[bayindirh]

Yep, you're right. However, since Walkie-Talkies' power is around that level, I thought it'd be a good example to build upon.

Regardless of the power level, thinking about spectrum and trying not to create harmful interference is important IMHO. I live in a place where listening FM in stereo mode is impossible due to interference and radio transmissions around me. Even Wi-Fi cannot penetrate beyond next room.

We've looked how spectrum looked here with a listen-only SDR. It wasn't pretty. My friends' exact words were "Dude, that's not what I see at home. This is some serious traffic."