Another early shortwave OTH system was built in Australia in the early 1960s. This consisted of several antennas positioned four wavelengths apart, allowing the system to use phase-shift beamforming to steer the direction of sensitivity and adjust it to cover Singapore, Calcutta, and the UK. This system consumed 25 miles (40 km) of electrical cable in the antenna array.[7]
Note that the UK is approximately antipodal to Australia
Australia’s current OTH radars covers South East Asia, use half the transmit power of US OTH radar, and have longer range
Australia has been running over the horizon radar for decades, I think Australia’s role in this is providing expertise
From over-the-horizon radar on Wikipedia
Note that the UK is approximately antipodal to Australia
Australia’s current OTH radars covers South East Asia, use half the transmit power of US OTH radar, and have longer range
Ok that makes sense. Thanks for the information.
I just found this: https://www.abc.net.au/news/2025-03-19/canada-snuck-past-trump-buy-jorn-defence-radar/105069292
TLDR: Australia wanted to sell our Jindalee over-the-horizon radar (JORN) to the US, then Trump happened, so now we’re selling it to Canada