Ham radio APRS payload to launch April 1

PSLV-C45 orbital platform PS4

PSLV-C45 orbital platform PS4

An APRS payload from AMSAT INDIA will be flown on the PSLV-C45 mission expected to launch on April 1, 2019 at 03:57 GMT.

On the AMSAT Bulletin Board Nitin VU3TYG writes:

The payload will be powered on approximately over Sweden, Norway, Denmark, Finland, Poland and Moscow. We request stations at these locations to report the first signals on 145.825 MHz from the payload.

We also request the Amateur Radio fraternity worldwide to use the payload and Satgates to feed the traffic. More details about this unique project as well as the prelaunch TLE are available at

Nitin [VU3TYG] Secretary, AMSAT INDIA

It is understood the PSLV-C45 mission will deploy 29 satellites. The 4th stage of the rocket (PS4) will become an orbital platform in a 485 km orbit hosting three payloads:
• Automatic Packet Reporting System (APRS) digipeater from AMSAT INDIA
• Automatic Identification System (AIS) from ISRO
• Advanced Retarding Potential Analyzer for Ionospheric Studies (ARIS) from the Indian Institute of Space Science and Technology (IIST).

ISS SSTV transmissions April 1-2

ISS SSTV MAI-75 image 9/12 received by Chertsey Radio Club on Baofeng handheld

ISS SSTV MAI-75 image 9/12 received by Chertsey Radio Club on Baofeng handheld

Dmitry R4UAB reports cosmonauts on the International Space Station will again be transmitting SSTV images, April 1-2, on 145.800 MHz FM as part of the Inter-MAI-75 experiment.

A Google translation reads:

“Inter-MAI-75” (Education and promotion of space research) – an experiment aimed at combining the efforts of educational universities and radio amateurs in Russia and the United States to develop technology and technical tools that enable students to communicate and collaborate with astronauts and astronauts in the study and development of the management process ISS, as well as to work out various methods of transmission and various types of transmitted information (text, voice and telemetry information, black and white and color photos and video from blasts, etc.), obtained as a result of scientific and educational experiments through the use of amateur radio communications onboard the ISS.

SSTV images will be transmitted at a frequency of 145.800 MHz using a Kenwood TM-D710 transceiver. They are expected to use the PD-120 SSTV format.

• Monday, April 1, 2019 from about 1400 to about 1900 GMT
• Tuesday, April 2, 2019 from about 1400 to about 1900 GMT

Listen to the ISS when it is over Russia with the R4UAB WebSDR http://websdr.r4uab.ru/

Source R4UAB https://r4uab.ru/2019/03/25/s-borta-mks-1-i-2-aprelya-2019-goda-budut-peredavat-izobrazheniya-sstv-v-ramkah-eksperimenta-inter-mai-75/

ISS SSTV https://amsat-uk.org/beginners/iss-sstv/

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

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

Ham radio geostationary satellite talks at Martlesham

BT Adastral Park - credit BT

BT Adastral Park – credit BT

This year’s premier Amateur Radio Microwave Event will take place at BT Adastral Park, Martlesham, Suffolk on April 13-14, Everyone is welcome to attend and entry is free but you must pre-register.

The talks are being held on the Sunday, April 14, and they include:
• Equipment for the Es’Hail-2 / QO-100 narrowband transponder by David Bowman G0MRF
• Es’Hail-2 / QO-100 DATV wideband transponder by Noel Matthews G8GTZ
• Building your first Transceiver with GNU Radio by Heather Lomond M0HMO
• From Death Rays to Dinner: A Brief History of Microwave Engineering by William Eustace M0WJE

Entry is Free but you must Register in advance due to BT’s site access policy. Full details and booking at http://mmrt.homedns.org/

UK Microwave Group

Groups IO UKMicrowaves https://groups.io/g/UKMicrowaves

ESEO satellite commissioning starts

Artist impression of ESEO flying over Europe - credit ESA

Artist impression of ESEO flying over Europe – credit ESA

On Monday, December 3, 2018, the 50 kg ESA Education Office satellite ESEO was launched by Space-X on the Spaceflight SSO-A SmallSat Express mission.

UPDATE April 12: The 1200 bps BPSK telemetry beacon on 145.895 MHz was activated at 1040 UT on Friday, April 12, 2019. See ESEO Real-Time Data in the AMSAT-UK Data Warehouse at http://data.amsat-uk.org/ui/eseo

Download the ESEO (FUNcube-4) Dashboard App from

Following the launch from Space Launch Complex 4E (SLC-4E) at Vandenberg Air Force Base, ESEO separated from the launch vehicle and automatically activated the periodic transmission of its telemetry beacon. However, by the time out of a predefined period, having not received commands from the ground station, the spacecraft automatically entered into safe mode.

Some initial communications issues were experienced by ESEO in receiving commands from the ground stations in Forli’ (Italy) and Vigo (Spain), but they were resolved when the ESEO team of the Observatory of Tartu offered the possibility to use a ground station in Estonia. This is capable of transmitting with higher power, for a temporary contingent use. The Estonian ground station has been configured to be operated remotely by the ESEO MCC team, which involves students of the University of Bologna.

ESEO then started executing the commands transmitted from ground.

ESEO has now completed the LEOPS (Launch and Early OPerationS) phase of its mission, reaching the platform nominal mode and has begun the process of commissioning the whole satellite: firstly the platform functions, with the payloads functions following.

As part of this commissioning process, but subject to the successful completion of other preparatory tasks of the platform subsystems commissioning, it is anticipated that initial testing of the AMSAT communications payload will be carried out within the next few weeks.

AMSAT-UK will endeavour to provide some advance notice of these tests being undertaken, but the first step will be activation of the 1200 bps BPSK telemetry beacon on 145.895 MHz. The telemetry format matches previous FUNcube missions and data from this beacon will be forwarded to the FUNcube Data Warehouse using any of the FUNcube dashboards. However, to see the decoded values and graphical displays, please download the dedicated ESEO mission dashboard which is available at

The payload has, additionally, a high speed, 4800 bps BPSK data format downlink and also a Mode L/V FM transponder both of which will be tested.

ESEO Real-Time Data in the AMSAT-UK Data Warehouse at http://data.amsat-uk.org/ui/eseo

Further information about ESEO can be seen at

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

• 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/