Six CubeSats to Deploy from ISS

International Space Station - Image Credit NASA

International Space Station – Image Credit NASA

Masahiro Arai JN1GKZ reports that six CubeSats delivered to the International Space Station by the HTV-6 will deploy from the ISS using the new JEM Small Satellite Orbital Deployer (J-SSOD) on Monday, January 16.

JAXA ISS CubeSat Deployment 2017-01-16The new J-SSOD has four satellite install cases. One satellite install case has 3U space, so the new J-SSOD could deploy twelve 1U CubeSats at a time.

The six CubeSats are installed as follows:

Case    CubeSats
#1        three 1U CubeSats ITF-2、WASEDA-SAT3、FREEDOM
#2        one 3U CubeSat    EGG
#3        one 2U CubeSat    AOBA-VELOX3
#4        one 3U CubeSat    TuPOD (including Tancredo1 and OSNSAT)

ITF-2、WASEDA-SAT3、AOBA-VELOX3, TuPOD and Tancredo1 have amateur radio downlinks.

#1 and #2 will be deployed at 0900-0930z January 16, #3 and #4 will be 1030-1100z.

Live broadcast will start at 0850z on the JAXA YouTube channel.

IARU Amateur Satellite Frequency Coordination

Middle School Students’ Tancredo-1 TubeSat Scheduled for Launch

ITF-2 CubeSat to deploy from ISS

ITF-2 reception report form

Small Satellite SDR Paper

Mamatha R. Maheshwarappa 2E0CZOMamatha R. Maheshwarappa 2E0CZO has released her paper “Improvements in CPU & FPGA Performance for Small Satellite SDR Applications”.

Abstract: The ongoing evolution in constellation/formation of CubeSats along with steadily increasing number of satellites deployed in Lower Earth Orbit (LEO), demands a generic reconfigurable multimode communication platforms. As the number of satellites increase, the existing protocols combined with the trend to build one control station per CubeSat become a bottle neck for existing communication methods to support data volumes from these spacecraft at any given time.

This paper explores the Software Defined Radio (SDR) architecture for the purposes of supporting multiple-signals from multiple-satellites, deploying mobile and/or distributed ground station nodes to increase the access time of the spacecraft and enabling a future SDR for Distributed Satellite Systems (DSS).

Performance results of differing software transceiver blocks and the decoding success rates are analysed for varied symbol rates over different cores to inform on bottlenecks for Field Programmable Gate Array (FPGA) acceleration. Further, an embedded system architecture is proposed based on these results favouring the ground station which supports the transition from single satellite communication to multi-satellite communications.

You can download the PDF of the paper from

Mamatha worked on the STUDSAT-1, STUDSAT-2 and STRaND-1 satellites which carried amateur radio payloads and was Satellite Officer & Member of the Surrey Electronics and Amateur Radio Society

BY70-1 FM transponder contact video

Christian Jacobs 2E0ICL has released a video of his recent contact with Peter Goodhall 2E0SQL via the new amateur radio FM satellite BY70-1.

The satellite was launched into orbit on December 28, 2016. This is orbit #27.

Watch New FM transponder satellite BY70-1

BY70-1 information

Christian Jacobs 2E0ICL has also released a video of his recent FM contact via the SO-50 satellite during a recent Summits On The Air (SOTA) activation at Walbury Hill (summit identifier G/SE-001).

A total of 13 contacts were made, mostly on 2m SSB, including some FM satellite working via SO50 with 10 watts to an Arrow dual-band antenna.

Watch Summits on the Air: G/SE-001, Walbury Hill

SO-50 satellite

BY70-1 FM transponder satellite

Arrow 2m/70cm dual-band antenna

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

FUNcube-1 / AO73 celebrates 3 years in space

FUNcube Team Monitor Launch

FUNcube Team Monitor Launch

Monday, November 21, 2016, marked the third birthday in space for the 985 gram spacecraft FUNcube-1 / AO73.

AO-73 (FUNcube-1) - Image credit Wouter Weggelaar PA3WEG

AO-73 (FUNcube-1) – Image credit Wouter Weggelaar PA3WEG

FUNcube-1 was launched at 07:10 UT on November 21, 2013 and its first signals were received immediately after deployment over the Indian Ocean by amateurs in South Africa. Since then it has been operating continuously in either its education mode or, with the transponder active, in amateur mode when in eclipse and at weekends.

The FUNcube team are very grateful to everyone who has been contributing their telemetry records to the Data Warehouse and also to those who are using FUNcube-1 for educational outreach to schools and colleges around the world. This important part of our mission is intended to encourage young people to develop an interest and passion in all STEM subjects for their future.

FUNcube-1 Launch Day Mug

FUNcube-1 Launch Day Mug

The spacecraft is operating nominally – the telemetry indicates that all the sub-systems are fine. The battery voltages, solar panel charge currents and on board temperatures are virtually unchanged since launch.

In addition to FUNcube-1, there are now similar FUNcube transponders operating in low earth orbit on the UKube-1 and EO79/QB50p1 CubeSats.

The team has recently contributed to the development of Nayif-1, which is presently awaiting launch, and is currently working on a number of further CubeSat and microsat projects.

Happy Birthday AO73!

Get your 73 on 73 Award, details at

AO-73 (FUNcube-1) website

FUNcube Yahoo Group

Howard Long G6LVB working AO-73 while Ciaran Morgan M0XTD captures the downlink passband data using a FUNcube Dongle Pro+ and Microsoft Surface Tablet

Howard Long G6LVB working AO-73 while Ciaran Morgan M0XTD captures the downlink passband data using a FUNcube Dongle Pro+ and Microsoft Surface Tablet