Scanning Display
Under "Scan List" and "Scan List", the "Text" column determines what shows when in scan. "OFF" shows the current channel(s), "ON" shows the name of the Scan Mode (default).
I also like to disable (SCAN MODE OFF) unused lists.
And yes, the hanger button needs to be grounded to scan. Newer models allow this to be selected as a software switch, but on the F100-series you either need to hang up the mic, or solder a wire internally in the microphone between the button and ground.