Why is RB637 better than RT668?
- Battery capacity2,000 mAh vs 1,200 mAh+67%
Why is RT668 better than RB637?
RT668 has no measurable advantages in this pair.
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 | 16 | 16 |
| Maximum range (claimed) | 2 km | — |
| CTCSS / DCS sub-tones | — | Yes |
| Squelch | — | adjustable |
| Power & battery | ||
| Battery capacity | 2,000 mAh | 1,200 mAh |
| Battery voltage | 3.7 V | 3.7 V |
| Power source | Rechargeable pack | Rechargeable pack |
| USB-C charging | No | No |
| Battery level indicator | Yes | Yes |
| Design & durability | ||
| Weight | — | 161 g |
| Width | — | 116 mm |
| Height | — | 50 mm |
| Depth | — | 35 mm |
| Shockproof | Yes | Yes |
| Display | — | No display |
| Colours | Black | — |
| Features | ||
| VOX (hands-free) | Yes | Yes |
| Channel scan | — | Yes |
| Flashlight | Yes | — |
| Monitor button | — | Yes |
| Voice encryption / scrambler | — | Yes |
| PC programmable | — | Yes |
| Connectivity | ||
| Headset / earpiece jack | Yes | Yes |
| Connectors | 2,5 und 3,5 mm | 2,5 und 3,5 mm |
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