CUSAT Telemetry 11-10-2013

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.

CUSAT SDR 11-10-2013 18:04UTC

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