Positive rate From Australia, joined Sep 2001, 2143 posts, RR: 1
Reply 4, posted (13 years 1 month 2 days 6 hours ago) and read 3899 times:
Radar coverage in Australia is only available close to major cities i.e Melbourne/Brisbane/Perth/Sydney/Adelaide/Darwin/Cairns etc. Beyond these areas a/c must rely on procedural methods for traffic seperation i.e waypoint reporting. Most of WA/NT/QLD/SA is outside radar coverage and outside VHF coverage so they use HF.