In a world where most DMR contacts happen through repeaters or hotspots, DMR simplex frequencies remain an essential tool for every ham. Whether you’re coordinating with friends at a field-day site, setting up a portable station in the backcountry, or operating during an emergency when repeaters fail, simplex lets two DMR radios talk directly – no network required.
This guide presents the key DMR simplex frequencies for each IARU Region so you can program your radio correctly whether you’re in North America, Europe, or the Asia-Pacific. We also include important local-plan notes so you can stay legal and avoid interference.
What Are DMR Simplex Frequencies?
In standard DMR operation, your handheld or mobile radio usually talks to a repeater, which then relays your signal to other stations or into a linked network such as BrandMeister. DMR simplex skips that infrastructure. Instead, two or more radios transmit and receive on the same frequency and timeslot – much like traditional analog simplex channels such as 146.520 MHz FM.
Because there’s no repeater to boost the signal, simplex range is limited by terrain, antenna height, and output power. But the advantage is resilience: if the Internet link or repeater goes down, you can still communicate radio-to-radio.
Standard settings for most DMR simplex channels:
- Color Code (CC): 1 (default in most regions)
- Time Slot (TS): 1 (unless otherwise noted)
- Talkgroup (TG): 99 (widely used as the “simplex” talkgroup)
These defaults make it easy for two operators to program their radios the same way and make a QSO instantly.
DMR Simplex Frequencies by IARU Region
Below are the most-commonly used DMR simplex frequencies listed region by region. Always confirm your country’s national band plan before use.
IARU Region 1: Europe, Africa & Middle East
| Freq. | CC | TS | TG | Notes |
|---|---|---|---|---|
| 50.6300 | 1 | 1 | 99 | 2 |
| 50.6300 | 1 | 1 | 9 | 2 (UK) |
| 144.6125 | 1 | 1 | 9 | 2 (UK) |
| 145.3750 | 1 | 1 | 99 | 2 |
| 433.4500 | 1 | 1 | 99 | 2 |
| 438.6125 | 1 | 1 | 9 | 2 (UK) |
| 1297.7250 | 1 | 1 | 99 | 2 |
| 1297.7250 | 1 | 1 | 9 | 2 (UK) |
Notes:
- Calling frequency for DMR
- Calling frequency for all digital voice modes (DMR, Yaesu Fusion, D-STAR, etc.)
- Proposed calling frequency
- Special events calling frequency
IARU Region 2: North & South America
| Freq. | CC | TS | TG | Notes |
|---|---|---|---|---|
| 50.6300 | 1 | 1 | 99 | 2, 3 |
| 145.5100 | 1 | 1 | 99 | 1 |
| 145.7900 | 1 | 1 | 99 | 1 |
| 223.4000 | 1 | 1 | 99 | 2, 3 |
| 441.0000 | 1 | 1 | 99 | 1 |
| 446.5000 | 1 | 1 | 99 | 1 |
| 446.0750 | 1 | 1 | 99 | 1, 4 |
| 902.1250 | 1 | 1 | 99 | 2, 3 |
| 1297.7250 | 1 | 1 | 99 | 2, 3 |
Notes:
- Calling frequency for DMR
- Calling frequency for all digital voice modes (DMR, Yaesu Fusion, D-STAR, etc.)
- Proposed calling frequency
- Special events calling frequency
IARU Region 3: Asia-Pacific
| Freq. | CC | TS | TG | Notes* |
|---|---|---|---|---|
| 144.6750 | 1 | 1 | 99 | 2 (NZ) |
| 144.8000 | 1 | 1 | 99 | 2 (AU) |
| 145.3000 | 1 | 1 | 99 | 2 (JP) |
| 432.8000 | 1 | 1 | 99 | 2 (NZ) |
| 433.3000 | 1 | 1 | 99 | 2 (JP) |
| 439.2000 | 1 | 1 | 99 | 2 (AU) |
| 925.8000 | 1 | 1 | 99 | 2 (NZ) |
Notes:
- Calling frequency for DMR
- Calling frequency for all digital voice modes (DMR, Yaesu Fusion, D-STAR, etc.)
- Proposed calling frequency
- Special events calling frequency
Pro Tip: Always confirm that these frequencies are permitted by your regional band-plan before use, especially in shared segments near repeater inputs.
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