For comparison, CB radio is restricted to four Watts, but this can be upped to 12 Watts for Single Side Band (SSB) radios. (A typical CB radio uses two "sideband" signals to carry a voice; SSB ...

Paul Maine] was experimenting with GNU Radio and an RTL-SDR dongle. He created an SSB receiver and, lucky for us, he documented it all in a video you can see below. He walks through how to ...