The AMSAT SA Space
Symposium was held on 19 May 2018 at the Innovation Hub in Pretoria.
As papers become
available for publication you can download them from this page. If
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Es’Hail-2: An Updated Look at
Amateur Radio’s 1st Geostationary Satellite
Author: Hannes Coetzee, ZS6BZP, B.Eng.
Electronics (Pretoria), M.Sc. Space Physics (Rhodes)
If all goes according
to plan the Qatar Satellite Company’s second satellite, Es’Hail-2,
will be placed in a geostationary orbit by a Space-X Falcon-9 rocket
within the next year. It will carry an AMSAT linear transponder as a
secondary payload, giving amateurs for the first time access to a
The transponder uplink
frequency will be 2.4 GHz, downlink frequency 10.489 GHz and the
bandwidth 250 kHz.
The operational parameters of
the transponder are analysed and possible technical solutions for
the up- and downlink requirements are presented. Emphasis is placed
on low cost equipment in the best Ham tradition.