Detailed Answer
Port wireless devices are dense (walkie-talkies, ships, other equipment); band selection: 470MHz (Lideral, clean band + good diffraction) is better than 433MHz (widely used, more interference). 2.4GHz (WiFi/Bluetooth dense) is least suitable. Port remote selects 470MHz+FHSS for best anti-interference. Xingjia port models also support 470MHz.
| Recommended | 470MHz |
| 433MHz | More interference |
| 2.4GHz | Not recommended |
Note:Port band planning must avoid ship communication bands.