https://www.news.com.au/heraldsun/story/0,21985,24508171-662,00.html Matthew Schulz October 17, 2008 12:00am POWERFUL signals from a secretive naval base are being probed as a possible cause of a Qantas jet plunge last week. Air safety investigators say they will look into claims that signals from the base, used to communicate with US and Australian ships […]