IARU Amateur Satellite Frequency Coordination
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IARU Amateur Satellite Frequency Coordination |
| Lilium-4 | Updated: 01 Feb 2026 | Responsible Operator | Randson Huang BV2DQ | |
| Supporting Organisation | National Formosa University | |||
| Contact Person | Bv2dq.tw@gmail.com.nospam | |||
| Headline Details: A 6U CubeSat. Callsign: BN0YCA with APRS Digipeater Service: Provides a 1200bps AX.25 relay on 145.825 MHz for global amateur intercommunication. Also active on UHF 437.850MHz while telemetry data inactive. Optical Visibility Investigation: A student-led study of space-to-ground optical signal acquisition using an onboard modulated beacon. S-Band Telemetry: High-bandwidth downlink at 2405.0 MHz for students to monitor optical payload performance and learn S-band link management. GNSS Reference: Uses the L1 1575.42 MHz signal to provide positioning and clock synchronization for all amateur radio payloads. Public Participation: Encourages the amateur community to decode unencrypted telemetry and participate in link-budget validation. Proposing a VHF downlink for APRS, a UHF downlink for telemetry using 1k2 AFSK with AX25 and an S Band downlink using 2 Mbps GFSK. Planning a SpaceX launch from Vandenberg NET mid March 2026 into a 510 km polar orbit. **Coordination has been provided as follows: for the telemetry 437.850 MHz, for APRS 145.1825 MHz and for the V/U repeater 145.980 MHz uplink and 435.250 MHz downlink** | ||||
| Application Date: | 28 Dec 2025 | Freq coordination completed on | 31 Jan 2026 | |
The IARU Amateur Satellite Frequency Coordination Status pages are hosted
by AMSAT-UK as a service to the world wide Amateur Satellite Community
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