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

NEXUS CubeSat designated as Fuji-OSCAR 99

NEXUS PosterOn January 18, 2019, NEXUS was launched on an Epsilon launch vehicle from the JAXA Uchinoura Space Center in Japan.

NEXUS (NExt generation X Unique Satellite) is a satellite developed jointly by Nihon University College of Science and Technology and the Japan Amateur Satellite Association (JAMSAT).

NEXUS demonstrates several new amateur satellite communication technologies, and includes a mode V/u linear transponder.

Telemetry has been received and decoded around the world since the launch, and the transponder was successfully tested on January 26th.

More information may be found at
http://sat.aero.cst.nihon-u.ac.jp/nexus/E0_Top.html

At the request of the Nihon University College of Science and Technology and JAMSAT, AMSAT hereby designates NEXUS as Fuji-OSCAR 99 (FO-99). We congratulate the owners and operators of FO-99, thank them for their contribution to the amateur satellite community, and wish them continued success on this and future projects.

73, Drew Glasbrenner, KO4MA
AMSAT VP Operations / OSCAR Number Administrator

Frequencies:
• 437.075 MHz CW Telemetry
• 435.900 MHz FSK AX.25 / π/4 shift QPSK CCSDS
• SSB/CW transponder
– 145.900-145.930 MHz Uplink
– 435.880-435.910 MHz Downlink

NEXUS Blog http://tinyurl.com/NEXUS-Sat-Blog

JAMSAT in Google English http://tinyurl.com/JAMSAT

IARU Frequency Coordination http://www.amsatuk.me.uk/iaru/finished_detail.php?serialnum=535

UWE-4 CubeSat frequency change request approved

After two weeks in orbit, UWE-4 is in very good shape. The batteries are fully charged, the temperatures of the batteries, the outside panels and the MCU are all lying in the expected range.

The temperatures of the outside Panels of UWE‑4 on the first day after launch

The temperatures of the outside Panels of UWE‑4 on the first day after launch

UWE-4 battery temperatures and State-of-charge on the first day after launch

UWE-4 battery temperatures and State-of-charge on the first day after launch

It can be seen, that the battery temperatures are slightly rising around 8:45 am, when the downlink of this measurement took place.

After the early orbit phase, we are looking forward to some interesting experiments with the attitude determination sensors and the propulsion system.

UWE-4 LogoUnfortunately, our uplink success rate is very poor, which currently prevents these experiments. In the precursor mission UWE-3, it was found that the reason for this is very likely a substantial noise floor at the used frequency range. For this reason, we filed a request for the change of our radio frequency to 435.600 MHz with IARU, which has already been approved.

Today, we will start the procedure to change the frequency of UWE‑4. So if you want to track UWE-4, please adjust your center frequency accordingly. We already started the procedure to change the frequency on UWE‑4, so during the next days it may happen that you can also still receive a signal on our old frequency. Additionally, we have been assigned NORAD ID 43880 in the meantime.

A tool in order to upload the received UWE-4 telemetry directly into our groundstation database is at the moment work in progress and will be shared with you as soon as we have tested it thoroughly. Until then, we would be very grateful, if you’d forward your UWE-4 telemetry files to uwe4@informatik.uni-wuerzburg.de.

Kind regards,

The UWE‑4 Team