Tag Archives: Telemetry

Fox Telemetry Decoder

Posted on by

Fox Telemetry Decoder Software Version 1.0 is Available for Download.

I downloaded the software to see if everything is working. I did some testing an debugging on my side. Except of the audio monitor function I got everything working with the help of the available AF and IQ recordings. The software is looking great and I am ready to received and decode the FOX satellites.

FoxTelem

Version 1.0 of the FoxTelem software, the Fox Telemetry Decoder is being
released to enable setup, testing, and debugging of your Fox-1A ground
station prior to the launch of the satellite. FoxTelem is used to
demodulate, store and analyze telemetry data from AMSAT’s Fox series of
Cube Sats.

Fox-1 satellites include two telemetry formats:

  • Slow Speed, also called Data Under Voice (DUV) is 200 bps FSK data
    sent at the same time as the transponder audio. Whenever the trans-
    mitter is on, data is being sent. This happens during beacons and
    during live QSOs.
  • High Speed is 9600 bps FSK sent instead of the transponder. This is
    used for data intensive experiments such as the Virginia Tech Camera.
    This is only active when commanded from the ground. You can recognize
    High Speed because it sounds like an old school computer modem.

FoxTelem will receive and store both formats assuming you can feed it audio
that does not have the frequencies below 200 Hz filtered. For High Speed,
the audio must also extend to include the full 9600bps bandwidth of the FM
signal. For both modes this is best achieved from a Software Defined Radio
or from the 9600 bps packet port of some radios. The FoxTelem User Guide
provides more details.

Source: FoxTelem Software for Windows, Mac, & Linux

XW-2 (CAS3) launched and active

Posted on by

XW2-2 (CAS3) Satellites launched and active.

I was able to decode FSK signals after analyzing the recorded IQ data, real-time CW and heard some signals on the transponders.

from BJ1SG to CQ: 
   1 > EB 90 6A 5E B9 8F 57 54 54 21 2D 65 80 CF B4 5B 70 56 56 4E 
  21 > 4E 4C 4D 00 38 00 00 00 05 00 00 00 5C 00 00 00 06 00 03 0C 
  41 > 03 18 03 25 03 34 03 20 03 0C 02 FD 02 EE 02 94 02 26 01 F4 
  61 > 03 E8 03 20 03 20 03 0C 00 67 4C 00 60 95 AA AA AA AA AA AA 
  81 > AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA 
 101 > AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA 
 121 > AA AA AA AA AA AA AA AA

from BJ1SF to CQ: 
   1 > EB 90 69 62 B7 96 58 57 57 21 16 65 40 E5 AB 5D 78 58 58 4D 
  21 > 50 4C 4D 00 38 00 00 00 00 00 00 00 5C 00 00 00 01 00 03 0C 
  41 > 03 18 03 25 03 34 03 20 03 0C 02 FD 02 EE 02 94 02 26 01 F4 
  61 > 03 E8 03 20 03 20 03 0C 00 57 7B 00 49 A0 AA AA AA AA AA AA 
  81 > AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA 
 101 > AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA 
 121 > AA AA AA AA AA AA AA AA
BJ1SG DFH XW2 XW2 AAAA IVBI KF6I AIN4 ITDU URVU 6ICK ANIM 6UI6 I64E 4E4E 4ETT TTTT TTTT TFN4 TTTT 4CT4 6KKM 6EEH DDDD DDDD DDDD DDDD DDDD CAMSAT CAMSAT

BJ1SG DFH XW2 XW2 AAAA IUAF KF6M AIN4 4FEI URNC .... IA4D RAI6 I6IC ..UA VBTT TTTT TTTT TKN4 TTTT 4CT4 6KKM DDDD DDDD DDDD DDDD DDDD DDDD CAMSAT CAMSAT 
BJ1SG DFH XW2 XW2 AAAA ..BI KFKT AIN4 ITET URAU 6ITK NK4E RUI6 I64C 4F4B 4CTT TTTT TTTT TTN4 TTTT 4CT4 6K4M DDDD DDDD DDDD DDDD DDDD DDDD CAMSAT CAMSAT
BJ1SG DFH XW2 XW2 AAAA IRBC KBKI AINK IUE4 URN6 64CK BM6V UVIM IM4E IT4C 4ETT TTTT TTTT TMN4 TTTT KBT4 IK4M DDDD DDDD DDDD DDDD DDDD DDDD CAMSAI CAMSAT
BJ1SF DFH XW2 XW2 AAAA IUBC KBKI AINK IUEI URUM 6IMK AMIA KVIM IM4F 4E4E 4FTT TTTT TTTT TUN4 TTTT KBT4 IKIT DDDD DDDD DDDD DDDD DDDD DDDD CAMSAT CAMSAT

BJ1SE DFH XW2 XW2 AAA RTT RUR RUR RUV TMT R6I RNT RUR TTT RKM TIU FAR TTT TTT FET TTT TTI TTT TTT K4K VTT CAMSAT CAMSAT
BJ1SD DFH XW2 XW2 AAA RTT RUT RUT RUI TNV R6V RMN RUR TTT RKI TIT EUR TTT TTT EDT TET TTT TTT TTT 6VK VTT CAMSAT CAMSAT

XW-2-CAR-CW-TRSP