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Old 27-03-2013, 22:43   #2
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Join Date: Jan 2003
Location: Marahau, Tasman Bay, New Zealand
Posts: 612
Hi All

Apparently BoM is actually sending real-time earthquake & tsunami information. Thanks to Nigel at RA for the following little bit of info:

The BoM service comes from Melbourne. With 1 kW rms (or less) into an omni-directional & high take-off angle aerial the mechanics of the system discriminate against long haul transmission. The signal is great in Melbourne during the day of course. I missed the early telephony streaming test, but Mode C, 8QAM & 8.64 kb/s gives a robust service for Journaline purposes. It's fascinating to watch pages of information on seismic activity from around the south Pacific and SE Asia updating in real-time. I guess our BoM has access to this because it was "designated" the Australian agency concerned with identifying tsunami threats & disseminating alerts. They didn't think much of this proposal at the time ("earthquakes aren't a meteorological event!") but some money was found for them so they cope.
Here in New Zealand the best I've been able to decode is the title of the Journaline

Cheers, Chris
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