A popular daytime band for long-distance communication that thrives during high solar activity.
Groundwave max of 40 miles. World-wide daytime communications via skip.
General, Advanced, or Amateur Extra Amateur Radio license required to operate and each have different frequency allowances. Technician license holders may also operate using CW mode on the General data portion of the allowances.
| License | Data | Voice | Voice Mode |
|---|---|---|---|
| Technician | 21.025 - 21.200* | N/A | N/A |
| General | 21.025 - 21.200 | 21.275 - 21.450 | USB |
| Advanced | 21.025 - 21.200 | 21.225 - 21.450 | USB |
| Extra | 21.000 - 21.200 | 21.200 - 21.450 | USB |
| Frequency | Description |
|---|---|
| 21.075 - 21.077 | FT8 Digital Mode |
| 21.078 | JS8Call Digital Mode |
| 21.080 | PSK31 Digital Mode |
| 21.295 | Long-Distance Calling Frequency |
| 21.360 | Global Emergency Operations Frequency |
| 21.385 | SSB Voice Calling Frequency |
Note: All frequencies listed are in MegaHertz (MHz)
