Tomsk-TPU-120 CubeSat to deploy during EVA

Tomsk-TPU-120 CubeSat - Credit Tomsk Polytechnic University

Tomsk-TPU-120 CubeSat – Credit Tomsk Polytechnic University

The amateur radio CubeSat Tomsk-TPU-120 may be deployed during a Russian spacewalk (EVA) in July 2017.

The satellite was developed by students at the Tomsk Polytechnic University to test new space materials technology and is the world’s first space vehicle with a 3D-printed structure. It was launched from Baikonur in Kazakhstan to the ISS on March 31, 2016 in a Progress-MS-2 cargo vessel.

It will be deployed by hand during a Russian spacewalk, which is why unlike other CubeSats this one has a handle. The call sign of the satellite is RS4S.

According to Alexey Yakovlev, head of the Tomsk Polytechnic University’s Institute of High Technologies, the 3D printed satellite is something of a landmark for additive manufacturing, being the first example of a fully 3D printed satellite: “The Tomsk-TPU-120 is the first such project in the world, in which the entire casing of a satellite is fully 3D printed using dynamic modeling,” Yakovlev recently told Sputnik. “The combination of these technologies can significantly reduce the development time and the number of full-scale tests, find new engineering solutions, and reduce the project’s cost.”

In May 2016 the Tomsk Polytechnic University celebrated its 120th anniversary. As part of the celebrations on May 10/11 the Tomsk-TPU-120 was activated in the ISS and transmitted a greeting to Earth inhabitants, recorded by students of the university in 10 languages: Russian, English, German, French, Chinese, Arabic, Tatar, Indian, Kazakh and Portuguese.

The greeting message was transmitted once a minute on 437.025 MHz FM. A Kenwood transceiver on the ISS provided a cross-band relay, re-transmitting the signal on 145.800 MHz FM.

Read the 3ders article at

Sputnik News – Unique 3D-Printed Siberian Satellite to Orbit Earth

ISS Calendar

Tomsk-TPU-120 CubeSat Video

BY70-1 FM transponder satellite

BY70-1 CubeSat

BY70-1 CubeSat

A CZ-2D rocket carrying the amateur radio FM transponder satellite BY70-1 was launched on Wednesday, December 28 at 03:23 UT.

Update: Paul Stoetzer N8HM reports working Wyatt Dirks AC0RA through the FM transponder during the 1709 UT pass on December 28. Paul says “Uplink requires precise frequency adjustment and there’s a delay on the downlink, but the signal is strong”. A recording of the transponder can be heard at

The launch from the Taiyuan Space Launch Center was planned for December 26 but postponed due to adverse weather. It had been planned it would go into a 530 km circular Sun-Synchronous Orbit (SSO) but instead the orbit appears to be 524 x 212 km which will give an orbital lifetime of just one or two months.

BY70-1 is a 2U CubeSat project for school education and amateur radio. It features 3-axis stabilization and deployable solar panels. In addition to the FM transponder BY70-1 has a camera and it is planned to download images and telemetry via a 9600 bps BPSK downlink.

The IARU amateur satellite frequency coordination pages list these frequencies:
• 145.920 MHz uplink
• 436.200 MHz downlink
A 67 Hz CTCSS (PL Tone) is required.

On the AMSAT Bulletin Board Mac AE5PH has provided a list of the channel settings he uses:

 Chan        RX          TX     TX PL Tone
BY70-1    436.2100    145.9175    67 Hz
BY70-2    436.2075    145.9175    67 Hz
BY70-3    436.2050    145.9175    67 Hz
BY70-4    436.2025    145.9200    67 Hz
BY70-5    436.2000    145.9200    67 Hz
BY70-6    436.1975    145.9200    67 Hz
BY70-7    436.1950    145.9225    67 Hz
BY70-8    436.1925    145.9225    67 Hz
BY70-9    436.1900    145.9225    67 Hz

His rig supports 2.5 kHz channel spacing, for 5 kHz step rigs just omit the intermediate channels.
Note: If your rig has selectable FM filters the wider filter should give better results.

For the SatPC32 Doppler.sqf file Henk PA3GUO suggests: BY70-1,436200,145920,FM,FM,NOR,0,0,FM

BY70-1 has been added to the satellite pass predictor at

See the article by Daniel Estévez EA4GPZ / M0HXM – GNU Radio decoder for camera images from BY70-1 satellite

BY70-1 links

Follow Mingchuan Wei BG2BHC

Keplerian Two Line Elements (TLEs) ‘Keps’ for new satellites launched in past 30 days. It is believed BY70-1 may be object 41909, 2016-083C

Adding new satellites to SatPC32, Gpredict and Nova

Winter issue of OSCAR News now available

OSCAR News 216 December 2016 Front CoverE-members of AMSAT-UK can now download the Winter edition of OSCAR News here.

In this edition “FUNcube Update” has the latest information on the new Jordanian satellite JY1Sat which will carry a 435/145 MHz amateur radio linear transponder and will transmit images.

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

In this issue:
• From the Secretary
• 2017 Meetings & Events calendar
• The AMSAT-UK Shop
• A 25MHz reference for ADF4350/4351 based synthesisers
• ISS Packet Digipeater on 437.550 MHz
• Change in AMSAT-UK Membership ‘Rules’
• Orbital Debris
• UK Radio Amateur Receives Sir Arthur Clarke Award
• ARISS International Face to Face Meeting
• AMSAT-NA Space Symposium at Sea
• EO79 FUNcube transponder commences regular operation
• Spacecraft currently active with FM or linear transponders
• HamTV update
• Robin Haighton, VE3FRH – Silent Key
• SatCamp
• The “handover” of the ESEO AMSAT payload Engineering Model
• FUNcube (and other projects) update Dec 2016
• Satellite Orbits

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.

Pratham student satellite returns to life

Pratham satellite in Mumbai Mirror

Pratham satellite in Mumbai Mirror

The Mumbai Mirror reports on the return to life of the Pratham satellite launched on September 26, 2016. Pratham carries an amateur radio payload and was built by students at the Indian Institute of Technology Bombay (IIT-B).

The newspaper says:

After one month of radio silence, the ground station at the Indian Institute of Technology, Bombay, received a signal from Pratham satellite on the morning of December 17, suggesting that it was still alive and kicking. Pratham is the first satellite to be sent into space by an IIT.

The satellite had received signals in the first few weeks after its launch on September 26, this year, but had gone quiet in November, due to technical difficulties, causing team members to worry if it was still operational.

“The fact that we received a signal on Saturday suggests that the satellite has now stabilized and is back to collecting data,” said Ratnesh Mishra, project manager of Pratham. While Mishra says that the incoming signal means that the satellite is functional, data transfer is yet to take place.

Read the full article at

Pratham info

UBSEDS21 Balloon To Test 145.825 MHz APRS

UBSEDS18 Solar Powered Balloon

UBSEDS18 Solar Powered Balloon

On Sunday, December 11 Bristol SEDS students launched UBSEDS21 a 434 MHz Contestia and 144/145 MHz APRS solar powered balloon that may travel around the world.

Update Dec 23: UBSEDS21 over Spain having completed its first circumnavigation of the globe see track.

Update Dec 20: APRS creator Bob Bruninga WB4APR reports receiving @bristolseds UBSEDS21 balloon AD6AM-13 145.825 MHz Dec 20 1420 EST – Bob was Mobile in Annapolis MD.

Update Dec 18: UBSEDS21 has crossed the Pacific and reached Canada.

The UBSEDS21 balloon was built from 50 micron thick PA-EVOH-PE multilayer film and is about 1.9 meters in diameter, the payload weight was 34.2 grams.

After launch on December 11, 2016 the balloon achieved a stable altitude of 15.2 km flying in an easterly direction on its potential circumnavigation of the globe.

The initial plan was to use UBSEDS21 to contact the International Space Station (ISS) via APRS on 145.825 MHz. However, the VHF radio on the ISS is out of order, so this flight is used to test the amplifier and hopefully talk to any APRS enabled satellites.

The winter launch means the payload needs to deal with the sun staying low above the horizon during the day. For this reason, sideways facing solar panels were used.

Original post Dec 9:

Another pico launch from Bristol this Sunday, December 11 between 0500 and 0530 GMT. This launch is using a 1.9m envelope and longer payload train, and so we have a NOTAM in place. The flight is predicted to head south-east towards France.

The payload will be transmitting Contestia 16/1000 on 434.610 MHz USB. Each transmission of Contestia 16/1000 will be preceded by 10 seconds of pips and RSID.

The Contestia transmission rate will be once every 30 seconds during launch and when power is available during the day. Otherwise the transmission rate will be once every 2 minutes. Hopefully the tracker will operate from dawn to dusk, and maybe also during the night.

The tracker will transmit APRS outside countries where the amateur license is not permitted airborne (like the UK). Additionally it will test APRS on 145.825 MHz, with an output power of +26 dBm (400 mW).

More details will appear on the website

Many Thanks,

Richard Meadows M0SBU
Bristol SEDS

High Altitude Balloon tracking and information links

Richard M0SBU took the amateur radio training courses run by the Chelmsford Amateur Radio Society (CARS) at Danbury in Essex. Further information on the courses is available from the CARS Training Coordinator, Christopher G0IPU
Tel: 07908-107951
Email: training2017 at

What is Amateur Radio?
Find an amateur radio training course near you

CAS-4A and CAS-4B to have Ham Radio Linear Transponders

XW-2A satellite launched September 19, 2015

XW-2A satellite was launched September 19, 2015

CAMSAT is working closely with a Beijing Government aerospace contractor to build two satellites with amateur radio linear transponder payloads.

Both will carry a 435/145 (U/V) 20 dBm (100 milliwatt) SSB/CW linear transponder, a 2m CW 17 dBm (50 mW) telemetry beacon and an AX.25 4.8 kbps GMSK 20 dBm (100 mW) telemetry downlink.

Each set of amateur radio equipment will have the same technical characteristics, but will have different frequencies for the 70cm band uplinks and 2m band downlinks.

The two micro-satellites will also carry optical remote sensing missions. Planned to be 494x499x630 mm dimension regular square shape and approximately 50 kg mass with three-axis stabilization system.

Expecting a launch from Taiyuan on March 31, 2017 into a 524 km SSO with an inclination of 42 degrees.

IARU Satellite Frequency Coordination pages