This manual introduces the features and characteristics of the TW-50 VHF two-way phone, and introduces how to operate and maintain the device.
This manual introduces the GMDSS TW-50 VHF two‑way wireless telephone, describing its features, components, and technical specifications. It covers safe handling, battery usage, and environmental limits for reliable shipboard communication.
Detailed sections explain control functions, channel selection, power settings, optional features, maintenance procedures, and charging instructions. Appendices list channel frequencies and warranty information. This manual is written in Chinese.
| Frequency range | 156.300 – 156.875 MHz |
|---|---|
| Output power (high/low) | 2.0 W / 0.5 W |
| Modulation type | 16KOF3E |
| Operating time (typical) | > 8 hours (10 % TX, 10 % RX, 80 % standby) |
| Operating temperature | -20 °C to +55 °C |
| Waterproof depth | 1 m for ≥ 5 minutes |
| Dimensions (W × D × H) | 56 mm × 37.7 mm × 126.5 mm |
| Weight (with original battery) | 314 g |
No, the manual states that the original battery must not be recharged.
The device can remain submerged at 1 meter depth for at least 5 minutes.
It supports 19 working VHF channels.
The operating temperature range is –20 °C to +55 °C.