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Tema: Dosaaf-85

  1. #1

    Dosaaf-85

    amateur radio transponder activated
    The amateur radio linear transponder (SSB/CW) payload on the Russian satellite DOSAAF-85 (RS-44) has been activated.
    Dmitry Pashkov R4UAB reports:
    DOSAAF-85 / RS-44 under construction
    DOSAAF-85 is a small scientific satellite created by specialists of the company Information Satellite Systems (ISS) Reshetnev and students of the Siberian State Aerospace University (SibSAU) Krasnoyarsk.
    The satellite is named after the 85th anniversary of the Voluntary Society for the Assistance to the Army, Aviation and Navy, the organization responsible for the military training of Soviet youth.
    The DOSAAF-85 satellite is designed to provide amateur radio communications, as well as to develop promising technologies. This is the third satellite that was created by specialists of ISS-Reshetnev and is based on the Yubileyniy platform, which features a hexagonal prism structure with body mounted solar cells.
    DOSAAF-95 / RS-44 Antennas, 435 MHz top 145 MHz bottom
    The satellite was launched into orbit on December 26, 2019 from the Plesetsk Cosmodrome and is in an elliptical orbit with a perigee of 1175 km, an apogee of 1511 km and an inclination of 82.5 degrees.
    Transmitter power: 5 watts
    Beacon: 435.605 MHz – transmits CW call sign RS44

    Inverting transponder:
    Earth-to-Space: 145.965 MHz +/- 30 kHz
    Space-to-Earth: 435.640 MHz +/- 30 kHz

    Source Dmitry Pashkov R4UAB whose page also contains the satellite’s TLE, see
    https://tinyurl.com/RussiaR4UAB

    Peter 2M0SQL has added RS-44 to the AMSAT Live OSCAR Satellite Status Page at
    https://www.amsat.org/status/

    Linear Satellite Frequency Summary https://www.amsat.org/linear-satellite-frequency-summary/
    RS-44 Pass Prediction http://amsat.org.ar/pass?satx=rs-44

  2. #2
    Linear Satellite Frequency Summary

    AO-7 Mode A – V/a Non-Inverting Analog SSB/CW
    Uplink USB 145.850 MHz through 145.950 MHz
    Downlink USB 29.400 MHz through 29.500 MHz
    Active only in sunlight. Generally only active when periods of constant sunlight permit the 24 hour timer to switch between Modes A and B or when the satellite switches from Mode B. Beacon 29.502 MHz
    AO-7 Mode B – U/v Inverting Analog SSB/CW
    Uplink LSB 432.125 MHz through 432.175 MHz
    Downlink USB 145.925 MHz through 145.975 MHz
    Active only in sunlight. Beacon 145.975 MHz
    AO-73 (FUNcube-1) – U/v Inverting Analog SSB/CW
    Uplink LSB 435.130 MHz through 435.150 MHz
    Downlink USB 145.950 MHz through 145.970 MHz
    1k2 BPSK 145.935 MHz telemetry. See AMSAT-BB for schedule updates. See FUNcube Data Warehouse for current status. Download FUNcube Telemetry Dashboard software
    FO-29 (JAS-2) – V/u Inverting Analog SSB/CW
    Uplink LSB 145.900 MHz through 146.000 MHz
    Downlink USB 435.800 MHz through 435.900 MHz
    Transponder activated by schedule over Japan and remains active until voltage drops below safe threshold. CW Beacon 435.795 MHz
    XW-2A (CAS-3A) – U/v Inverting Analog SSB/CW
    Uplink LSB 435.030 MHz through 435.050 MHz
    Downlink USB 145.665 MHz through 145.685 MHz
    CW Beacon 145.660 MHz. Digital Telemetry 145.640 MHz 9.6/19.2kbps, GMSK
    XW-2B (CAS-3B) – U/v Inverting Analog SSB/CW
    Uplink LSB 435.090 MHz through 435.110 MHz
    Downlink USB 145.730 MHz through 145.750 MHz
    CW Beacon 145.725 MHz. Digital Telemetry 145.705 MHz 9.6/19.2kbps, GMSK
    XW-2D (CAS-3D) – U/v Inverting Analog SSB/CW
    Uplink LSB 435.210 MHz through 435.230 MHz
    Downlink USB 145.860 MHz through 145.880 MHz
    CW Beacon 145.855 MHz. Digital Telemetry 145.835 MHz 9.6/19.2kbps, GMSK
    XW-2F (CAS-3F) – U/v Inverting Analog SSB/CW
    Uplink LSB 435.330 MHz through 435.350 MHz
    Downlink USB 145.980 MHz through 146.000 MHz
    CW Beacon 145.975 MHz. Digital Telemetry 145.955 MHz 9.6kbps, GMSK
    LO-87 (LUSEX / ÑuSat-1) – U/v Inverting Analog SSB/CW
    Uplink LSB 435.935 MHz through 435.965 MHz
    Downlink USB 145.935 MHz through 145.965 MHz
    Currently active only on certain passes over Europe and South America. 70 mW CW beacon 145.900 MHz
    EO-88 (Nayif-1 / FUNcube on Nayif-1) – U/v Inverting Analog SSB/CW
    Uplink LSB 435.015 MHz through 435.045 MHz
    Downlink USB 145.960 MHz through 145.990 MHz
    Transponder only operational when satellite is in eclipse. FUNcube on Nayif-1 1.2kbps BPSK telemetry 145.940 MHz. Download Nayif-1 Dashboard
    CAS-4A – U/v Inverting Analog SSB/CW
    Uplink LSB 435.210 MHz through 435.230 MHz
    Downlink USB 145.860 MHz through 145.880 MHz
    CW Beacon 145.855 MHz. Digital Telemetry 145.835 MHz 4.8kbps GMSK
    CAS-4B – U/v Inverting Analog SSB/CW
    Uplink LSB 435.270 MHz through 435.290 MHz
    Downlink USB 145.915 MHz through 145.935 MHz
    CW Beacon 145.910 MHz. Digital Telemetry 145.890 MHz 4.8kbps GMSK


  3. #3
    JO-97 (JY1Sat) – U/v Inverting Analog SSB/CW
    Uplink LSB 435.100 MHz through 435.120 MHz
    Downlink USB 145.855 MHz through 145.875 MHz
    Transponder not yet active. BPSK FUNcube telemetry/SSDV 145.840MHz
    FO-99 (NEXUS) – V/u Inverting Analog SSB/CW
    Uplink LSB 145.900 MHz through 145.930 MHz
    Downlink USB 435.880 MHz through 435.910 MHz
    Active by schedule, generally over Japan. See here for operational information. Also uplinks on 145.910 MHz and downlinks on 435.900 MHz and 437.075 MHz for additional transceivers, including camera system.
    JAISAT-1 – V/u Inverting Analog SSB/CW
    Uplink LSB 145.935 MHz through 145.965 MHz
    Downlink USB 435.935 MHz through 435.965 MHz
    Currently in commissioning with 435.700 MHz 4k8 GMKS Mobitex beacon. Operational 4k8 GMSK Mobitex beacon planned for 435.325 MHz
    CAS-6 – U/v Inverting Analog SSB/CW
    Uplink LSB 435.270 MHz through 435.290 MHz
    Downlink USB 145.915 MHz through 145.935 MHz
    In commissioning. CW Beacon 145.910 MHz. 4.8k GMSK telemetry 145.890 MHz.
    HuskySat-1 – V/u Inverting Analog SSB/CW
    Uplink LSB 145.910 MHz through 145.940 MHz
    Downlink USB 435.810 MHz through 435.840 MHz
    Completing science mission before activation for amateur use. 1k2 BPSK telemetry 435.800 MHz. 1 mbps BPSK telemetry 24029.00 MHz.
    RS-44 – V/u Inverting Analog SSB/CW
    Uplink LSB 145.935 MHz through 145.995 MHz
    Downlink USB 435.610 MHz through 435.670 MHz
    CW Beacon 435.605 MHz
    QO-100 (Es’hail-2/P4A) – S/x Non-Inverting Analog SSB/CW
    Uplink USB 2400.000 MHz through 2400.500 MHz
    Downlink USB 10489.500 MHz through 10490.000 MHz
    Geostationary at 25.9 degrees east. Also digital wideband transponder: Uplink 2401.500 Mhz – 2409.500 MHz, Downlink 10491.00 MHz – 10499.00 MHz. See bandplan at https://amsat-dl.org/en/neuer-qo-100-bandplan/
    RadFxSat-2 (Fox-1E) – Launches on ELaNa XX – NET 2Q 2020
    Uplink LSB 145.860 MHz through 145.890 MHz
    Downlink USB 435.760 MHz through 435.790 MHz
    Launches on ELaNa XX – VirginOrbit LauncherOne Flight 2. 1.2kbps BPSK telemetry 435.750 MHz
    CAS-5A H/t – Launch Unknown
    Uplink USB 21.385 MHz through 21.415 MHz
    Downlink USB 29.475 MHz through 29.505 MHz
    CW Beacon 29.465 MHz.
    CAS-5A H/u – Launch Unknown
    Uplink LSB 21.3925 MHz through 21.4075 MHz
    Downlink USB 435.5175 MHz through 435.5325 MHz
    CW Beacon 435.570 MHz. 4.8k / 9.6k GMSK telemetry 435.650 MHz.
    CAS-5A V/u – Launch Unknown
    Uplink LSB 145.805 MHz through 145.835 MHz
    Downlink USB 435.525 MHz through 435.555 MHz
    CW Beacon 435.570 MHz. 4.8k / 9.6k GMSK telemetry 435.650 MHz.

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