Why is SM 660 better than XT30?
- Maximum range (claimed)8 km vs 6 km+33%
Why is XT30 better than SM 660?
- Channels8 vs 162×
Specifications
Side by side
| Radio & range | ||
| Radio standards | PMR446 | PMR446 |
| Licence | Licence-free | Licence-free |
| Digital mode (DMR / dPMR) | No | No |
| Frequency ranges | 446 MHz | 446 MHz |
| Transmit power | 0.5 W | 0.5 W |
| Channels | 8 | 16 |
| Maximum range (claimed) | 8 km | 6 km |
| Privacy codes (CTCSS / DCS) | — | 38 |
| CTCSS / DCS sub-tones | — | Yes |
| Power & battery | ||
| Battery capacity | — | 300 mAh |
| Power source | — | AA / AAA batteries |
| Runs on AA/AAA batteries too | — | Yes |
| USB-C charging | — | No |
| Design & durability | ||
| Weight | — | 75 g |
| Width | — | 48 mm |
| Height | — | 90 mm |
| Depth | — | 32 mm |
| Display | — | Monochrome display |
| Colours | White | Black, Green |
| Features | ||
| VOX (hands-free) | Yes | Yes |
| Channel scan | — | Yes |
| Emergency / SOS alarm | — | Yes |
| Key lock | — | Yes |
| Roger beep | — | Yes |
| Connectivity | ||
| Headset / earpiece jack | — | Yes |
| Connectors | — | Kopfhörer |
| Radios in the base pack | 3 | 2 |
