Strictly speaking you can use half as much bandwidth by having TX and RX share it, i.e. half-duplex versus full-duplex. It can also somewhat simplify transcieve

Strictly speaking you can use half as much bandwidth by having TX and RX share it, i.e. half-duplex versus full-duplex. It can also somewhat simplify transciever designs in a number of ways. It is also a fairly straightforward model: if you're on the channel and in range of the transmitter or a relay (and maybe have the right preshared key), then you will hear and be able to transmit on that channel. The FirstNet is/should be unrelated, as far as I'm aware. I think it's supposed to be for data applications like image and document sharing.