ARLA/CLUSTER: Quatar dá a conhecer as frequencias do tranponder o seu satelite geoestacionário para radioamadores

[João Costa > CT1FBF]

Page last updated on: Monday, September 22, 2014
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Frequencies of
Es’hail 2 Ham Radio Transponders

The *Qatar Amateur Radio Society* released a leaflet about the
geostationary amateur radio transponders at the IARU Region 1 Conference
taking place September 20-27 in Varna-Albena, Bulgaria

The frequencies quoted are:

Linear transponder
2400.050-2400.300 MHz Uplink
10489.550-10489.800 MHz Downlink

Wideband digital transponder
2401.5-2409.5 MHz Uplink
10491.0-10499.0 MHz Downlink

In the UK the 10475-10500 MHz section of the Amateur Satellite Service
allocation was auctioned by Ofcom for nationwide cell-phone backhaul links.
The winner of the auction was T-Mobile(UK) now part of the phone company
EE. The use of this segment of the band by cell-phone masts may cause
problems to UK amateurs wishing to receive the transponders. See
spreadsheet below.

Gunter Krebs reports on his Space Pages that Es’hailSat has signed a
contract with MELCO to build the Es’hail-2 Geostationary Comsat. Es’hail 2
is a planned communication satellite operated by Es’hailSat, the Qatar
Satellite Company. It will also feature an radio amateur payload.

The new satellite will be positioned at the 26° East hotspot position for
TV broadcasting and significantly adds to the company’s ability to provide
high quality, premium DTH television content across the Middle East and
North Africa. It will feature Ku-band and Ka-band transponders to provide
TV distribution and government services to strategic stakeholders and
commercial customers who value broadcasting and communications
independence,interference resilience, quality of service and wide
geographical coverage. Es’hail 2 is expected to be launched at the end of
2016.

In September 2014, a contract with MELCO was signed to build the satellite
based on the DS-2000 bus.

Es’hail 2 will also provide the first Amateur Radio geostationary
communication capability linking Brazil and India. It will carry two “Phase
4″ Amateur Radio transponders. The payload will consist of a 250 kHz linear
transponder intended for conventional analogue operations in addition to
another transponder which will have an 8 MHz bandwidth. The latter
transponder is intended for experimental digital modulation schemes and DVB
amateur television. The uplinks will be in the 2.400-2.450 GHz and the
downlinks in the 10.450-10.500 GHz amateur satellite service allocations.
Both transponders will have broad beam antennas to provide full coverage
over about third of the earth’s surface. The Qatar Amateur Radio Society
and Qatar Satellite Company are cooperating on the amateur radio project.
AMSAT-DL is providing technical support to the project.

Gunters Space Page
http://space.skyrocket.de/doc_chr/lau2014.htm

2006 Ofcom auction upper segment of 10 GHz Amateur Satellite Service
spectrum
http://stakeholders.ofcom.org.uk/consultations/10ghz/

10 GHz Cell-Phone Links Spectral Mask Spreadsheet
http://tinyurl.com/10GHz-Cell-Phone-Mask

IARU Region 1 Conference
http://iaru.lz-live.com/

AMSAT-UK http://amsat-uk.org/
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