Why is RT-817A better than TD-638?
- Transmit power18 W vs 10 W+80%
Why is TD-638 better than RT-817A?
TD-638 has no measurable advantages in this pair.
Specifications
Side by side
| Radio & range | ||
| Radio standards | VHF, UHF | VHF, UHF |
| Licence | Amateur licence | Amateur licence |
| Dual band (VHF + UHF) | Yes | Yes |
| Frequency ranges | 64–108 MHz, 108–136 MHz, 136–174 MHz, 174–400 MHz | 136–174 MHz, 220–259 MHz, 300–390 MHz, 400–590 MHz |
| Transmit power | 18 W | 10 W |
| Channels | 1,024 | — |
| Power & battery | ||
| Battery capacity | — | 2,500 mAh |
| USB-C charging | Yes | — |
| Design & durability | ||
| Protection rating | — | IP67 |
| Water protection (IPx) | — | IPx7 |
| Display | — | Monochrome display |
| Features | ||
| Channel scan | Yes | Yes |
| Emergency / SOS alarm | Yes | — |
| Weather channels / alerts | Yes | Yes |
| FM radio | — | Yes |
| Key lock | Yes | — |
| Voice encryption / scrambler | Yes | Yes |
| GPS | — | Yes |
| Connectivity | ||
| Bluetooth | — | Yes |
