Dimensions
Size comparison
DJ-P421LAHD-1
| DJ-P421LA | HD-1 | Difference | |
|---|---|---|---|
| Height | 92 mm | 29 mm | +63 mm |
| Width | 54 mm | 62 mm | −8 mm |
| Depth | 18.2 mm | 180 mm | −161.8 mm |
| Weight | 104 g | 210 g | −106 g |
Drawn to the same scale from the official dimensions (front and side).
Why is DJ-P421LA better than HD-1?
- Weight104 g vs 210 g2×
Why is HD-1 better than DJ-P421LA?
HD-1 has no measurable advantages in this pair.
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) | 0.5 km | — |
| CTCSS / DCS sub-tones | — | Yes |
| Squelch | — | adjustable |
| Power & battery | ||
| Battery capacity | — | 2,400 mAh |
| Power source | AA / AAA batteries, Rechargeable pack | Rechargeable pack |
| Runs on AA/AAA batteries too | Yes | — |
| USB-C charging | — | Yes |
| Battery level indicator | — | Yes |
| Design & durability | ||
| Weight | 104 g | 210 g |
| Width | 54 mm | 62 mm |
| Height | 92 mm | 29 mm |
| Depth | 18 mm | 180 mm |
| Protection rating | IP67 | IP67 |
| Water protection (IPx) | IPx7 | IPx7 |
| Display | — | Backlit display |
| Colours | — | Yellow |
| Features | ||
| VOX (hands-free) | Yes | Yes |
| Channel scan | — | Yes |
| Emergency / SOS alarm | — | Yes |
| Key lock | — | Yes |
| Roger beep | — | Yes |
| Monitor button | — | Yes |
| Voice encryption / scrambler | Yes | — |
| Connectivity | ||
| Headset / earpiece jack | — | Yes |
| Connectors | — | 2,5 und 3,5 mm, USB-C |
