Multi-Mode Standard Transponder (MST)

Affordable, Compact S-Band Transponder

The Multi-Mode Standard Transponder (MST) provides compatibility with a variety of government and commercial telemetry and command formats in a single unit at an affordable price. Available receive modes include NASA’s Tracking and Data Relay Satellite System (TDRSS), NASA’s traditional Spaceflight Tracking and Data Network (STDN) ground network format, Air Force Satellite Control Network (AFSCN) Space-Ground Link System (SGLS) and Unified S-Band (USB), and a direct carrier BPSK mode compatible with commercial services and the NASA Ground Network (GN). Available transmit modes include PN spread modes compatible with the NASA TDRSS in addition to OQPSK/ SQPSK, QPSK, BPSK and linear phase modulation modes.

  • Mission ready: Five different models support a wide range of customer requirements
  • Secure: Compatible with commercial and NSA certified encryption products
  • Flexible: Customer specific requirements and options are available
  • Proven: Providing reliable earth-to-spacecraft and spacecraft-to-spacecraft communications for more than 50 years

Features

The Multi-Mode Standard Transponder (MST) uses modern integrated circuit technology for reduced size and cost. In addition to telemetry and command applications, a pair (or more) of transponders can be configured for proximity link or crosslink applications. Operating modes are configured at manufacture via firmware. Customization is available for unique applications.

Receiver Features

  • Operating modes include:
    • TDRSS
    • Direct Carrier BPSK
    • BPSK Modulated Command Subcarrier Linearly Phase Modulated on the Carrier
    • SGLS/AFSCN including Ternary FSK
    • Multiple Mode Operation Available in a Single Unit
  • Noise Figure: < 2.5 dB ambient; 2.8 dB hot
  • Frequency Stability: < 0.5 ppm, 0 to +50º C
  • Operating Frequency: USB = 2025 to 2120 MHz, SGLS = 1760 to 1840 MHz
  • Acquisition:
    • TDRSS: Doppler Compensated
    • GN: Ground Sweep or Auto-acquisition

Transmitter Features

  • PN Spread Modes are Compatible with TDRSS
  • BPSK, QPSK, Linear Modulation and Subcarrier Modulation Modes
  • Frequency Stability: < 0.5 ppm,0 to +50º C
  • Operating Frequency: 2200 to 2300 MHz
  • Digital Filtering for Spectral Containment

Specifications

 

Multi-Mode Standard Transponder (MST) Data Sheet

 

 

View Data Sheet For All Models

 

Receiver Operating Modes TDRSS
Direct Carrier BPSK
BPSK Modulated Command Subcarrier Linearly Phase Modulated on the Carrier
SGLS/AFSCN including Ternary FSK
Multiple Mode Operation Available in a Single Unit
Size 9.40” x 7.30” x 2.30” (2 Module Integrated Unit)
Weight < 6.0 lbs (2 Module Integrated Unit, including optional 8W PA)
EMI/ EMC MIL-STD-461C
Radiation 100 kRad
Vibration 25 Grms
Shock 3000 G peak, 1300 Hz
Temperature -34º C to +71º C

 

  • Features

    Features

    The Multi-Mode Standard Transponder (MST) uses modern integrated circuit technology for reduced size and cost. In addition to telemetry and command applications, a pair (or more) of transponders can be configured for proximity link or crosslink applications. Operating modes are configured at manufacture via firmware. Customization is available for unique applications.

    Receiver Features

    • Operating modes include:
      • TDRSS
      • Direct Carrier BPSK
      • BPSK Modulated Command Subcarrier Linearly Phase Modulated on the Carrier
      • SGLS/AFSCN including Ternary FSK
      • Multiple Mode Operation Available in a Single Unit
    • Noise Figure: < 2.5 dB ambient; 2.8 dB hot
    • Frequency Stability: < 0.5 ppm, 0 to +50º C
    • Operating Frequency: USB = 2025 to 2120 MHz, SGLS = 1760 to 1840 MHz
    • Acquisition:
      • TDRSS: Doppler Compensated
      • GN: Ground Sweep or Auto-acquisition

    Transmitter Features

    • PN Spread Modes are Compatible with TDRSS
    • BPSK, QPSK, Linear Modulation and Subcarrier Modulation Modes
    • Frequency Stability: < 0.5 ppm,0 to +50º C
    • Operating Frequency: 2200 to 2300 MHz
    • Digital Filtering for Spectral Containment
  • Specifications

    Specifications

     

    Multi-Mode Standard Transponder (MST) Data Sheet

     

     

    View Data Sheet For All Models

     

    Receiver Operating Modes TDRSS
    Direct Carrier BPSK
    BPSK Modulated Command Subcarrier Linearly Phase Modulated on the Carrier
    SGLS/AFSCN including Ternary FSK
    Multiple Mode Operation Available in a Single Unit
    Size 9.40” x 7.30” x 2.30” (2 Module Integrated Unit)
    Weight < 6.0 lbs (2 Module Integrated Unit, including optional 8W PA)
    EMI/ EMC MIL-STD-461C
    Radiation 100 kRad
    Vibration 25 Grms
    Shock 3000 G peak, 1300 Hz
    Temperature -34º C to +71º C

     

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