FUNcube-1 realtime data available as .csv download

FUNcube Data Warehouse

FUNcube Data Warehouse

The FUNcube Data Warehouse is now producing .csv files containing Realtime data channels for the AO-73 CubeSat.

The data is produced every hour, on the hour and contains 3000 rows, starting 250 minutes before the last record in the database.

As we do not have worldwide coverage, there will be missing segments of data. To overcome this, we fill the data with the last value before the gap.

All records are have an associated ‘satellite time’ this is based on the known activation time of the satellite and offset calculated from the sequence number and frame type. The satellite is currently 3 hours 50 minutes ahead of the data server time.

Please visit the Real Time Data page and click on the link in the descriptive text.

http://warehouse.funcube.org.uk/

We welcome feedback on the format and content. Please use the forum:

http://forum.funcube.org.uk/

Regards

Dave Johnson, G4DPZ, FUNcube Team Member

Deorbitsail CubeSat

Deorbit Sail - Image Credit Surrey Space Centre

Deorbit Sail – Image Credit Surrey Space Centre

Students and researchers at the Surrey Space Centre (SSC) in the University of Surrey, Guilford, are developing the 3U CubeSat Deorbitsail. It is planned to launch on a Dnepr rocket into a 600 km Low Earth Orbit (LEO).

The aims of the mission are:

(1) Deploy a large (5-by-5-metre) square Kapton sail.

(2) Deorbitsail is equipped with 3-axis-stabilizing attitude determination and control system. A novel capability of this system is pointing via Centre-Of-Mass / Centre-Of-Pressure (COM/COP) offset.

(3) The satellite will deorbit much more quickly than otherwise due to its deployable sail. Satellite pointing will be optimized by the attitude control system for maximum drag.

(4) The satellite will provide beacons which radio amateurs will be able to receive. The ISIS UHF/VHF radio will provide a 9600 bps BPSK downlink on 145.975 MHz.

DeorbitSail electronics stack - Image Credit DeorbitSail Consortium

DeorbitSail electronics stack – Image Credit DeorbitSail Consortium

For further information read DeOrbitSail Nanosatellite Mission
https://directory.eoportal.org/web/eoportal/satellite-missions/d/deorbitsail

DeorbitSail: A Spacecraft Mission to deploy sails in Space http://www.athena-spu.gr/projects/DeOrbit

Kapton https://en.wikipedia.org/wiki/Kapton

Deorbitsail: a deployable sail for de-orbiting by Olive R. Stohlman, University of Surrey and Vaios Lappas, University of Surrey http://arc.aiaa.org/doi/abs/10.2514/6.2013-1806

Inspection of a co-orbital solar sail using a microthruster attitude control system
http://surreyspacecentre.wordpress.com/2013/06/18/inspection-of-a-co-orbital-solar-sail-using-a-microthruster-attitude-control-system/

Open access to latest research output from Surrey Space Centre
https://amsat-uk.org/2013/06/19/open-access-to-ssc-research/

RAG 2014 tickets on sale

National Space Centre Leicester

National Space Centre Leicester

The BAA Radio Astronomy Group will be holding its 2014 General Meeting on Saturday, May 17 at the National Space Centre, Leicester, LE4 5NS. The last two meetings have both sold out ahead of the day and early booking is advisable.

This year Dr Klaas Wiersema (University of Leicester) will describe how new radio telescope technologies enable the exploration of the “transient” radio Universe, from the mysterious millisecond duration “fast radio bursts” to the energetic afterglows of gamma-ray bursts (GRBs) which are sometimes visible for years. The presentation will show how new technology is allowing us to study afterglows and other transients in a completely new way.

Supporting papers so far offered are: an ultra-low cost Hydrogen Line radio telescope (Peter East); the modelling of our local galactic topology (Gordon Dennis); the design of an Arduino-based magnetometer (Jonathan Rawlinson M0ZJO); making and analysing observations with Starbase (Laurence Newell); experiments with a small SDR radio telescope (David Morgan 2W0CXV); and reports on developments at EAARO (Jason Williams M0YJW) and the Harold Clayton Observatory (Dave James).

Tickets for the event cost £12 for BAA members and £15 for non-members, including free parking at the NSC and free admission to the main attraction, excluding the Planetarium show. Tea and coffee will be provided during the breaks but lunch is not included. Delegates are welcome to bring their own lunch or the NSC shop (Boosters) sells a range of sandwiches and other refreshments. It would help the NSC if you could also note the number of people in your party that are likely to use Boosters when you book tickets.

All ticket sales will be via the BAA but you do not need to be a BAA member to purchase tickets.  A Booking Form is available at the BAA RAG website at http://www.britastro.org/radio/ from where you can also download the latest edition of RAGazine.

The closing date for the next edition of RAGazine is February 7. Please think whether you can offer any material for this or future editions.  This can be a technical or education article (inc. work in progress, or a negative experiment); project ideas; appeals for teaming; news items; practical tips; relevant professional developments; humour; book reviews; useful resources; parts and equipment news and reviews; observatories; calendar events, etc.  RAGazine covers newcomers through experienced folk, radio astronomy and geophysics, without restriction over frequency range or technology base.

If you have any queries regarding the RAG 2014 event, please mail me direct at: radiogroup <at> britastro.org

Best wishes
Paul Hyde G4CSD
BAA RAG Coordinator

BAA-RAG Yahoo Group http://groups.yahoo.com/group/baa-rag

Ofcom 2.3 and 3.4 GHz Consultation Responses

AMSAT-UK Logo

AMSAT-UK Logo

The responses to Ofcom’s consultation on the 2300 and 3400 MHz bands are now available.

The joint RSGB, UK Microwave Group, AMSAT-UK and BATC response says:

Amateur radio has international secondary allocations in the 2300 and 3400 MHz bands, which are adversely affected by Public Sector Spectrum Release (PSSR). Whilst the detailed impact on amateur radio usage has been covered in an earlier Ofcom consultation, a continuing concern is to achieve a harmonised solution that gives both existing and new users a degree of certainty and consistency. This is particularly true for frequency segments that are key for long distance weak-signal amateur and amateur-satellite activity, such as 3400-3410 MHz.

In this respect the proposed 3.4 GHz Time Division Duplex(TDD) band plan (currently on CEPT consultation) is of serious concern as we discuss overleaf, and would welcome Ofcom taking a more pro-active stance to refine it.

Read the joint response at
http://stakeholders.ofcom.org.uk/binaries/consultations/2.3-3.4-ghz/responses/RSGB.pdf

The other responses are at
http://stakeholders.ofcom.org.uk/consultations/2.3-3.4-ghz/?showResponses=true

Ofcom 2300 and 3400 MHz consultation page
http://stakeholders.ofcom.org.uk/consultations/2.3-3.4-ghz/

Also see the Spectrum Sharing Consultation
https://amsat-uk.org/2014/01/12/ofcom-spectrum-sharing-consultation/

UNSA-SAT1 – The first 3.4 GHz CubeSat https://amsat-uk.org/2014/01/08/unsa-sat1-the-first-3-4-ghz-cubesat/

The FUNcube-1 TLE Lottery is over!

DK3WN-FUNcube-1-cid_image001_jpg01cf0edcThe FUNcube Team have now concluded that FUNcube-1 (AO-73) is indeed Satellite Number 39444 and International Designator 13066AE.

The team are indebted to Mike Rupprecht DK3WN who did this analysis at the Time of Closest Approach (TCA) during a near overhead pass last weekend.

The Keplerian Two Line Elements (TLEs) from Celestrak on Tuesday, January 14, 2014 are:

FUNCUBE (AO-73)
1 39444U 13066AE  14013.85499729  .00002182  00000-0  30369-3 0   361
2 39444  97.7931  89.7316 0064296  24.5145 335.9098 14.77378945  6675

FUNcube-1 in Practical Wireless Magazine

FUNcube-1 flight model - Image credit Wouter Weggelaar PA3WEG

FUNcube-1 flight model – Image credit Wouter Weggelaar PA3WEG

In the February issue of Practical Wireless the excellent Data Modes column, written by Mike Richards G4WNC, devotes three pages to describing how to receive the signals from the FUNcube-1 (AO-73) satellite which was launched on November 21, 2013.

The World of VHF column by Tim Kirby G4VXE also covers FUNcube-1 and what is believed to be the first contact between Cuba and the UK on the FO-29 satellite. The contact took place on October 19, 2013 between Hector Martinez CO6CBF and Peter Atkins G4DOL.

It is understood that postal copies of Practical Wireless can be purchased using a Debit or Credit card by ringing +44 (0)1202 751611 Monday – Thursday 8.30am – 4.00pm.
Practical Wireless http://www.pwpublishing.ltd.uk/?page_id=632

G4WNC Data Modes Yahoo Group http://groups.yahoo.com/group/datamodes