ARLA/CLUSTER: LimeSDR apresenta mini estação terrestre para seguimento de satélites de amador

[João Costa > CT1FBF]

LimeSDR mini satellite ground station

*Daniel Estévez EA4GPZ / M0HXM* has written about using a LimeSDR Mini as
the basis for a ground-station for the amateur radio transponders on the
geostationary satellite Es’hail-2 / QO-100

This satellite includes two linear (also called “bent-pipe�) transponders,
one of which is 250 kHz wide and is intended for narrowband modes, such as
single-sideband analogue voice, text-based digital modes, and telegraphy.
The other is 8 MHz wide and is intended for DVB-S2 and other wideband
digital modulations and experiments. The satellite covers one third of the
world’s surface (from Brazil to Thailand) and represents the first ever
amateur radio payload in geostationary orbit. It also provides an
incredible platform for experimenting with different communication schemes.

The downlink of the satellite is on the 10 GHz band, so an inexpensive
satellite TV LNB can be used to receive and down-convert the signal to an
intermediate frequency of around 700 MHz, where it can be easily processed
by SDR or conventional radio receivers. The uplink to the satellite is on
the 2.4 GHz band. Many people are using an upconverter to translate a
signal from around 430 MHz to 2.4 GHz. However, using a LimeSDR it’s
possible to generate the 2.4 GHz signal directly.

Read the article at
https://www.crowdsupply.com/lime-micro/limesdr-mini/updates/field-report-limesdr-mini-satellite-ground-station

Es'hail-2 / QO-100 information
https://amsat-uk.org/satellites/geo/eshail-2/
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