Reception of Voyager 1 the best DX ever! - UHF-Satcom.com

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• Some basics • Teaming up • Data Mining Overview • Calculations+Simulations • Hardware • Let‘s go! • Results and Outlook Amsat-UK Colloquium 2006 Achim Vollhardt, DH2VA/HB9DUN 2
Some basics • Deep space probes transmit in X-band: 8400-8450 MHz • Biphase PSK modulation • Deep Space Network uses 34&70 m dishes � beyond our capabilities • +- 90 deg modulation would result in <strong>com</strong>plete carrier suppression • Probes use 60 or 70 deg: residual carrier (enhances tracking loop robustness in receiver) • Typical carrier suppressions: -6 or -10 dB • Amateurs CAN receive this constant carrier with small RX bandwidths and small antennas Amsat-UK Colloquium 2006 Achim Vollhardt, DH2VA/HB9DUN 3
Page 1: Reception of Voyager 1 the best DX
Page 5 and 6: • James Miller, G3RUH Pull togeth
Page 7 and 8: Ask the experts ! • Write email t
Page 9 and 10: • Three-axis stabilized s/c • 3
Page 11 and 12: SFOS: space flight operations sched
Page 13 and 14: Standard version: One-way ‘Radar
Page 15 and 16: Transmit side Find out EIRP of spac
Page 17 and 18: • Diameter : 20 m • Efficiency
Page 19: Performance Simulation • G3RUH ge

Reception of Voyager 1 the best DX ever! - UHF-Satcom.com

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