1 Attachment(s)
Es'HailSAT-2 26°E Primul satelit geostationar pentru radioamatori
Satelitul geostationar ES'hailsat-2 are la ,,bord,, si transponderul pentru radioamator, lansat de la Centrul Spatial Kennedy in data de 15 Noiembrie 2018 ora 20:46 GMT iar acum este pe orbita geostationara 25.5° Est. Acesta este primul transponder pentru amatori pus in orbita geostationara si se preconizeaza ca arie de acoperire din Brazilia pana in Tailanda .
Attachment 286
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:
Es'Hail-2 Geostationary P4-A Transponder Frequencies
Es’Hail-2 Geostationary P4-A Transponder Frequencies
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
Curand Es’hail-2 WebSDR https://eshail.batc.org.uk/
Sursa informatiei : https://amsat-uk.org/satellites/geos...nous/eshail-2/
Colegii radioamatori din rusia si nu numai dezbat pe forumul de ultrascurte http://forum.vhfdx.ru/sputniki/eshailsat-2/ de ceva vreme variante pentru abrodarea receptiei in 10ghz prin modificarea LNB-urilor pentru satelit .
Pare greu dar .....este abordabil
