Tag Archives: Telemetry

A sign from PRATHAM

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It took a couple of days but finally a sign from PRATHAM on 145.980. The signals are weak but you can decode the signals. Now lets try to received the AFSK 1200 signals when the satellite is over there second ground-station in France.

pratham-cw-reception

The identification on 145.980 is:

VU2BUG PRATHAM IIT BOMBAY STUDENT SATELLITE
VU2BUG PRATHAM IIT BOMBAY STUDENT SATELLITE
VU2BUG PRATHAM IIT BOMBAY STUDENT SATELLITE
VU2BUG PRATHAM IIT BOMBAY STUDENT SATELLITE

Fingers crossed that the satellite will also become active on 437.455 with 1200bd AFSK.

A surprise from ALSAT-1N

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It is always nice to see some information in the telemetry from one of the satellites. Here a welcome from ALSAT-1N that was launched with a PSLV on mission C35.

Greetings from ALSAT-1N

The data was received september 30th 2016 at 10:58:28 UTC.

Lonestar-2 Launched

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Lonestar-2 (AggieSAT-4 and BEVO-2) Launched from the International Space Station.

AggieSAT-4-Launched-29012016

AggieSAT-4-after-launch

Source: Tim Peak on Flickr

It was only on the fifth pass that I could receive signals from AggieSAT-4 on 436.250 MHz. Data is send with 9600 baud FSK and decoded with the help of UZ7HO HS sound-modem software.

AggieSAT4-TLM-RX

   1 > C0 00 57 48 32 58 47 4E 6C 09 00 00 24 0E D8 0E DB DC 00 DB 
  21 > DC 00 02 00 03 00 6A 02 02 00 01 00 02 00 00 00 00 00 00 00 
  41 > 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
  61 > 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
  81 > 00 00 00 00 00 00 00 00 00 00 08 20 80 3A 00 00 00 00 00 00 
 101 > DB DC 7F 00 00 DB DC 7F 00 00 DB DC 7F 37 0D 01 07 13 00 00 
 121 > 00 68 68 68 68 DE 45 C0 
 WH2XGN

At the moment if you want to receive AggieSAT-4, you can use the TLE data from ISS. The coming days a NORAD ID will be announced and this object will get his own TLE data.

0 LONESTAR
1 41313U 98067HP  16030.33672022 -.00000484  00000-0  00000+0 0  9993
2 41313  51.6476  30.4721 0005403  89.0857 271.0404 15.54324811    90

More information on AggieSAT-4 and the Texas A&M University can be found at the following URL: AggieSAT Lab

MCubed-2 active again

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MCubed-2 appears to be alive again! Michigan Exploration Laboratory (MXL)is quite surprised and excited that MC2 is back. There theory was that an SD card failed and shorted out the flight computer. They will download telemetry to see if any additional details can be learned.

Below the data I received at January 06, 2016 in the evening.

MCUBED-2_GSClient.s

Signal strength overview.

MCUBED-2_FieldStrength.s

Decoded the saved kiss data with the help of DK3WN MCubed-2 decoder.

mcubed-2_tlm.s

The data is received with the help of a FUNcube Dongle Pro+, the UZ7HO High-Speed sound-modem and the MCubed-2 Ground station Client. Details can be found at the decoding block diagram page.

LilacSAT Telemetry

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LilacSAT-2 Telemetry 21-11-2015 16:33 UTC

**** 16:55:18, byte_corr = 0
* MESSAGE DEBUG PRINT PDU VERBOSE *
()
pdu_length = 112
contents = 
0000: a0 54 22 00 aa a1 01 0f 0b 15 10 26 01 2f 00 00 
0010: 00 00 02 4b 00 00 00 00 00 03 13 08 18 f8 17 3b 
0020: 39 4e 3a 02 0a 1a c6 09 a2 19 c0 0c 00 00 00 00 
0030: 0d 05 c0 81 00 00 00 6f 0b 08 40 d1 d1 d0 21 01 
0040: 55 01 d9 0e 1e 03 0f 10 ed 00 d2 1e 19 02 14 00 
0050: 15 00 14 00 15 00 ff ff ff ff 16 00 07 00 19 00 
0060: ff ff ff ff ff ff ff 77 98 05 00 00 c6 3d ec 47 
***********************************

**** 16:55:26, byte_corr = 0
* MESSAGE DEBUG PRINT PDU VERBOSE *
()
pdu_length = 112
contents = 
0000: a2 54 3d 00 bb a1 01 0f 0b 15 10 26 16 5f 00 01 
0010: 00 00 02 4b 00 00 00 00 00 03 13 08 19 f8 10 3e 
0020: 2e 4e 3c 02 0a 1a c6 09 a2 19 40 0c 00 00 00 00 
0030: 1d 05 c0 75 00 00 00 70 0c 08 40 d1 d1 d1 21 01 
0040: 55 01 b7 0e e1 03 e9 0f fe 00 d2 1e 25 02 14 00 
0050: 15 00 15 00 15 00 ff 99 2b ef ff 03 28 00 01 00 
0060: 40 00 43 00 7d 02 23 01 00 00 00 00 0a 3e 3c 1d 
***********************************

demod_lilacsat-21112015-1700