Transporter-16 Rideshare: VSFB SLC-4E : 2026-03-30 11:02 UTC

Satellites & Observations Launches
2

LILIUM-4 acts as a spaceborne relay for the Amateur Radio Automatic Packet Reporting System (APRS). It is designed to be interoperable with existing ARISS (International Space Station) standards.

  • Downlink Frequency: 145.825 MHz

  • Protocol: AX.25

  • Data Rate: 1200 bps AFSK

  • Satellite Call Sign: BN0YCA

  • Supported Paths: ARISS, WIDE2-1

  • Digipeater Logic: * Responsive to both its unique call sign (BN0YCA) and the generic ARISS alias.

    • Config: PATH1=ARISS,1; PATH2=WIDE2,1.

2. UHF Telemetry & Secondary Digipeater

The UHF subsystem serves as the primary health-monitoring link and provides a backup digipeater capability during periods of low telemetry activity.

  • Center Frequency: 437.850 MHz

  • Protocol: AX.25

  • Modulation: 1k2 AFSK

  • Operational Note: When telemetry is not being actively transmitted, the UHF digipeater remains enabled for amateur use.

3. High-Speed S-Band Downlink

This link is used for high-bandwidth data transfer and as a high-speed telemetry backup.

  • Center Frequency: 2405 MHz (2.4 GHz ISM Band)

  • Modulation: GFSK

  • Initial Data Rate: 100 kbps

  • Variable Rates: Ground-commandable up to 1 Mbps or 2 Mbps depending on link margin and mission requirements.

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