01/12/2022

The EASAT-2 and Hades satellites are scheduled to launch on January 13 on a
SpaceX TR-3 flight, AMSAT[1] has reported, citing information provided by
AMSAT-EA President and Mission Manager Felix Paez. Both will carry amateur
radio payloads offering FM voice and data retransmission in FSK or AFSK up to
2,400 bps, and Hades is equipped for slow-scan television (SSTV) and FM voice
beacons with call signs AM5SAT (EASAT-2) and AM6SAT (Hades).

Paez has called on the amateur radio community to listen for both satellites
when they are activated. In the case of EASAT-2, that will be about 30 minutes
after launch (1525 UTC). Hades will be activated remotely a few days after
launch. Share[2] reception reports with AMSAT-EA.

EASAT-2 was designed and built by AMSAT-EA and students from the European
University of Degrees in Aerospace Engineering in Aircraft and in
Telecommunication Systems Engineering. It carries an experimental load of a
basalt material from Lanzarote that is similar to lunar basalts. It's believed
that this material, which was provided by the CSIC research group on meteorites
and planetary geosciences at the Institute of Geosciences, could be used as a
lunar construction material.

During various investigations, the UNESCO world geopark of Lanzarote and the
Chinijo archipelago have served as an as an analog of the moon and Mars, as
well as for training European Space Agency astronauts, Paez said. The purpose
of the basalt experiment is to determine its evolution in space based on
periodic measurements of some of its properties. "Although the experiment is
limited and constitutes the first phase of this type of study, it represents an
important milestone as it is the first of its kind to be introduced on such a
small satellite," Paez explained.

The Hades payload consists of a miniature camera, the output of which will be
transmitted as an audio signal in SSTV mode. The transmissions will be
compatible with Robot36, Robot72, MP73, and MP115. The camera module design was
based on one used successfully in the PSAT-2 satellite[3], which was built by
cadets at the US Naval Academy and by students at the Brno University of
Technology and has been in use since 2019. The system will be controlled
completely from the ground. The SSTV firmware will permit sending live images
as well as images saved in flash memory or encoded in onboard read-only memory
(ROM). It also provides PSK telemetry and imaging advance scheduling with
current status (event counters, temperature, voltage, light conditions, etc.)
and a brief summary, Paez said.

EASAT-2 Frequencies

o 145.875 MHz uplink, FM voice (no subtone) and FSK 50 bps, AFSK, AX.25,
APRS 1,200/2,400 bps

o 436.666 MHz downlink, FM voice, CW, FSK 50 bps, FM voice beacon with call
sign AM5SAT.

HADES Frequencies

o 145.925 MHz uplink, FM voice (no subtone) and FSK 50 bps, AFSK, AX.25,
APRS 1,200/2,400 bps

o 436.888 MHz downlink, FM voice, CW FSK 50 bps, SSTV Robot 36, FM voice
beacon with call sign AM6SAT

More information[4] in English and Spanish on transmissions from both
satellites is available from AMSAT-EA[5].

[1] http://www.amsat.org/
[2] http://data.amsat-ea.org/
[3] http://www.aprs.org/psat2.html
[4] https://www.amsat-ea.org/app/download/12530621/AMSAT+EA+-+EASAT-2+and+HADES+Transmissions+description+v1.05.pdf" rel="nofollow" target="_blank">https://www.amsat-ea.org/app/download/12530621/AMSAT+EA+-+EASAT-2+and+HADES+Transmissions+description+v1.05.pdf
[5] https://www.amsat-ea.org/

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