27/09 yes Nexrad is not provided by the faa but it is provided by the US govt. ADSB. 978 is another band and in the US transponders are being sold using both 1090 and 978 in and out. I realise money is the driver behind Aus installing half a system. I think its short sighted policy. ADSB will be efficient if most or all of the aircraft install the transponders.If you give GA a service with traffic and weather then more will buy the units. Pilots in VMC will have more info than in the past and make better informed decisions. How many GA accidens have been caused by VFR pilots wandering into Imc.