Es’hail 2 Geo-Satellite
Qatar’s Es’hail-2 Satellite 2019
Es'hail-2 - Successfully launched into orbit (15. Nov. 2018)
The eagerly awaited start of the Es'hail-2 took place on 15/11/2018 at 20:46 as planned and successfully. This is the beginning of a new era in satellite broadcasting for us radio amateurs.
Qatar’s Es’hail-2 satellite will provide the first amateur radio geostationary communications that could link amateurs from Brazil to Thailand. The satellite is expected to be positioned at 25.5 degrees East. A launch is planned for the 4th quarter of 2019.
Es'hail-2 coverage areaEs’hail-2 will carry two “Phase 4” amateur radio transponders operating in the 2400 MHz and 10450 MHz bands. A 250 kHz bandwidth linear transponder intended for conventional analogue operations and an 8 MHz bandwidth transponder for experimental digital modulation schemes and DVB amateur television.
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
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
Oscar 10 Satellite Operation 1984 - 1985
These are some impressions from my OSCAR 10 SAT-Operation between 1984-1985
I used the ICOM IC-211 E for 2m (10 Watt) for the Downlink and the KENWOOD TR-9500 70cm (10 Watts) with a Home-Made Amplifier (50W) for the Uplink. I used the 14-element Yagi antenna from Tonna for (2m) and the 23-element Yagi for (70cm).
A self developed Commodore C64 application was managing my home built automatic SAT Antenna-Moving solution which was able to follow the OSCAR 10 at any time. A home made Pre-Amp controller unit for 20m and 70cm was managing the RX/TX flow for SAT operation.
OSCAR 10 Satellite QSO Samples - Recorded 1986 by HB9RYZ
Uplink 70cm (438 MHz) and Downlink 2m (144 MHz)
Some of the OSCAR 10 Satellite QSL Cards between 1984 and 1985