I'm very much a beginner with radio. I have a simple set of Baofeng BF-888S radios, and in my basic use with those, I got very curious about something: when you push the PTT button on one radio to speak, what is happening in the other radios on the same frequency that lights their LEDs green and they are seemingly unable to transmit until the one radio stops transmitting?
PDF manual, 7 pages
I'm imagining that the single radio starts transmitting at a certain threshold, even before the user starts speaking, and the other radios are configured to go into this receive/prevent-transmit mode when they pick up signals beyond a threshold? But I have no idea, and whatever keywords I'm using to search aren't revealing the answer.