The node's own live stream. It is a few seconds behind the radio, and silence between transmissions is normal.
Choose what this node's radio tunes to. Works with or without the DRB server. If the server assigns a system later, it takes over.
DMR isn't supported by this node's decoder yet.
Only matters with more than one SDR plugged in. OP25 always gets one; every other SDR runs the next enabled service, top first.