Xatcobeo has its downlink in the UHF radio amateur band. Any ham radio amateur with the appropiate equipment can receive its beacons and TM frames.

Latest TLE

To be confirmed, but we are tracking object 2012-006F with good results: 

2012-006F                
1 38082U 12006F   12054.02764552  .00034536  00000-0  92775-3 0   291 
2 38082  69.4841 217.2088 0777516  32.2720 332.3574 14.05841791  1347

Frequency and modulation

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.

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)....

TM frames with live HK

 Xatcobeo may transmit five frames with all the telemetry values of the satellite at the moment of transmission. Each frame has 40 bytes structured as follows:

Frame 1

Frame 2

Frame 3

Frame 4

Frame 5