venerdì 15 febbraio 2019

Amsat Es’hail 2 - satellite geostazionario 2.4 - 10 GHz



Phase-4A Geostationary Transponders


Es'hail-2 coverage from 26 degrees EastEs’hail 2 is a geostationary satellite which will carry two amateur radio transponders.




https://amsat-uk.org/2016/06/24/phase-4a-geostationary-transponders/

The launch of the Es’Hail-2 satellite into a geostationary orbit is currently planned for the 3rd quarter of 2017. The coverage area of the Narrowband (NB) and Wideband (WB) transponders should extend from Brazil to Thailand.
The two “Phase 4” amateur radio non-inverting transponders will operate in the 2400 MHz and 10450 MHz bands. A 250 kHz bandwidth linear transponder is 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 Right Hand Circular Polarization
10489.550 - 10489.800 MHz Downlink Vertical Polarization

Wideband digital transponder
 2401.500 -  2409.500 MHz Uplink Right Hand Circular Polarization
10491.000 - 10499.000 MHz Downlink Horizontal Polarization
Download the Eshail-2 P4-A Amateur Radio Leaflet 2016-06-24

Setup for SSB communications:
RX Antenna 60-90 cm SAT-TV dish Receiver LNB with power injector and DVB-T dongle + SDR software (for example SDR#) , OR 3 cm LNA with downconverter to 70cm
Transmitter 10W PEP in 60-90 cm dish plus upconverter from 144 MHz

Setup for DATV (DVB-S2) communications:
RX Antenna 60-90 cm SAT-TV dish Receiver modified LNB with standard satellite receiver box (DVB-S2) ,OR modified LNB with PCI DVB-S2 cards for PC use
Transmitter 100W PEP in 2.4m dish plus DVB-S2 modulator 
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