[AusNOG] NBNCo Tails to Plane Seats?

[Karl Auer]

On Sun, 2015-05-10 at 11:09 +0000, Mark ZZZ Smith wrote:
> This report says satellite latency is around 600ms.
> https://www.fcc.gov/measuring-broadband-america/2013/February#Findings

A geostationary satellite orbits at about 35,000km. That's a one way
trip from any terrestrial point to any other of at least 70Mm (Earth to
satellite, satellite back to Earth). A round trip is thus at least
140Mm. The speed of light is around 300Mm/s. Which means a latency of
around 0.45s (450ms) as your *best possible case*. You'll never see that
though - you have additional flight time between you and the base
station and between the other end and their base station, plus
processing time in routers and so on.

Regards, K.

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Karl Auer (kauer at biplane.com.au)
http://www.biplane.com.au/kauer
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