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High Frequency Traders want to start using High Frequency radio for financial data
(www.radioworld.com)
This is a most excellent place for technology news and articles.
They already use it regularly, it is well understood and this is simply an expansion. HFT firms already use atmospheric bounce to do trades between the US and Europe. They don't need tons of data, it is just a signal or short command to fire a pre-computed/pre-arranged trade generally.