Broadband Shuffle
Mark J. Dulcey
mark at buttery.org
Fri Dec 21 11:20:46 EST 2001
> How is latency? That's the one complaint I always hear against satellite.
> I know a few people with it, one of whom I believe uses Starband, and he
> can never get better than 500 ms ping times to anything a hop or two away.
> Download speeds are great, though from what I hear, just don't try an ssh
> session unless you're patient. =)
The latency is high, and it's inherent to the medium. After all, you
have a path length (round trip) of at least 90,000 miles (plus whatever
the length of the terrestrial path to the site being pinged is), since a
geostationary satellite is in an orbit about 22,500 miles above the
earth. That means you have a speed of light (186,000 mi/sec) delay of
about half a second.
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