FlyBe

[grasscutter]

Is there a reason for FlyBe flights operated by the Dash 40 not to show on the screen. Will this include the Embraer jet flights as well

[EK01]

Grasscutter,

If an aircraft is not ADSB equiped, it will not show details on the map. Also, an aircraft may be ADSB equiped but the flight crew may choose for whatever reason not to switch on the facility so again it will not show on the map.

[ACW367]

Grasscutter
There are Wiki Pages on Mode S. 

Simple reason is smaller aircraft like the flybe fleet tend to have Mode S which just broadcasts height, callsign etc, but does not broadcast position.  ATC units still need secondary surveillance radar to identify the position of these aircraft.  These aircraft will not display a globe next to them on radarbox aircraft details, and as the box is not a real radar, it cannot plot the position of these.

Mode S ADS-B adds to the message broadcast from the aircraft with the position coordinates.  ADS-B is mostly carried by larger aircraft (above 737 size) although its use is becoming more widespread.  As the Aircraft broadcasts a position, this is what the radarbox uses to plot it on the map.  If radarbox picks up the ADS-B position signals you get the globe next to them on the radarbox details.   

Mode S: aircraft not broadcasting position details = no globe, aircraft will not plot on map, will not be on network

Mode S ADS-B: aircraft is broadcasting position details = globe, aircraft plotting on map, is on network