NetRadio use internet network.
You can use 21 channels and set the output range from 1Km to infinity.
It can be transmitted and received within the output range, and like the actual radio, the channel is commonly used.
Adjust the output range and channel to avoid confusion.
Individual channels are scheduled to be upgrayed later
Of course, public channels are still free.
Let's Use this radio to talk to world people like amateur radio.