Direct-Satellite Internet Makes Gains - InformationWeek

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Government // Mobile & Wireless
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11/3/2014
02:06 PM
John Barnes
John Barnes
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Direct-Satellite Internet Makes Gains

Data networks in the sky are becoming more practical and cost effective, even against cable and DSL networks, with more breakthroughs just over the horizon.
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The ground level problem
In 1996, the first direct-satellite Internet service was introduced as DirecPC (now HughesNet). It was allocated only a few slots in the high end of the L and the low end of the Ku microwave bands, i.e. a cluster of frequencies around 12 GHz, which is far below the 20 GHz to 30 GHz of today's Ka-band satellite transmission. Low frequency physically implies three problems at once: wide beams, low bit rates, and big antennae.
All the same, it offered a then-awesome 400 kbps (compared to the 56 kbps of the dial-up services most people and businesses still had).

The ground level problem
In 1996, the first direct-satellite Internet service was introduced as DirecPC (now HughesNet). It was allocated only a few slots in the high end of the L and the low end of the Ku microwave bands, i.e. a cluster of frequencies around 12 GHz, which is far below the 20 GHz to 30 GHz of today's Ka-band satellite transmission. Low frequency physically implies three problems at once: wide beams, low bit rates, and big antennae.

All the same, it offered a then-awesome 400 kbps (compared to the 56 kbps of the dial-up services most people and businesses still had).

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