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Varios ham radio satellites news.
KrakenRF has made an update about a new S-Band feed for the Discovery Dish system. It can receive S-band satellites between 2.2 – 2.3 GHz so it seams not to cover the amateur band at 2.4 GHz.
There is also a new wiki at:
https://github.com/krakenrf/discoverydish_docs/wiki
Re-post from ANS-329
The satellite frequency coordination committee of the International Amateur Radio Union (IARU) on November 15 completed approval of frequency requests from the Chinese Amateur Satellite Group (CAMSAT) for a new amateur satellite to be launched next year.
CAS-11, a 6U CubeSat will include:
The above transponders and beacon will work 24/7 when the satellite power supply is sufficient. Amateur radio enthusiasts around the world can use it for two-way radio relay communication, data storage and forwarding communication, and receive satellite CW beacons.
The CAS-11 satellite will also be equipped with a 2.4 GHz multi-mode amateur radio satellite beacon transmitter, which is designed and built by university students, high school students and primary school students from Beijing Donggaodi Science and Technology Museum and Beijing University of Posts and Telecommunications under the guidance of CAMSAT. This is an unprecedented satellite project in China. It has brought opportunities for learning and practicing amateur radio and amateur satellites to students of all grades from elementary school to university, and promoted the application of amateur radio in space. This 2.4 GHz experimental beacon transmitter can switch to transmit five different modes of radio signals, and it will work continuously when the satellite is fully powered.
This project aims to cultivate students’ knowledge, skills and interests in amateur radio satellites. All transmission modes operate at 2.4 GHz, and the working modes are converted by the on-board computer program and ground remote control commands. It can work in the following modes: CW Telemetry Beacon, FT8 Telemetry Beacon, PPM Telemetry Beacon, or USB/SSTV Robot36, PD120 1. This beacon will transmit at 2405.500 MHz, EIRP 27 dBm.
CAS-11 carries three cameras, and the photos it takes are stored in the flash memory on the satellite. The builders have designed a simple remote control system based on DTMF commands. Amateur radio enthusiasts around the world can send DTMF commands to download the photo catalog and all photos taken by all cameras.
Anticipating a launch in September, 2025 into a 536 km polar orbit from Haiyang Sea Launch Platform, Shandong, China.
[ANS thanks IARU and Alan Kung, BA1DU, of CAMSAT for the above information.]
Re-post from ANS-329
At the request of Harbin Institute of Technology and Amur State University, AMSAT has designated ASRTU-1 as ASRTU-OSCAR 123 (AO-123).
ASRTU-1 was launched on November 4, 2024 at 23:18 UTC, on a Soyuz launch vehicle from Vostochny Cosmodrome, Russia. Built and operated by Harbin Institute of Technology and Amur State University, the satellite carries a V/U repeater, UHF SSDV digital image transmitter, and a 10.5 GHz QPSK image transmitter. All of these payloads have been successfully tested, and the repeater has been operational for QSOs.
The satellite contains an FM transponder, which is currently operational, with an uplink of 145.850 MHz (67 Hz CTCSS tone required) and a downlink of 435.400 MHz. After the repeater detects the end of uplink, it will wait for 0.5s. If no new uplink in 0.5s, telemetry will be sent. So make fast QSOs so the telemetry is less like to interrupt you.
The satellite also contains two cameras with an SSDV downlink for low resolution images on 436.210 MHz, and a high speed downlink on 10.460 GHz for high resolution images.
Windows software for decoding telemetry is available at https://drive.google.com/file/d/1W8nm-P0_h0J1Bd1eif74mLo-EuRdWcjH
Two-Line Keplerian elements (TLEs) may be found at http://asrtu.mqsi.xyz/ASRTU_TLE.txt
AMSAT congratulates the Harbin Institute of Technology and Amur State University, thanks them for their contribution to the amateur satellite community, and wishes them continued success on this and future projects.
[ANS thanks Drew Glasbrenner, KO4MA, OSCAR Number Administrator, for the above information.]
Carsten Grøn / OZ9AAR (@CarstenGrn1) has released his tracking software SatTrack. Please note and respect that it’s released as is with no support.
From QO-100 Dx Club we see the following information:
A new operator, Alex – DL2ALY, has arrived at Neumayer-Station III DP0GVN two days ago.
He fixed the QO-100 setup (by exchanging the LNB) and it’s likely he will be very active in the coming months.
TNX Felix, DL5XL and Matthias, DD1US for the info
Re-post from ANS-315
On November 4, 2024 at 23:18 UTC, a Soyuz rocket launched from Vostochny with at least 17 satellites using amateur satellite service frequencies. Among those launched was ASRTU-1, a 12U CubeSat designed by Russian and Chinese students and developed by the Harbin Institute of Technology in Harbin, China, for education and amateur radio.
The satellite contains an FM transponder, which is currently operational, with an uplink of 145.850 MHz (67 Hz CTCSS tone required) and a downlink of 435.400 MHz. After the repeater detects the end of uplink, it will wait for 0.5s. If no new uplink in 0.5s, telemetry will be sent. So make fast QSOs so the telemetry is less like to interrupt you.
The satellite also contains two cameras with an SSDV downlink for low resolution images on 436.210 MHz, and a high speed downlink on 10460.00 MHz for high resolution images.
On November 7, 2024, the camera system was tested for the first time. N6RFM uplinked the command and the image was downloaded by Chinese stations using the UHF SSDV downlink.
Windows software for decoding telemetry is available at https://drive.google.com/file/d/1W8nm-P0_h0J1Bd1eif74mLo-EuRdWcjH
A Live ISO Linux image is also available for telemetry at https://drive.google.com/drive/folders/1T6GMNnDNEEavckoe4oPXPIU_SPFXLDd4
A Telegram group has been created for discussing the satellite: https://t.me/+I5NTtX7eAJA4ZDVl
Latest TLEs:
ASRTU-1_20241108D
1 99130U 24313.98869213 .00036395 00000-0 15511-2 0 00005
2 99130 097.3830 178.7387 0016365 224.8894 196.6964 15.22873038000014
| ASRTU-1 | |||
| Uplink FM (67 Hz CTCSS) | Downlink FM | Comments | |
| ASRTU-1 | 145.850 MHz | 435.400 MHz | In orbit, commissioning |
| Also downlinks on 436.210 MHz, 10460.00 MHz. Download Live CD for telemetry decoding. | |||
[ANS thanks BG2BHC, the IARU, and AMSAT-F for the above information]