GRC Groups
| Group | Prefix | Note | Reach |
|---|---|---|---|
| Group: 2 | Prefix: EU | Note: Europe | Reach: Europe-wide |
| Group: 3 | Prefix: US | Note: USA | Reach: US-wide |
| Group: 9 | Prefix: LOC | Note: local group | Range: only within the MeshCom HF cloud |
| Group: 10 | Prefix: WW-GE | Note: worldwide German | Reach: German-language messages |
| Group: 13 | Prefix: WW-EN | Note: worldwide english | Reach: English-language messages |
| Group: 20 | Prefix: DACH | Note: D-A-CH | Reach: Germany, Austria, Switzerland |
| Group: 204 | Prefix: PA | Note: Netherlands | Range: |
| Group: 206 | Prefix: ON | Note: Belgium | Range: |
| Group: 208 | Prefix: F | Note: France | Range: |
| Group: 214 | Prefix: EA | Note: Spain | Range: |
| Group: 222 | Prefix: I | Note: Italy | Range: |
| Group: 226 | Prefix: YO | Note: Romania | Range: |
| Group: 228 | Prefix: HB | Note: Switzerland | Range: |
| Group: 232 | Prefix: OE | Note: Austria | Range: |
| Group: 2321 - 2329 | Prefix: OE1-OE9 | Note: OE federal states | Range: |
| Group: 234 | Prefix: G | Note: Great Britain | Range: |
| Group: 238 | Prefix: OZ | Note: Denmark | Range: |
| Group: 240 | Prefix: SA | Note: Sweden | Range: |
| Group: 260 | Prefix: SP | Note: Poland | Range: |
| Group: 262 | Prefix: DL | Note: Germany | Range: |
| Group: 26200-26299 | Prefix: DL00-DL99 | Note: Germany regional groups | Reach: German-language messages |
| Group: 26216 | Prefix: DL 16 | Note: Chiemgau | Range: |
| Group: 26220 | Prefix: DL 20 | Note: Hamburg region | Range: |
| Group: 26221 | Prefix: DL 21 | Note: Hamburg City | Range: |
| Group: 26242 | Prefix: DL 42 | Note: Münsterland | Range: |
| Group: 26244 | Prefix: DL 44 | Note: Freising | Range: |
| Group: 26255 | Prefix: DL 55 | Note: Palatinate | Range: |
| Group: 26269 | Prefix: DL 69 | Note: Hesse/Rhineland-Palatinate | Range: |
| Group: 26298 | Prefix: DL 98 | Note: Thuringia | Range: |
| Group: 26379 | Prefix: DL3 79 | Note: Hochrhein | Range: |
| Group: 293 | Prefix: S5 | Note: Slovenia | Range: |
| Group: 460 | Prefix: B | Note: China | Range: |
| Group: 901 | Prefix: 9V | Note: Singapore | Range: |