FUNcube Satellite Status June 2017

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

AMSAT-UK has released the FUNcube satellite status update report for June 2017.

AO-73 FUNcube-1

The transponder is normally operational only when the satellite is in eclipse, ie the solar panels are NOT being illuminated. During weekends (from PM Fridays UTC to PM Sundays UTC) the transponder is operational 24/7.

When the transponder is switched off, the telemetry beacon is on full power, when the transponder is on the beacon it is on low power. During holidays, e.g. Christmas, New Year, Easter, etc, the transponder maybe activated for extended periods. Watch AMSAT-BB for announcements which are usually made on Friday evenings (UTC)

The nominal transponder frequencies are:

Uplink: 435.150 – 435.130 MHz LSB (Inverting)
Downlink: 145.950 – 145.970 MHz USB
Telemetry Tx: 145.935 MHz BPSK

(The passband may be up to 15 kHz higher depending on on-board temps. Lower temperatures give higher freqs!)

FUNcube-2 (aka FUNcube on UKube)

The FUNcube-2 sub-system continues to operate autonomously and, almost continuously, in amateur mode. The transponder is operational and the telemetry downlink is functioning with about 70mW output. The FUNcube-1 Dashboard does not correctly display the telemetry but it does correctly decode the data and uploads it to the FUNcube Data Warehouse from where it can be examined. Most of the real time data channels are operational and these include battery voltages, temperatures and ADCS data coming via the main On Board Computer (OBC).

The transponder is interrupted for a few seconds every 2 minutes when the other transmitter sends its CW beacon and, occasionally, for a few seconds when the main OBC reboots (approx seven times each orbit).

The nominal transponder frequencies are:
Uplink: 435.080 – 435.060 MHz LSB (Inverting)
Downlink: 145.930 – 145.950 MHz USB
Telemetry Tx: 145.915 MHz BPSK

(The passband may be up to 10kHz higher depending on on-board temps. Low
temperatures give higher freqs!)

EO79 FUNcube-3

Due to power budget constraints the transponder cannot be operational 24/7 and an orbit specific schedule has been developed. The transponder will commence operation 27 minutes after the spacecraft enters sunlight and will stay on for a period of 25 minutes. This schedule may be modified in future months as a result of experience.

The nominal transponder frequencies are:
Uplink: 435.0723-435.0473 MHz LSB (Inverting)
Downlink: 145.946-145.971 MHz USB

Further detailed info on EO79 transponder frequencies is at:
https://amsat-uk.org/2016/11/10/eo79-funcube-3-transponder-commences-regular-operation/

EO88/Nayif-1/FUNcube-5

EO88 is presently operating in autonomous mode. The transponder is operational when the satellite is in eclipse, i.e. the solar panels are NOT being illuminated.

When the transponder is switched off, the telemetry beacon is on full power, when the transponder is on the beacon it is on low power.

The transponder frequencies are:

Uplink: 435.045 – 435.015 MHz LSB (inverting)
Downlink: 145.960-145.990 MHz USB
Telemetry Tx: 145.940MHz

All FUNcube transponders are sponsored by AMSAT-UK and AMSAT-NL. We are very grateful for the assistance given by Innovative Solution In Space Bv, The Netherlands.

AMSAT-BB http://www.amsat.org/mailman/listinfo/amsat-bb

FUNcube
Yahoo Group https://amsat-uk.org/funcube/yahoo-group/
Web http://www.funcube.org.uk/
Forum http://forum.funcube.org.uk/

More 73 on 73 Awards Issued

First 73 on 73 Award issued to Wyatt Dirks AC0RA

First 73 on 73 Award issued to Wyatt Dirks AC0RA

Paul Stoetzer N8HM reports more awards have been issued for contacts made via the AO-73 (FUNcube-1) amateur radio satellite.

The 73 on 73 Award aims to promote activity on AO-73. The requirements are straight-forward:

1. Work 73 unique stations on AO-73.
2. Contacts must be made on or after September 1, 2014.
3. There are no geographic restrictions on your operating location.

The latest recipients are:
20. David D’Aliesio IW0HLG – 31 May 2015
21. Kiyosi Hasegawa JA3FWT – 22 June 2015
22. Mariusz Kocot SQ9MES – 28 June 2015
23. Hector Luis Martinez W5CBF – 12 July 2015
24. George K. Carr II WA5KBH – 17 July 2015
25. Michel Ribot F6GLJ – 18 July 2015
26. Paul Stoetzer N8HM – 21 July 2015
27. Jeffrey Lamb NX9B – 2 August 2015
28. Imre Füzi HA1SE – 13 September 2015
29. Herman Blom PB0AHX – 1 November 2015
30. Joseba Andoni Barrio – 22 November 2015

Full information on how to apply is at https://amsat-uk.org/funcube/73-on-73-award/

Second Birthday of FUNcube-1

FUNcube-1 flight model - Image credit Wouter Weggelaar PA3WEG

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

FUNcube-1 (AO-73) was launched into space two years ago on November 21, 2013.

We are delighted to be able to report that more than 900 stations, including many schools around the world, have received the telemetry from the spacecraft since launch. Our Data Warehouse is storing more than 750 MB of data from almost 1 million data packets. We are very grateful to everyone who has been contributing to the success of this mission. Please continue to keep the data flowing as it will provide a valuable resource for students in the future.

The stats continue – speeding along at around 17,500 mph, FUNcube-1, which had a launch mass of just 982 grams, has completed more than 10,500 orbits of the earth. This means a total distance travelled of more than 260 million miles.

All telemetry sensors continue to provide valid data, real time, whole orbit and high resolution channels alike. The flight code is really robust and we have only had three unexpected “events” since launch. Two of these we believe to have been caused by noise of the command receiver being incorrectly interpreted as a command and only one appears to have been caused by a RAM error. The battery and solar panels also continue to work perfectly and provide a very positive power budget.

We have sent out many Fitter messages for school and other similar events. On November 17, 2015 there was a demonstration at Thorne Green Top School in Yorkshire. Here is a report from Dave Ryan EI4HT/M0GIW:

FUNcube-1 Educational Outreach - Thorne Green Top School in Yorkshire

FUNcube-1 Educational Outreach – Thorne Green Top School in Yorkshire

Good Morning All  

Firstly -thanks to all for your help, we had a great morning at Green Top and the highlight was FUNcube.

I started with a slide show talking about communications from cave paintings all the way up to smartphones, we looked at space communications and travel from Sputnik to Astra and Apollo to the Millennium Falcon! We spoke about satellites and how they are used every day and how we all got to watch “I’m A Celebrity” via Satellite last night from Australia.

I brought in lots of props too, some old Motorola MX330 radios, some PMR 446, and a marine band radio .I also had a small model of a CubeSat that I knocked up over the weekend, I also passed around some NOAA images from last week’s Abigail storm and I had a few QSL cards from ISS and MIR from years ago when I lived in Ireland.  

The FUNcube pass was great, really strong signals, I had my turnstile and FCD set up and had audio through speakers and used the class projector to show Satpc32 and the Dashboard.  

There was a great buzz of excitement when we got the first packet and even more when the Fitter messages came through. The kids were fascinated to see the signal arrive just as the software predicted and then hear the telemetry and the decode.  

After the pass we were able to look at the Warehouse online and print off the QSL card and certificate.

 I didn’t get a chance to take many pics but Mrs Overson will update the School Blog and she took lots of pics.

http://greentopschool.co.uk/blog

Once again thanks to all at FUNcube, looking forward to Tim Peake on the ISS in the New Year and planning another visit to the School then.

Regards

Dave EI4HT / M0GIW

PS: I was back dropping my own kids off this morning and Mrs Overson told me they have printed a QSL card and Certificate for each of the students and they have used them for their class journals.

As well providing a great educational resource, FUNcube-1 operates at night and generally at weekends with the linear transponder active for radio amateurs to use for communications. The transponder continues to provide an excellent service. As users will be aware, the transponder uplink frequencies vary with receiver temperature. The RX temp telemetry channel is the best one to use for tracking this effect. This does make it quite difficult to use full computer control for transponder operations and we have already developed new oscillator circuits to improve this performance for future missions.

For the telemetry uplinked to the Data Warehouse, it is possible to download special Certificate or QSL Card here http://amsatuk.me.uk/on/funcube_qsl.php and, for transponder users, the “73 on 73 award” continues at https://amsat-uk.org/funcube/73-on-73-award/

The Nayif-1 CubeSat mission, which includes a full FUNcube payload, is expected to be launched into a similar orbit in the first half of next year and will provide an additional level of service to the community.

Meanwhile we hope everyone will continue to have fun with FUNcube-1!

FUNcube-1 https://amsat-uk.org/satellites/communications/funcube-1/
Nayif-1 https://amsat-uk.org/satellites/communications/nayif-1/
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