An interesting development in the world of ADS-B, NASA has started flying an MQ-9 fully fitted with ADS-B which is designed to test if that tech can enable it to operate in GAT airspace.
http://www.airtrafficmanagement.net/2012/03/unmanned-adsb-first-for-nasa/
http://www.nasa.gov/centers/dryden/news/FactSheets/FS-097-DFRC.html
Will be interesting if it starts appearing on the network.
Hmmm...
I wonder if ICAO are going to give codes to UAVs. If not, the database updaters are going to have to work something out so that I can give silhouettes the right code ;-)
Rod
If ICAO give permission for UAVs to operate in ICAO GAT airspace, the UAV will need to flight plan as per manned aircraft. Therefore I presume a code will be issued as it is a required field on the flightplan.