Am 08.02.2018 um 23:53 schrieb Henry Spencer:
On Thu, 8 Feb 2018, Uwe Klein wrote:
...imagining comsat builders salivating over how many transponders...
you can do endless numbers of downbeams.
But you can not easily do more than the available bandwidth slots as
uplink. How narrow can you do the receiving uplink antenna beam for
good geograhical separation?
Depends entirely on how big your ground station's transmitting antenna
is, and what uplink frequency you are using (doesn't *have* to have any
particular relation to the downlink frequency). To pick semi-random
numbers, an 8GHz X-band beam from a 10m dish is about 0.2deg wide.