vs
2.3Range & power4.4
5.8Battery7.6
7.8Ruggedness6.3
Dimensions
Size comparison
S1 E UFRB648 Plus
| S1 E UF | RB648 Plus | Difference | |
|---|---|---|---|
| Height | 50 mm | 33 mm | +17 mm |
| Width | 94 mm | 206 mm | −112 mm |
| Depth | 21 mm | 60 mm | −39 mm |
Drawn to the same scale from the official dimensions (front and side).
Why is S1 E UF better than RB648 Plus?
S1 E UF has no measurable advantages in this pair.
Why is RB648 Plus better than S1 E UF?
- Transmit power1 W vs 5 W5×
- Battery capacity1,800 mAh vs 2,000 mAh+11%
Specifications
Side by side
| Radio & range | ||
| Radio standards | Amateur UHF | — |
| Licence | Business licence | — |
| Dual band (VHF + UHF) | — | Yes |
| Frequency ranges | 430 - 480 MHz | 400 - 480 MHz |
| Transmit power | 1 W | 5 W |
| Channels | 16 | 16 |
| Maximum range (claimed) | — | 5 km |
| Privacy codes (CTCSS / DCS) | — | 155 |
| CTCSS / DCS sub-tones | — | Yes |
| Call tones | — | 10 |
| Power & battery | ||
| Battery capacity | 1,800 mAh | 2,000 mAh |
| Battery voltage | 3.8 V | 7.4 V |
| Power source | Rechargeable pack | Rechargeable pack |
| USB-C charging | Yes | Yes |
| Battery level indicator | Yes | Yes |
| Design & durability | ||
| Weight | 85 g | — |
| Width | 94 mm | 206 mm |
| Height | 50 mm | 33 mm |
| Depth | 21 mm | 60 mm |
| Protection rating | IP67 | IP67 |
| Water protection (IPx) | IPx7 | IPx7 |
| Shockproof | — | Yes |
| Display | Backlit display | Backlit display |
| Colours | Black | Yellow |
| Features | ||
| VOX (hands-free) | — | Yes |
| VOX sensitivity levels | — | 9 |
| Channel scan | — | Yes |
| Emergency / SOS alarm | — | Yes |
| Key lock | — | Yes |
| Monitor button | — | Yes |
| PC programmable | Yes | — |
| Connectivity | ||
| Headset / earpiece jack | Yes | — |
| Connectors | USB-C, 3,5mm Klinke | USB-C |
| Bluetooth | Yes | — |
