Es’hail-2
As you can learn from various unofficial sources on the internet, the launch of Es’hail-2 with the two AMSAT transponders is now imminent.
Last test before the launch
A few days before the launch, a so-called “static fire” test of the launcher’s engines takes place. The rocket is brought to the launch pad, but without the satellite payload, and refueled. Then after the static fire test the rocket is de-fueled again and brought back into the hangar. Only now Es’hail-2 is mounted on top of the rocket. Usually on the same day the final launch date is officially announced by SpaceX
Source:AMSAT DL
Narrowband Linear transponder
2400.050 - 2400.300 MHz Uplink
10489.550 - 10489.800 MHz Downlink
Wideband digital transponder
2401.500 - 2409.500 MHz Uplink
10491.000 - 10499.000 MHz Downlink
Equipment requirements:
X-Band 10 GHz Downlink:
– 89 cm dishes in rainy areas at EOC like Brazil or Thailand
– 60 cm around coverage peak
– 75 cm dishes at peak -2dB
– NB: linear vertical polarisation
– WB: linear horizontal polarisation
S-Band 2.4 GHz NB-Uplink:
– narrow band modes like SSB, CW
– 5W nominal Uplink power (22.5 dBi antenna gain, 75cm dish)
– RHCP polarisation
S-Band 2.4 GHz WB-Uplink (DATV):
– wide band modes, DVB-S2
– peak EIRP of 53 dBW (2.4m dish and 100W) required
– RHCP polarisation
AMSAT-DL Phase 4A Es’hail-2 geostationary satellite amateur radio transponder slides
https://www.amsat-dl.org/images/stories/satellites/Eshail-2/EsHail2_AMSAT-DL_July2018.pdf
AMSAT-DL Phase 4A leaflet https://www.amsat-dl.org/images/stories/satellites/Eshail-2/P4A_Leaflet.pdf
Presentation on Es’hail-2 by Peter Guelzow DB2OS, President of AMSAT-DL, at the 2013 AMSAT-UK Colloquium http://www.batc.tv/streams/amsat1306
Es’hailSat announces tender process for Es’hail-2
http://www.qatarchronicle.com/science-and-technolgy/49977/eshailsat-announces-tender-process-for-eshail-2/
Es’hailSat – the Qatar Satellite Company https://www.facebook.com/EshailSat
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