Category Archives: SWISSCUBE

SWISSCUBE Telemetry 14-10-2013

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SWISSCUBE Telemetry 14-10-2013 13:15 UTC
Max elevation 72 degree, azimuth between 013 – 203 degrees.

And then there are those days when this hobby has a surprise for you, in the past I tried to download SWISSCUBE data but that wasn’t a success. This afternoon the little Cubesat was very strong and I was able to receive and decode the BPSK data.

One of the raw frames:

[241 Bytes KISS Frame (without CRC)]
from HB9EG1-1 to HB9EG1: 
   1 > 38 1C 97 00 08 08 CD 47 00 37 10 03 19 00 26 44 C4 00 61 02 
  21 > 64 4C 40 02 64 4C 23 00 00 00 00 02 64 4C 23 C3 C3 CB CB FE 
  41 > FE A8 A7 FF FD F4 F8 FC 00 2E 10 01 07 72 F9 FE F5 FD DB FE 
  61 > DD 00 00 00 D9 CA 08 08 CD 48 00 19 10 03 19 00 26 44 C4 00 
  81 > 41 F9 05 F8 FF 08 00 00 00 00 00 F0 08 34 34 83 48 F5 08 08 
 101 > CD 49 00 5A 10 03 19 00 26 44 C4 10 11 7E D0 1A 7D F0 1A 7A 
 121 > D1 69 9B 31 71 8B 70 02 89 50 02 7F 90 04 7F 70 03 7B D0 56 
 141 > 80 F0 56 46 55 9B CC D5 89 7F FF FF F7 FE 6D FF 5E FF C4 00 
 161 > 04 00 1D 00 43 01 2C 00 00 00 00 00 F7 F1 F8 F9 F7 00 00 00 
 181 > 00 00 00 07 12 97 00 6B 00 B3 A4 FE 00 8F 44 08 08 CD 4A 00 
 201 > 0E 10 03 19 00 26 44 C4 20 71 F4 F9 F8 20 28 EF B2 02 64 4C 
 221 > 4C

With the help of JA0CAW I can now decode the complete kiss file. Below the tlm output from the de decoder software.

SwissCube Housekeeping Telemetry Decoder   (c) Mike Rupprecht, DK3WN
====================================================================

COM last report time     2507972.00 s       (29d 00:39:32)
ADCS last report time    2507970.19 s       (29d 00:39:30)
CDMS last report time    0
Payload last report time 2507970.19 s       (29d 00:39:30)

Battery 1 Voltage      3.81   V  | Battery 1 redundancy V  3.81  V       
Battery 2  Voltage     3.97   V  | Battery 2 redundancy V  3.97  V       
Battery 1 Temp         -2     °C | Battery 2 Temp          -2    °C      
Digital power bus V    3.28   V  | Analog power bus V      3.26  V       
External Temp          -1     °C | Frame  Temp             -3    °C      
Microcontroller Temp   -12    °C | Board Temp              -8    °C      
Motherboard Temp       -4     °C | Solar cell -X current   0.00  mA      
Solar cell +X current  179.73 mA | Solar cell -Y current   62.52 mA      
Solar cell +Y current  3.91   mA | Solar cell -Z current   27.35 mA      
Solar cell +Z current  445.42 mA | Face -X temperature     -7    °C      
Face +X temperature    -2     °C | Face -Y temperature     -11   °C      
Face +Y temperature    -3     °C | Face -Z temperature     -5    °C      
Face +Z temperature    -2     °C |

Payload                ENABLED   | ADCS                    ENABLED
ADS 1/2 status         OFF       | Payload status          ON
ADCS status            ON        | CDMS status             OFF
Beacon status          ON        | COM status              ON
Payload error flag     OK        | ADCS error flag         OK
CDMS error flag        OK        | COM error flag          OK
EPS error flag         OK        | Spare 2 bits (not used) 0 0
Spacecraft mode        SAFE      | Error code              SUCCESS

SWISSCUBE TLM 14-10-2013

SDR image where you can see the different tones of the BPSK signal. Decoding was done with the AFSK modem from UZ7HO.

SWISSCUBE SDR 14-10-2013 13:15UTC

Here an audio fragment from the BPSK data.