XATCOBEO Telemetry 19-10-2013 18:01 UTC

Xatcobeo transmits in 437.365 MHz , this frequency was coordinated with IARU to avoid interferences with other satellites in the Amateur Satellite Service. The modulation used by the TTC subsystem is FM with FFSK/MSK at 1200bps in the baseband. One cycle of 1200Hz represents a logic ‘1’, one-and-a-half cycles of 1800Hz represents a logic ‘0’. Output RF power is 27 dBm. A Turnstile antenna is used on-board.

XATCOBEO 8.26V 0DBM 21C 
XATCOBEO 8.26V 0DBM 22C 
XATCOBEO 8.26V 0DBM 23C 
XATCOBEO 8.26V 0DBM 23C
XATCOBEO 8.26V 0DBM 24C 
XATCOBEO 8.26V 0DBM 25C 
XATCOBEO 8.26V 0DBM 25C 
XATCOBEO 8.26V 0DBM 26C

CW beacon: Xatcobeo transmits a CW beacon every 75/150 seconds and may transmit housekeeping (HK) frames (see next section) intercalated between beacons if TM is activated. CW is transmitted at 20 WPM as an 800Hz audio on-off keyed signal in FM. CW beacon can contain different parameters: battery voltage (V), signal received (dBm), temperatures (c, Celsius degrees).

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