Why is A3 better than TD-638?
- DisplayBacklit display vs Monochrome display
Why is TD-638 better than A3?
TD-638 has no measurable advantages in this pair.
Specifications
Side by side
| Radio & range | ||
| Radio standards | Amateur | VHF, UHF |
| Licence | Amateur licence | Amateur licence |
| Dual band (VHF + UHF) | — | Yes |
| Frequency ranges | 0.5 - 1160 MHz | 136–174 MHz, 220–259 MHz, 300–390 MHz, 400–590 MHz |
| Transmit power | — | 10 W |
| Channels | 999 | — |
| Power & battery | ||
| Battery capacity | 2,500 mAh | 2,500 mAh |
| Battery voltage | 7.4 V | — |
| Power source | Rechargeable pack | — |
| USB-C charging | Yes | — |
| Standby time | 119 h | — |
| Battery level indicator | Yes | — |
| Design & durability | ||
| Protection rating | — | IP67 |
| Water protection (IPx) | — | IPx7 |
| Shockproof | Yes | — |
| Display | Backlit display | Monochrome display |
| Colours | Green | — |
| Features | ||
| VOX (hands-free) | Yes | — |
| Channel scan | — | Yes |
| Flashlight | Yes | — |
| Emergency / SOS alarm | Yes | — |
| Weather channels / alerts | — | Yes |
| FM radio | — | Yes |
| Voice encryption / scrambler | — | Yes |
| GPS | — | Yes |
| Connectivity | ||
| Connectors | USB-C | — |
| Bluetooth | — | Yes |
