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From: kwiik@hila.hut.fi (Kaj Wiik)
Newsgroups: rec.ham-radio,rec.ham-radio.packet,sci.space
Subject: RadioM1/Rudak2
Keywords: RS14 Satellite
Message-ID: <1990Nov11.215319.4242@santra.uucp>
Date: 11 Nov 90 21:53:19 GMT
References: <367@ka2qhd.UUCP>
Sender: news@santra.uucp (Cnews - USENET news system)
Reply-To: kwiik@hila.hut.fi (Kaj Wiik)
Organization: Helsinki University of Technology, FINLAND
Lines: 200

SB AMSAT @ ALL < RK3KP $03B004RK3KP
RadioM1/Rudak2
R:901103/0935z @RK3KP  [NORD><LINK MOSCOW, TheBox 1.6 OP: RA3APR]

de RK3KP @ RK3KP

 
                
                
                      RADIO-M1/RUDAK-2
                      ================
     
        The joint work of AMSAT-U and AMSAT-DL for creating the
        set of equipment for the satellite RADIO-M1/RUDAK-2 is
        completed.
                
        The idea of the cooperation between two groops in the
        USSR and Germany appeared in the spring 1989. The discussion
        about what and how it is necessary to do lasted till the meeting
        of the representatives of two groops in Surrey in July 1989 when
        the mutual preliminary agreement about the cooperation was
        signed.
                
        The final version of the agreement about the cooperation
        was signed in the autumn 1989, when the work over the project
        was being done.
        According to the mutual agreement the group ORBITA AMSAT-U
        develops and makes the linear transponder, command radio link,
        telemetry system, power supply system and decides all the
        questions with the official organisations about the placing of
        the equipment and launching.
        The RUDAK group of AMSAT-DL developes and makes the digital
        part so called RUDAK-2. This part includes a digipeater and a
        mailbox (protocol AX-25).It also provides other possibilitys
        for the experiments on the  transmitting  of the information
        using modern digital methods.  It also contains input and
        output RF circuits.
        The complete set for ground command station is developed
        by Amsat-U-Orbita and Amsat-U-Sputnik groups.Rudak group
        brings special  digital part for it.
        During the launch and orbital test period ground command
        station will be situated in Molodechno at UC1CWA and in
        Moscow at RK3KP. The ground command station for Rudak-2
        only will be situated near Munchen-DK1YQ and near
        Hannover-DB2OS.
 
 
        The final agreement was signed:
        from the side of AMSAT-U-ORBITA  the technical director of
        the project "RADIO-M1" - V.Chepyzhenko  - RC2CA;
        from the side of AMSAT-DL - the president of it K.Meinzer -
        DJ4ZC.
        The coordinators of the project are P.Guelzow - DB2OS and
        L.Labutin - UA3CR
                     
     
     
                 SPECIFICATIONS OF THE RADIO-M1/RUDAK-2
                 ______________________________________
     
     
          Mission
          -------
     
        Piggy-back onboard the USSR geological research
        satellite.
                  
     
          Launch and Orbit
          ----------------
     
     1. Launch (scheduled)
        Time:         Late of 1990, day is not fixed.
        Launch site:  North Cosmodrom Plesetsk
                      
     2. Orbit (planned)
        slightly elliptical polar orbit
        appogee:      1000 km
        Inclination:  83 degrees
        Period:       105 minutes
     
     
          Satellite specifications
          ------------------------
     
     1. Dimension and shape
        Cylinder of hight about 4   meters
                     diameter   1.8 meters
     
     2. System configuration
        Professional geological research equipment, telemetry
        system, command link equipment, transponders and power
        supply, thermal control.
        Amateur linear and digital transponders, telemetry
        system, command link equipment, power supply.
     
     3. Attitude control
        Satellite attitude will be maintained by the earth's
        gravity field by a rod 9 meters length pointing away
        from the earth.
     
     4. Planned service life: 3 years
     
     
          Radio-M1/Rudak-2 System specifications
          --------------------------------------
   
     1. System configuration
        Two sets of the equipment will be installed aboard the satellite:
        Linear transponder #1 mode B and RUDAK-2 with subsystems
        Linear transponder #2 mode B with subsystems
        The first set is concidered to be the main. The second one is
        reserve. It can be taken into operation in the case of
        failure of the first one.
     
     2. Commands
     
        Equiped with real-time program command function
     
     3. Beacons and telemetry #1 set
        CW telemetry 8 channels         145.822 MHz   0.2 Watts
        Digital telemetry 30 channels   145.952 MHz   0.4 Watts
                                        1100 bps,BPSK/FM, deviation 2kHz
        Digital telemetry Rudak-2       145.983 MHz   3.0 Watts
                                        BPSK 1200 bps AX.25 (like FO-20)
     
     4. Beacons and telemetry #2 set
        CW telemetry 8 channels         145.948 MHz   0.2 Watts
        Digital telemetry 30 channels   145.838 MHz   0.4 Watts
                                        1100 bps,BPSK/FM, deviation 2kHz
        Digital telemetry 30 channels   145.800 MHz   2.0 Watts
                                        1100 bps BPSK/FM, deviation 2kHz
     
     5. Transponders #1 set
    
    (1) Linear transponder: inversely heterodined translator
        Uplink passband             435.102 to 435.022 MHz
        Downlink passband           145.852 to 145.932 MHz
        Transmitter output max      10 Watts
        Bandwith  (3db)             80 kHz
        Uplink EIRP required about  100 Watts
     
    (2) Digital transponder Rudak-2: digipeater and store&forward
        packet communication (AX.25), telecommunications experiment
        with   digital  signal  processing  up  to  nearly  20 kHz,
        1 MByte RAM disc, four separate uplink channels.
        
        Uplink frequencies: RX-1  435.016 MHz 1200bps,FSK,NRZIC/Biphase-M
                            RX-2  435.155 MHz (AFC) 2400 bps,BPSK, Biphase-S
                            RX-3a 435.193 MHz (AFC) 4800 bps,RSM
                            RX-3b 435.193 MHz (AFC) 9600 bps,RSM
                            RX-4  435.041 MHz (digital AFC) RX for RTX-DSP
        
        Downlink frequency:       145.983 MHz     3 Watts
        
        The downlink can be switched to the following operating modes:
        Mode 1: 1200 bps, BPSK, NRZI,(NRZ-S) (like FO-20)
        Mode 2:  400 bps, BPSK, Biphase-S (Oscar-13 beacon)
        Mode 3: 2400 bps, BPSK, Biphase-S
        Mode 4: 4800 bps, RSM, NRZIC (Biphase-M) (like 4800 bps uplink)
        Mode 5: 9600 bps, RSM, NRZI (NRZ-S) +Scrambler (like 9600 bps uplink)
        Mode 6: CW keying (only for special events)
        Mode 7: FSK (F1 or F2B),e.g. RTTY, SSTV, FAX, etc.(for special events)
        Mode 8: FM modulated by D/A signals from DSP-RISC processor (speech)
 
     
     6. Transponder #2 set
     
        Linear transponder: inversely geterodined translator
        Uplink passband             435.123 to 435.043 MHz
        Downlink frequencys         145.866 to 145.946 MHz
        Transmitter output max      10 Watt max.
        Bandwith  (3db)             80 kHz
        Uplink EIRP required about  100 Watts
                
     7. Antennas
     
    (1) 435 MHz receiving antenna (shared by analog and digital modes):
        Helix  +3 db max RHCP.
                                            
    (2) 145 MHz transmitting antenna:
        Half wave dipol
 
     8. Power supply
        
        From main power supply system up to 100 Watts
        Set #1 consumption  47 Watts
        Set #2 consumption  40 Watts
     
     9. Weight
     
        Set #1 approx.  28 kg
        Set #2 approx.  22 kg
     
    10. Size:  480x400x300 mm^3 each set.
     
 -----------------------------------------------------
     
 03.11.90      __ ends____                  de UA3CR
/EX