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  Space Symposium 2018






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 you did not attend the space symposium, you are free to download the papers but we request you to make a donation to AMSAT SA.  Our bank is ABSA, Branch code 632 005 Account number 40 8982 6281. Please send an EFT advice to so we can acknowledge receipt. Thnak you for your support.

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 geostationary satellite. 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.

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