Yes - as you and I have discussed, it involves using ultrasensitive magnetic field detectors, like high-Q tuned circuits with SQUIDs - very narrow-band.
That scientist I mentioned last year is back in Australia and coincidentally, is coming to dinner tonight. He's the one who worked out how to make large arrays of SQUIDs (like 10,000) in order to get broad-band detection. That was hard because previous yields were around 30% for one.
Anything you'd like me to ask him? He probably can't answer anyhow.
Clifford Heath.