FUNcube Data Warehouse URL Change

Dave G4DPZ reports on a change to the URL used by the AMSAT-UK Data Warehouse for the FUNcube amateur radio satellites.

As part of the migration of the data warehouse to the new server, we are now redirecting all dashboard data submissions to: http://data.amsat-uk.org/
(there is no need to change your dashboard settings)
Hence, all information at http://warehouse.funcube.org/ will no longer be updated.

I will be merging the scores at http://data.amsat-uk.org/ranking
(I am at the top of the list because of data migration)

You can search for your site name or order the columns by clicking on the column header.

There have been requests for the existing style of ranking, including age colour, for each satellite. I will be implementing this in the next couple of days.

Hope you like the new site and and feedback will be welcome.

73 Dave, G4DPZ
g4dpz<at>funcube.org.uk

Australian CubeSat to use 76 GHz

The IARU Satellite Coordination Panel has announced the amateur radio frequencies for the Australian 76 GHz CubeSat CUAVA-1 that is expected to launch in July 2019.

CUAVA-1 is a 3U CubeSat and the first CubeSat project of the new ARC Training Centre for CubeSats, Uncrewed Aerial Vehicles (UAVs), and their Applications (CUAVA), whose primary aim is the education and training of people, mostly PhD students, for the space sector.

With significant heritage from the QB50 CubeSat INSPIRE-2, CUAVA-1 is a 3U CubeSat that will link with the international radio amateur community for outreach, training, and increased data downloads, observe the Earth with a novel multi-spectral imager, use a GPS instrument to explore radio occultation and the reception of GPS signals scattered off the Earth as well as provide a backup determination of the CubeSat location, investigate plasma environment and associated space weather with radiation detectors, and explore the performance of a new communications payload.

This mission addresses issues of radio technique interesting to the radio amateur community in the following ways:

1) Global Radio Amateur Participation in Mission and Data Downlinking We will work with radio amateurs and other groups to receive and decode the spacecraft beacon and downlinked data, with subsequent transfer to the internet database (ideally the SatNOGS database).

In detail, the CubeSat will transmit data, especially recent images over the terrestrial footprint, to participating radio amateurs across the globe. This will directly involve radio amateurs in the mission and its success, by greatly increasing the overall amount of downlinked data available and having the images be directly relevant to the receiving people. The receiving station and people would be identified in the database and then acknowledged in any publications resulting. The mission’s success will thus be directly tied to the involvement of the international radio amateur community.

In addition, the mission should provide multiple opportunities for enhanced outreach and training for both the global amateur radio satellite communities and CUAVA.

2) Student and Radio Amateur Participation in the Groundstation We will train students and desiring radio amateurs in the setup and use of a groundstation hosted by the University of Sydney and then have these people operate the groundstation (including control of the satellite and managing the uplink and downlink) and transfer downlinked data into an internet database (ideally the SatNOGS database).

This will involve existing radio clubs in the training, increasing their memberships and leading to new clubs and people familiar with the international radio amateur and satellite communities.

3) Radio Wave Propagation The ionosphere, thermosphere, and lower atmosphere have multiple effects on the propagation and absorption of radio waves and microwaves.

This mission will study the electron number density as a function of position, time of day, and space weather events using the “radio occultation’’ of GPS signals and their associated refraction and attenuation. These data will be published and made available for ionospheric research via a website, and provided to Australia’s Bureau of Meteorology and other space weather organisations worldwide. These data are used to predict maximum and minimum usable frequencies for radio amateurs (and both commercial and government users).

In addition, the GPS signal attenuation and electron number density profiles can be used to extract the amount of water as a function of height and used to predict ordinary weather. This work will also add to knowledge of the orbital environment via the drag forces and decay of satellites depending on the gas and plasma densities.

4) Communication Protocols Modulation techniques that will be investigated for the high-speed communications experiment include QPSK, 16-QAM and CPFM. If successful, this technology for wavelengths below 10 cm will increase the data transfer rates by at least 4 orders of magnitude while also decreasing the sizes of antennas and the associated spacecraft.

This experiment will be relevant to spacecraft-toground and inter-spacecraft communication links and is particularly relevant to radio amateurs, universities, and their students and staff, due to the dramatic increases in data rates and capabilities and associated dramatic reductions in costs.

In addition, the use of multiple frequencies is important for rain (and moisture content) attenuation mitigation techniques, as well as to provide another data stream for weather prediction.

5) Radiation Effects on Electronic Components The Low Earth Orbit (LEO) environment is protected from cosmic rays, solar particles, and particles trapped in the Van Allen Belts by Earth’s magnetic field.

Some portions of LEO do harbour regions of enhanced radiation, in the auroral zones and the South Atlantic Anomaly (SAA) for example. In addition, transient solar and magnetospheric particle energization events, a major component of space weather, can change the radiation level by orders of magnitude. This radiation can adversely affect spacecraft which pass through them.

This mission will directly measure the counts of energetic particles as a function of space weather activity, position, and time of day, thereby characterising the Earth’s radiation environment. It will also study the effects of the radiation on the computer and other onboard electronics. Examples of effects include single event upsets (SEUs), degraded solar cells, and non-functioning electronics such as radio receivers and transmitters.

6) Attitude and Position Determination Reception and analysis of GPS signals by the onboard GPS receiver will determine the spacecraft’s attitude and location as a function of time, thereby determining the satellite’s orbit.

Comparisons with NORAD radar-derived orbits will test the on-board GPS receiver and measure drag and other effects. These orbits are vital for radio amateurs interested in testing and characterising their radio equipment, as well as in downloading the satellite beacon and data signals for transmission via the web to the satellite project and the international community.

Proposing to downlink telemetry on 9k6 GMSK AX25 on UHF and high speed downlinks on 2.4 GHz, 5.6 GHz and 76 GHz. Planning a launch from Japan in July 2019 into a 400 km orbit.

These frequencies have been coordinated by the IARU:
Downlinks: 437.075 MHz, 2404.000 MHz, 5840 MHz and 76.800 GHz
Uplinks: 145.875 MHz, 2404.000 MHz and 5660.000 MHz

More information on CUAVA-1 can be found at
https://www.cuava.com.au/
https://twitter.com/Arc_Cuava

IARU Satellite Frequency Coordination pages http://www.amsat.org.uk/iaru/

Spring issue of OSCAR News now available for download

Oscar News issue 225 March 2019

Oscar News issue 225 March 2019

E-members of AMSAT-UK can now download the Spring 2019 edition of OSCAR News, issue 225, here.

The paper edition should be sent to postal members in 2-3 weeks.

In this issue:
• From the Secretary’s Keyboard
• Editors welcome
• 2019 Meetings & Events Calendar
• Fox-1Cliff/AO-95 Receive Anomaly
• Situation Awareness
• Easy Sats and HTs
• AMSAT SA Dual Band VHF/UHF Antenna
• A Mini Satellite-Antenna Rotator
• SARCNET Portable Antenna Rotator
• ‘Patch’ Feed for S-Band Dish Antennas
• NRC visitors during Science Week
• Astro Pi, Brownies and SSTV
• Goonhilly Earth Station
• A new era for Amateur Radio
• Simple dual band dish feed for Es’hail-2 / QO-100
• Update: New patch feed with horn
• D-STAR One
• OrigamiSat-1
• Spaceflight SSO-A: SmallSat Express Mission
• Nexus
• NEXUS designated as Fuji-OSCAR 99

AMSAT-UK FUNcube Mission Patch

AMSAT-UK FUNcube Mission Patch

Membership of AMSAT-UK is open to anyone who has an interest in amateur radio satellites or space activities, including the International Space Station (ISS).

E-members of AMSAT-UK are able to download OSCAR News as a convenient PDF that can be read on laptops, tablets or smartphones anytime, anyplace, anywhere. Join as an E-member at Electronic (PDF) E-membership

PDF sample copy of “Oscar News” here.

Join AMSAT-UK using PayPal, Debit or Credit card at
http://shop.amsat-uk.org/

E-members can download their copies of OSCAR News here.

LilacSat-1 (LO-90) Commemorative Competition

LilacSat-1 CubeSatThe amateur radio satellite LilacSat-1 (LO-90) is expected to re-enter the Earth’s atmosphere and burn-up later this month. WEI Mingchuan BG2BHC reports a competition is being held to collect telemetry data and make contacts via the satellite.

Update March 14, 2019: For LilacSat-1 telemetry upload and TLE update, please replace http://lilacsat.hit.edu.cn with http://data.lilacsat.online in proxy window.

Contest Period:

March 16, 2019 UTC 00:00 to LilacSat-1 re-entry

Competition Categories:
• Amateur Radio Telemetry Group
• Amateur Radio Communication Group

Competition Goals:

Amateur Radio Telemetry Group:
• Receive and upload as many telemetry packets as possible within a specified time.

Amateur Radio Communication Group:
• Make as many bidirectional QSO as possible and as many grid locator as possible within a specified time.

Scoring strategy:

Amateur Radio Telemetry Group:
• For each successfully uploaded telemetry packet (The score would be count at HIT server), counts 1 point

Amateur Radio Communication Group:
• Exchange information: callsigns and grid locator
• For each bidirectional QSO, counts 1 point. (Dupe QSO with same callsign is not counted as the number of successful QSO)
• For each different number of grids, counts 1 multiplier.

Final results:
• Amateur Radio Telemetry Group: final score = basic point
• Amateur Radio Communication Group: final score = basic point * multiplier

Awards:
• All telemetry data uploader and participants could get a LilacSat-1 QSL card.
• China: top 3 certificates issued.
• World: Top 10 certificates issued.
• For the ham who receive the last downlink signal in the world and successfully uploaded it to the server, they will receive a special gift.

Honor stickers:
• For all those portable stations or receivers set up and operated in the field for this contest, a ” Field ” sticker is affixed to the certificate, and the applicant is required to attach the operating photo as evidence.

Log submissions:

Amateur Radio Telemetry Group:
• After the satellite re-entry, we will advertise the telemetry package list received from March 16, 2019 UTC 00:00 to LilacSat-1 re-entry.
• The participants should send an e-mail with your callsign and the address to locc@lilacsat.online. (no later than April 30, 2019 UTC 00:00)

Amateur Radio Communication Group:
• After the satellite re-entry, the participants should send an e-mail with the communication log and the address to locc@lilacsat.online. (no later than April 30, 2019 UTC 00:00)
• The log is in Cabrillo or Excel XLS format and needs to contain UTC time, send and receive exchange information.
• For Field/Portable radio stations and receivers, the photo must be sent together.

WEI Mingchuan BG2BHC

LilacSat-1 https://amsat-uk.org/satellites/communications/lilacsat-1/

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)

Consultation on Amateur Satellite Service – Your input needed

EO-79 and EO-80 – Image Credit ISIS

Satellite / nanosatellite project managers often wish to use amateur radio frequencies for educational and outreach purposes. The amateur radio community thus offers them a tremendous potential for monitoring their fragile conception. They often ask what kind of amateur radio experience would be interesting onboard a CubeSat or what services they could provide with their communications systems. The answer can be simple: a transponder, but these designers would like to bring novelty and innovation.

In order to provide more factual input, AMSAT-F has decided to launch an English Language Online Survey to find out what you do and would like to do as a satellite activity, what you expect from satellite designers and what you can bring to them. *The synthesis of these results will be presented at the second* AMSAT-F meetings « Rencontre spatiale radioamateur » on March 9 and 10, 2019 in Nanterre (France).

Do not hesitate, give your opinion by completing the questionnaire via the link : https://framaforms.org/amsat-francophone-survey-1548716436

The survey is in English but hosted on French server. Few guideline could be in French.

73
Christophe Mercier
AMSAT-F President

AMSAT-F in Google English https://tinyurl.com/France-AMSAT-F