Dimensions
Size comparison
UBZ-M51SERT649P
| UBZ-M51SE | RT649P | Difference | |
|---|---|---|---|
| Height | 79.9 mm | 61 mm | +18.9 mm |
| Width | 47 mm | 202 mm | −155 mm |
| Depth | 22 mm | 38 mm | −16 mm |
| Weight | 110 g | 134 g | −24 g |
Drawn to the same scale from the official dimensions (front and side).
Why is UBZ-M51SE better than RT649P?
- Weight110 g vs 134 g+22%
Why is RT649P better than UBZ-M51SE?
- Maximum range (claimed)2 km vs 3 km+50%
Specifications
Side by side
| Radio & range | ||
| Radio standards | Japan specified low-power (422 MHz) | PMR446 |
| Licence | Licence-free | Licence-free |
| Digital mode (DMR / dPMR) | — | No |
| Frequency ranges | — | 446 MHz |
| Transmit power | — | 0.5 W |
| Channels | — | 16 |
| Maximum range (claimed) | 2 km | 3 km |
| CTCSS / DCS sub-tones | — | Yes |
| Squelch | — | adjustable |
| Call tones | — | 20 |
| Power & battery | ||
| Battery capacity | — | 1,200 mAh |
| Battery voltage | — | 3.6 V |
| Power source | AA / AAA batteries, Rechargeable pack | Rechargeable pack, AA / AAA batteries |
| Runs on AA/AAA batteries too | Yes | Yes |
| USB-C charging | — | No |
| Battery level indicator | — | Yes |
| Design & durability | ||
| Weight | 110 g | 134 g |
| Width | 47 mm | 202 mm |
| Height | 80 mm | 61 mm |
| Depth | 22 mm | 38 mm |
| Protection rating | IP67 | IP67 |
| Water protection (IPx) | IPx7 | IPx7 |
| Floats | — | Yes |
| Shockproof | — | Yes |
| Display | — | Backlit display |
| Colours | — | Green |
| Features | ||
| VOX (hands-free) | Yes | Yes |
| VOX sensitivity levels | — | 3 |
| Channel scan | — | Yes |
| Dual watch | — | Yes |
| Flashlight | — | Yes |
| Emergency / SOS alarm | — | Yes |
| Key lock | — | Yes |
| Roger beep | — | Yes |
| Monitor button | — | Yes |
| Connectivity | ||
| Connectors | — | micro USB |
