Paulo PV8DX has released a video describing the new TubeSat Tancredo-1 and showing reception of the 437.200 MHz downlink by Drew KO4MA.
Tancredo-1, mounted in a TuPOD Deployer, was ejected from the International Space Station on January 16, 2017. The satellite is a STEM project built by middle school students at Escola Municipal Tancredo Neves school in Ubatuba, in the state of Sao Paulo, Brazil.
The video is in Portuguese but try enabling the YouTube Closed Caption subtitles and use the Auto-translator to get English.
Watch TubeSat TANCREDO 1 – By PV8DX
Links and further information on the Tancredo-1 TubeSat
Six CubeSats Deploy from ISS
The first of the QB50 CubeSats that are destined for deployment from the International Space Station are now awaiting their turn to be uplifted to the ISS.
In addition to the ISS deployments it is planned that there will be two further batches launched using other vehicles.
The exact timing of these events is not yet available but, in advance, here is a fully updated list of all CubeSats involved. Also included are the details of their science experiments and their downlink frequencies and modulation modes. The frequencies have been coordinated by the IARU Frequency Coordination team and, generally, all the spacecraft will use 9k6 data rates on 70cms.
Download the QB50 Frequency Excel Spreadsheet – http://tinyurl.com/QB50-Frequencies-20170201
Steve Hartley G0FUW presents the Louis Varney Cup to Wouter Weggelaar PA3WEG 2016 – Credit Mike Rupprecht DK3WN
Wouter Weggelaar PA3WEG has retrieved videos of talks given at AMSAT-UK Colloquium 2008-2012 and made them available on YouTube.
The videos were made by members of the British Amateur Television Club (BATC) and stored on the club’s streaming site. Dedicated BATC members have carried out the world-wide streaming and recording of the AMSAT-UK International Space Colloquium since 2007.
Due to lack of source information the descriptions and titles of the videos are not as informative as they should be. Have a search through them and share links with others on Twitter and Facebook.
Watch the videos at https://www.youtube.com/user/AMSATUK/playlists
Colloquium schedules giving speakers names and presentation titles for 2009-2012 are available on the bottom of this page https://amsat-uk.org/colloquium/
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.
The 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:
#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 http://amsat.org.uk/iaru
Middle School Students’ Tancredo-1 TubeSat Scheduled for Launch
ITF-2 CubeSat to deploy from ISS
ITF-2 reception report form https://operationitf-2.blogspot.co.uk/p/blog-page_58.html
Kents Hill Park Conference Centre, Milton Keynes, MK7 6BZ
AMSAT-UK is very happy to announce that the dates of the next AMSAT-UK Colloquium will be October 14-15, 2017.
This year it will be incorporated into the RSGB Convention at the Kents Hill Park Conference Centre, Timbold Drive, Milton Keynes, MK7 6BZ. Exact details are currently being finalised with the RSGB and these will be notified when they are known.
If you have not been to Kents Hill Park before, it is very close to the M1 motorway and is near to Bletchley Park, where RSGB members have free entry. For overseas visitors it is convenient for planes to London Luton Airport (30-minute taxi ride) and also London Gatwick and Birmingham airports, both of which have direct train connections to Bletchley and/or Milton Keynes stations. These stations are approximately 10 minutes away by taxi.
Colloquium page: https://amsat-uk.org/colloquium/
Travel Information http://kentshillpark.com/how-to-find-us
Mamatha 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 http://epubs.surrey.ac.uk/812783/
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