For the @1C_SO50 22nd anniversary of the launch of the Saudi Sat SO50 the satellite UMKA-1 RS-40S is sending SSTV on 437.650 MHz FM.
The SSTV format is Robot 36. I have used the following to receive:
- Airspy Mini
- SDR-Console V3
- RX-SSTV by ON6MU
Category: Ham Satellite news
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Varios ham radio satellites news.
Updated 2024-12-18: Unfortunately, the launch carrying PARUS-T1A failed.
Info from SatNOGS Forum:
Hi there; this is from Develop Team of PARUS-T1A
We are writing to request your support for the upcoming launch of the PARUS-T1A 3U CubeSat. This CubeSat is scheduled to be launched from Japan on a SpaceOne rocket in the next few days.
Satellite Details:
Call Sign:BN0TIT-11
TLE:
PARUS-T1A
1 99999U 24349.12075232 .00000000 00000-0 00000-0 0 00002
2 99999 097.3302 066.1302 0009155 254.6453 086.7753 15.22849958000018
Frequency List:
* Telemetry: 437.850 MHz AFSK 1200bps, AX.25
* APRS Digipeater: 145.825 MHz
* Voice Repeater:
* Uplink: 145.980 MHz (Tone 67Hz)
* Downlink: 435.250 MHz
Data Packet Frame Format:
T1A_housekeeping.pdf (139.9 KB)
T1A_tlm.zip (12.2 KB)
We kindly request your assistance in developing a dashboard to visualize the raw data received from the PARUS-T1A CubeSat. This dashboard should be able to interpret the data packet frame format and display the information in a clear and concise manner.
Additionally, we would appreciate it if you could setup it for observation system. We have attached the IARU frequency coordination document for the amateur radio payload, which can be used as a reference.
We believe that your expertise and resources can significantly contribute to the success of this mission.
Again; we appreciate for your help and contribution
Thank you for your time and consideration.
Sincerely,
The Team of PARUS-T1A
Vy 73!
Randson Huang
BV2DQ /WJ2I
11:th December I had the honor to make an AMSAT presentation for the Gardermogruppa (LA2G) north of Oslo, Norway. The presentation was held remote with Teams.
The subjects was:
- Short history of AMSAT and amateur radio satellites
- Different types of satellites
- Satellite orbits
- Equipment – radio and antennas
- How to track and know the status of current satellites
- QSO tips and tricks
- Telemetry and the SatNOGS network
- Live demo of PstRotator and QO-100 FT8 QSO
Thank you LA2G and Bjørn Otto Dønnum LB7EJ for setting up this meeting!
Categories
Discovery Dish – S-Band Feed
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
Categories
CAS-11 info
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:
- HF/UHF – H/U Mode Linear Transponder, with a bandwidth of 15kHz downlink centered at 435.505 MHz, EIRP 24 dBm
Uplink 21.320 MHz +/- 7.5 kHz. - VHF/UHF – V/U Mode Linear Transponder, with a bandwidth of 30kHz downlink centered at 435.540 MHz, EIRP 24 dBm.
Uplink 145.860 MHz +/- 15 kHz. - VHF/UHF – V/U Mode FM Transponder, downlink at 435.600 MHz, EIRP 24 dBm
Uplink at 145.925 MHz - VHF/UHF – V/U Mode digital store-and-forward Transponder, downlink at 435.700 MHz, EIRP 24 dBm
Uplink at 145.895 MHz - UHF – CW Telemetry Beacon and
- UHF telemetry beacon using AX.25 4.8k/9.6kbps GMSK at 435.570 MHz, EIRP 23 dBm.
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.
Updated link 2024-12-12:
Windows software for decoding telemetry is available at:
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.]