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Submission + - High-Frequency Traders Use 50-Year-Old Wireless Tech (

jfruh writes: "In the world of high-frequency stock trading, every millisecond is money. That's why many firms are getting information and sending big orders not through modern fiber-optic networks, but using line-of-site microwave repeaters, a technology that's over 50 years old. Because electromagnetic radiation passes more quickly through air than glass, and takes a more direct route, the older technology is seeing something of a renaissance."
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High-Frequency Traders Use 50-Year-Old Wireless Tech

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Be careful when a loop exits to the same place from side and bottom.