI TAC 315
316
1
W4XI TAC 316
317
1
W4XI TAC 317
318
1
W4XI TAC 318
319
1
W4XI TAC 318

If you wish to talk with non-local folks, you may want one or more of the following:

Talkgroup (TG)
Time Slot (TS)
Description
Notes
3100
1
W4XI USA
USA Nationwide
31604
1
W4XI REGION 4
91
1
W4XI WORLDWIDE
Worldwide
92
1
W4XI Europe
Europe
93
1
W4XI NA
North America

There are lots of others; for a full list, see the Brandmeister TalkGroups page. Keep in mind that all of those should use timeslot 1.

The only "on all the time" talkgroups on the W4XI repeater are 1, 2, 3101, 31013, and 31015. Others are what's known as "dynamic" talkgroups; these are temporarily activated with a PTT press and automatically deactivate after 15 minutes of inactivity.

TAC 310, 311, 312 Usage Notes

TAC 310, 311, and 312 are bridged among different networks through DMRX so that communications between different networks are possible. Please allow time between each transmission to allow others to also use the talk groups. When a users on a cbridge activate a talkgroup, they will not hear anything until the next transmission starts. We are a guest on these talk groups. TAC 310 - 312 should NOT be used as a primary talk groups by anyone! If you wish to have longer conversations, please use TAC 313-319.

DMR Simplex Frequencies

There are also some "standard" frequencies for simplex use on DMR:

Frequency
Talkgroup (TG)
Time Slot (TS)
Color Code (CC)
Notes
145.510
99
1
1
TxAdmitCritera: Always
145.790
99
1
1
TxAdmitCritera: Always
433.450
99
1
1
TxAdmitCritera: Always
441.000
99
1
1
TxAdmitCritera: Always
446.075
99
1
1
TxAdmitCritera: Always
446.500
99
1
1
TxAdmitCritera: Always

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