Xatcobeo Telemetry 16-10-2013 20:01 UTC
XATCOBEO 8.17V -135DBM 26C XATCOBEO 8.26V -135DBM 26C XATCOBEO 8.23V -135DBM 27C XATCOBEO 8.25V -135DBM 27C XATCOBEO 8.24V -136DBM 27C
16-10-2013 18:19 UTC
XATCOBEO 8.21V 0DBM 24C XATCOBEO 8.26V 0DBM 24C XATCOBEO 8.24V 0DBM 25C XATCOBEO 8.26V 0DBM 26C XATCOBEO 8.26V -101DBM 26C XATCOBEO 8.26V -106DBM 27C XATCOBEO 8.25V -106DBM 27C
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
SDR image where you can see the different tones of the BPSK signal. Decoding was done with the AFSK modem from UZ7HO.
Here an audio fragment from the BPSK data.
MASAT-1 Telemetry 13-10-2013 19:30 UTC
Below a SDR spectrum with the MASAT-1 data. It first sends CW and afterwards a GFSK signal.
And here a telemetry audio fragment.
With the MASAT-1 Ground station decoder you received raw data in the following format:
PACKET 00 9E 09 02 50 20 13 10 13 19 21 06 13 4B 2A 03 01 00 00 00 00 00 00 00 00\
00 00 00 00 00 00 00 f3718c4d5c87eb8931a747d1cf6421df1e3e57fb 1381691892852
When applying that data to the MASAT-1 decoder made by Mike DK3WN you get the following output.
AENEAS Telemetry 13-10-2013 18:53 UTC
Max elevation 53 degree, azimuth between 237 – 043 degrees.
AENEAS Raw AX25 frames:
1:Fm KE6YFA-1 To CQ Via TELEM [20:54:25R] 4341455255531D0040020009030B0616342837050000001000F075000070130049C062D941F1E1 1:Fm KE6YFA-1 To CQ Via TELEM [20:54:44R] 4341455255531D0040020009030B0616350037050000001000F075000070130049C062D941202F 1:Fm KE6YFA-1 To CQ Via TELEM [20:55:04R] 4341455255531D0040020009030B0616351437050000001000F075000070130049C062D941F6D7 1:Fm KE6YFA-1 To CQ Via TELEM [20:55:24R] 4341455255531D0040020009030B0616352837050000001000F075000070130049C062D9419DD6
AENEAS Decoder output:
AENEAS Beacon Data Decoder, Rev 1.1 Opening file at input.txt AENEAS Beacon TLM Packet found: ---------TELEMETRY-BEGIN---------- Total length: 29 Type:64 Unused: 0x02 0x00 Time: 9/3/11-6-22:52:40 Reboots: 1335 Last Reboot Cause: 0 Flash Status: 0 Bit 0 = 0 : Device is ready. Bit 1 = 0 : Device is NOT write-enabled. Bit3&4= 1 : All sectors software-protected. Bit 4 = 0 : WP is asserted. Bit 5 = 0 : Last op successful. Bit 7 = 0 : Sector Protection Registers unlocked. Payload Write Pointer: 1273856 Telemetry Pointer: 7729152 Radio Status: 73 No detailed Radio info yet Misc Write Pointer: 1104765632 ---------TELEMETRY-END----------
CSSWE Telemetry 13-10-2013 18:33 UTC
Max elevation 70 degree, azimuth between 225 – 043 degrees
Raw Kiss frame:
[271 Bytes KISS Frame (without CRC)]
ctrl: 3 PID: F0 {UI} 252 Payload Bytes
from CQ to CSSWE7:
1 > 42 00 75 F8 D0 E7 2B 71 01 00 E3 47 0E 3E 00 8D 70 5C C3 B8
21 > 19 00 0F 05 F4 7A 00 CE 26 00 10 FF 04 A9 07 00 68 00 1D 00
41 > 00 00 8C 0D 00 82 0C 51 47 00 00 00 00 00 00 C3 06 00 00 00
61 > 00 00 00 00 00 00 10 00 6A 0E DA D5 2B 71 00 CA 25 00 00 FF
81 > 04 A9 06 00 0F 00 00 00 00 00 01 00 00 00 10 2A 2C 00 00 00
101 > 00 00 00 C3 06 00 00 00 00 00 00 00 00 00 0F 00 66 0C 00 CF
121 > 26 08 1A FF 04 A9 07 00 7E 0C 7D 15 A6 0D 96 0E 00 51 80 81
141 > 7D 00 00 00 00 00 00 C3 06 00 00 00 00 00 00 00 00 00 10 00
161 > 70 0E 0A CD 25 00 10 FF 04 A9 06 0A 55 02 40 05 79 04 4D 02
181 > 0A 28 3C 53 4E 0A 00 00 00 00 00 C3 00 00 00 00 00 00 00 00
201 > 00 0A 0F 00 6A 0D 00 10 B9 AB 00 3E 00 00 A3 00 00 93 00 15
221 > 00 00 00 00 00 00 00 00 1C 2C 0A 00 00 50 60 00 44 00 F7 FD
241 > 1B 0A 07 00 32 AF 20 07 A6 56 3A 3C
Telemetry overview:
CSSWE Telemetry Decoder (c) Mike Rupprecht, DK3WN ===================================================== Satellite Mode SAFE | Cmds Since Boot 18403 Time Since Boot 117.0633 days | EPS OK Batt Voltage 8.08 V | Batt Temp 14 dec C Batt Discharge Current 0.00 mA | Batt Charge Current 141.18 mA 5V Bus Voltage 5.00 V | 5V Bus Current 31.37 mA 3.3V Bus Voltage 3.31 V | 3.3V Bus Current 54.90 mA Solar Panel Volt/Curr OK | PVX1 Voltage 0.68 V PVX1 Current 0.00 mA | PVX2 Voltage 10.86 V PVX2 Current 0.00 mA | PVY1 Voltage 0.51 V PVY1 Current 0.00 mA | PVY2 Voltage 10.95 V PVY2 Current 101.96 mA | Solar Panel Temp OK PVX1 Temp 35 deg C | PVX2 Temp -21 deg C PVY1 Temp 29 deg C | PVY2 Temp 46 deg C Radio OK | Radio Temp 16 deg C CDH Temp 14 deg C | GPIO: Battery Heater OFF V GPIO: ADM Resistor OFF V | GPIO: REPTile 3.3V ON A
CUSAT Telemetry 11-10-2013 18:04 UTC using Object B
Max elevation 25 degree azimuth between 158 – 025 degrees.
In the beginning of the pass signals where weak but after all 7 frames decoded. Below is one of the latest. Similar to STRaND-1, switching between RHCP and LHCP gives better results.
2013-10-11 18:16:26.400 UTC: [319 Bytes KISS Frame (without CRC)]
ctrl: 3 PID: F0 {UI} 300 Payload Bytes
from BOTTOM to GROUND:
1 > 00 00 00 00 01 01 00 20 01 00 00 00 B9 08 03 17 A0 EB 40 00
21 > 00 00 00 00 00 00 40 3E 47 3F 11 78 04 10 00 00 00 00 00 00
41 > 00 FC 00 79 00 00 00 00 00 00 00 00 00 B4 79 79 79 79 79 79
61 > 79 79 00 17 0D 17 00 00 00 07 33 34 00 00 00 00 00 00 00 80
81 > 9A E5 40 00 C8 FF FF 01 00 00 00 68 08 02 00 F7 C6 B0 3E E0
101 > 39 3C 00 04 00 00 00 01 00 00 00 00 00 00 00 B8 34 98 03 00
121 > 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
141 > 00 00 00 00 00 00 01 01 01 01 01 01 39 3C 00 01 18 05 00 70
161 > 0E 00 00 7B 09 ED 4F DA 9F EB 40 58 3C 88 4A 2C 05 8B CA 00
181 > 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
201 > 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
221 > 00 00 00 FF FF FF 7F 25 31 F8 00 00 00 00 00 00 00 00 00 00
241 > 00 00 00 FF FF FF FF 44 00 00 FF 00 00 00 00 00 00 A2 42 BD
261 > 97 FF B2 9C 40 B9 C1 AC 1F 00 00 00 66 55 07 60 65 55 07 65
281 > 00 36 33 35 32 00 00 00 00 00 00 00 00 00 00 0C 80 00 00 47
301 >
The complete kiss file can be downloaded at the following location: CUSAT Data.
One thing that keeps me occupied, and that is the tones that the transmitter of CUSAT is using with AFSK AX25 telemetry. See the picture below and watch the line at the beginning of the burst. It puzzles me.
