Archivo del Autor: yoda

2.5 milliwatt OPERA signal via Es’hail-2 geostationary satellite

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2.5 milliwatt OPERA signal via Es’hail-2 geostationary satellite

Es'hail-2 Qatar-OSCAR-100Markus Vester DF6NM successfully used the digital mode OPERA to send a 2.5 milliwatt signal on 2.4 GHz through the amateur radio transponder on the Es’hail-2 / QO-100 geostationary satellite.

Graham G0NBD writes about the contact on Digital Radio Groupsio.

Markus started using 250 milliwatts on 2.4 GHz into a 60 cm dish pointing at Es’hail-2. The downlink signal was received via the AMSAT-UK and BATC 10 GHz WebSDR at Goonhilly in Cornwall by Peter Knol PA1SDB.

Markus then reduced power to just 2.5 milliwatts and the signal was still receiveable.

See Digital Radio Groupsio post at
https://digitalradio.groups.io/g/main/message/50861

OPERA was developed by Jose EA5HVK and can be downloaded from
https://rosmodem.wordpress.com/

Es’hail-2 / Qatar OSCAR-100 web receiver now live
https://amsat-uk.org/2019/02/10/qatar-oscar-100-web-receiver-now-live/

DF6NM to PA1SDB using OPERA via Es'hail-2 on March 3, 2019DF6NM to PA1SDB using OPERA via Es’hail-2 on March 3, 2019. Note Microwavers spots site doesn’t display satellite frequencies correctly

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m5aka

AMSAT-UK

UWE-4: First NanoFEEP thruster ignition

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UWE-4: First NanoFEEP thruster ignition

UWE-4 LogoAt 09:59:00 UT on February 26, one of the UWE-4 CubeSat NanoFEEP thrusters, developed by TU Dresden and Morpheus Space, was successfully ignited.

This is the first time an electric propulsion system has been activated on board of a 1U CubeSat in space.

A voltage of more than 5kV has been produced by the power processing unit causing a thruster emitter current of 40µA. For this very first firing a duration of 30s was intended.

Primary mission: accomplished!

Within the next days experiments with the propulsion system for a characterization of the thrusters will be conducted.

Thank you very much for your support! Especially the directly injected messages into our server using the decoding tool by Mike DK3WN help us a lot with our daily operations!

Kind regards,
The UWE‑4 Team

UWE-4 435.600 MHz
http://www7.informatik.uni-wuerzburg.de/forschung/space-exploration/projects/uwe-4/

UWE-4 Thruster Firing Voltage (kV)UWE-4 Thruster Firing Voltage (kV)

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m5aka

AMSAT-UK