The satellite user manual can be downloaded here: CAMSAT XW-4 (CAS-10) Amateur Radio Satellite User’s Manual V1.0
CAMSAT’s transponder satellite CAS-5A (Fengtai OSCAR-118) launched on December 9, 2022, carrying three amateur radio transponders.
The satellite user manual can be downloaded here: CAS-5A Amateur Radio Satellite User’s Manual V1.0
CW Beacon: 435.570MHz CW 22wpm
U/V Linear Transponder: Uplink 145.820MHz, Downlink 435.540MHz, Bandwidth 30kHz
U/V FM Transponder： Uplink 145.925MHz，Downlink 435.600MHz Bandwidth 15kHz
H/U linear Transponder: Uplink 21.435MHz，Downlink 435.505MHz Bandwidth 15kHz
Telemetry： 435.650MHz GMSK 4800bps
Update Dec 9 : Contact POSTPONED An ARISS contact between students at Stella Maris College, Gzira, Malta, callsign 9H1MRL and the International Space Station (ISS) is scheduled for TBD.
The ISS crew member will be astronaut Koichi Wakata KI5TMN who will be using the ISS callsign OR4ISS. The downlink frequency is 145.800 MHz and the signal should be receivable in the British Isles and Europe.
A little bit of information about the school follows. Stella Maris College is a Lasallian school. It takes its inspiration from its founder John Baptist de la Salle. In the Christian faith, John De La Salle is venerated as the Patron Saint of Teachers.
Basically, a Lasallian School has the following characteristics:
A) respect for each student as a unique person.
B) A strong spirit of Community.
C) A school of Quality.
D) A school that embraces everyone.
E) Shows special preference for persons who are considered poor financially, morally, physically, psychologically.
Our school is a place where everyone strives to create and nurture a holistic, inclusive and well-ordered learning climate thereby ensuring a high-quality, values-based academic preparation.
The school has an astronomical observatory and electronics forms part of the school curriculum.
The contact is being conducted by five local radio amateurs and we call ourselves ARISS team Malta; Dominic 9H1M, Manuel 9H1GW, Andrew 9H2AV, Trevor 9H5TS and Anthony 9H2AS. We have set up a station at the school’s auditorium and a 10 element crossed Yagi and rotator on the roof.
The whole event will be streamed live on YouTube on the following URL:
73s Manuel 9H1GW
Another year has passed and FUNcube 1 has continued to operate from its orbit around 600km above the earth. To start with some statistics. The spacecraft creates and downlinks data in frames that run for two minute periods. It has now transmitted more that 16 million of these frames or “Sequence Numbers”. Another big statistic is that more than 10 million data packets have been received by stations that have forwarded them to our Data Warehouse.
You can see the leading ground stations here http://warehouse.funcube.org.uk/ui/fc1-fm/satellite_ranking – special congratulations to those at the top scorers…many of them have individually forwarded more than 1 million packets. Thanks to all contributors around the world. Having this network of ground stations has enabled us to easily monitor the status of the spacecraft easily.
Back here on earth, as mentioned, we have continued to monitor the health of the spacecraft as these illumination levels and spin/tumble rates have changed over the months.
Whilst mentioning big numbers, we are now approaching 48500 orbits and this equates to a distance travelled of 2174091840000000000000000000 fermis since launch. That’s 2.1 ronnafermis. Yes these are genuine SI Units of Measure and are equivalent to 14.16 AU or almost half way to Neptune.
After some time in full sun, the spacecraft is now experiencing “normal” eclipse periods of around 25 minutes each orbit. This will reduce the on board temperatures and may influence the tumble rate which has been between 2 and 5 seconds for some time. The is quite fast and is not helping telemetry reception with our 5 second data frame mentioned above.
The present operational schedule is for high power telemetry when in sunlight and receive only when in eclipse. This seems to suit the EPS quite well and the battery bus voltages have been quite stable.
At least that was correct until early morning on Friday 11th November when the indicated bus voltage appeared to “drop off a cliff” over the period of just four orbits. Further analysis showed that the 3.3V bus consumption had suddenly jumped four times normal. As can be seen by the graph above this problem then disappeared just as suddenly and the bus voltage recovered quite quickly. Investigations are continuing!
Please keep the telemetry reports coming in and let us know if you would like a Fitter message uploaded for any educational or outreach events.
On Friday, October 7, 2022, from 15:14 GMT there will be a amateur radio contact from Antarctica with the International Space Station (ISS).
Students from the #38 Raul Alfonsin school at the Esperanza Antarctic base will ask questions that will be answered by astronaut Kjell Lindgren, KO5MOS, aboard the ISS, with a telebridge link being provided by ON4ISS, AMSAT Belgium.
This event was managed before ARISS (Amateur Radio on the ISS) by CETRA (Science, Education and Technology united by Amateur Radio) subcommission of AMSAT-LU, led by Luis Funes, LU8YY/Q, NASA/ARISS Telebridge.
AMSAT thanks COCOANTAR (ANTARCTIC Joint Command) for their collaboration and commitment to make this special event possible (1st Contact of the ISS with Antarctica), and to ARISS Canada for their valuable support.
This adds to the WSPR LU1ZV beacon active in Antarctica donated by AMSAT-LU.
It can be seen on https://www.instagram.com/coconatar/?hl=es and broadcast by COCOANTAR, TN and graphic and television media.
Images on http://amsat.org.ar/?f=antartida
In India on 15 Sep 2022, on the occasion of National Engineering Day, an excellent Workshop titled “Fascinating World of Ham Radio & Amateur Radio Satellites” was conducted by AMSAT-INDIA’s Regional Coordinator Rajesh Vagadia VU2EXP at reputed Marwadi University Rajkot (Gujarat) INDIA.
There were 80 B.Tech students participated from ICT Dept + MU’s Student Satellite Project team. Yes Marwadi University has announced to build a Student Satellite and to be launched by ISRO!
Our ham team includes YL Sakshi Vagadia VU3EXP & YL Shyama Vagadia VU3WHG, both member extended great support to setup VHF station, organise & display Radio Stuff and assisting in practical demos including SSTV, Digital & VHF FM Demo with groups! Btw Shyama VU3WHG also remains one of the student coordinator of this event as well as Team member of Student Satellite Project.
All participants gained knowledge on broad spectrum of topics from CW to Cube Satellites! In first session Radio Fundamentals, operating protocols, radio jargons, licensing procedure etc were covered. In second session participants were briefed with various Ham radio events like FD, Hilltop, Light House activation, POTA, IOTA, EME, Satellite tracking, SatCom, High Altitude Balloon tracking, ARISS SSTV & Student outreach program which gives exposure to gain knowledge & develop skills from outside radio Shack activities also!
Lots of fruitful discussion happens during workshop and students were satisfied with all of their queries.
In workshop we had gracious presence of Shri Naresh Jadeja (Registrar), Dr. R. Sridaran (Dean), Dr. Jaypalsinh (MCA Dept), and Dr. Shobhit Patel (Researcher). We also get positive response from Marwadi University authorities to be engaged with AMSAT-INDIA to conduct more programs & projects in upcoming period for benefit of student community.
We also thank to Shri C. D. Parmar Sir (HOD ICT) and Program Coordinator Prof Mitesh Solanki for all the great support provided to make this workshop successful.
I am glad to notice this Ham workshop created a Ham buzz in the Marwadi University campus. For me too it was great honor to present & share my best knowledge amongst budding engineers on the occasion of Engineering Day!
Rajesh Vagadia VU2EXP
Regional Coordinator West India Zone AMSAT-INDIA