Callsign

BJ1SI

SDR Uplink

  • Frequency
  • 144.350 MHz
  • Antenna
  • 1/4 wavelength monopole
  • Polarization
  • Linear
  • Protocol
  • For FM repeater
  • Analog voice, no PL
  • For APRS Digi
  • AX.25 UI
  • Modulation
  • For FM repeater
  • FM
  • For APRS Digi
  • 1200 bps AFSK

SDR Downlink

  • Frequency
  • 437.200 MHz
  • Antenna
  • Turnstile
  • Polarization
  • LHCP (Forward, main lobe)
  • RHCP (Backward)
  • Protocol
  • For telemetry
  • CSP
  • CSP + AX.25 UI
  • For FM repeater
  • Analog voice + CSP
  • For APRS Digi
  • AX.25 UI
  • Channel Coding
  • For telemetry
  • (7, 1/2) convolutional + (255, 223) RS
  • For FM repeater
  • (255, 223) RS
  • Modulation
  • For telemetry
  • 1200/9600 bps RRC-BPSK NRZ-M
  • 1200 bps MSK NRZ-M
  • 1200 bps AFSK
  • For FM repeater
  • (Analog + baseband RRC NRZ-M) - FM
  • For APRS Digi
  • 1200 bps AFSK
  • Power
  • 23/27 dBm

FSK TLM Downlink

  • Frequency
  • 437.225 MHz
  • Antenna
  • Turnstile
  • Polarization
  • RHCP (Forward)
  • LHCP (Backward, main lobe)
  • Protocol
  • CSP
  • Channel Coding
  • (7, 1/2) convolutional + (255, 223) RS
  • Modulation
  • 1200/4800 bps GFSK
  • Power
  • 23/27 dBm

Telemetry Decoder

Telemetry Decoder based on GNU Radio

Source Code and GRC flowchart at: https://github.com/bg2bhc/gr-lilacsat

Linux Live CD for Telemetry Decoding

Created with respin-gtk. gr-lilacsat, GRC 3.7.8, gqrx, gpredict, etc. included.
Now we have support for FCDPP, USRP and RTL-SDR. Not hard to edit the GRC flowcharts to support other devices.
It can be burned into a USB stick to boot a computer or run from a virtual machine.

 

Update 20151010 Download

ISO File (Baidu Cloud): http://pan.baidu.com/s/1jGAiTRC

ISO File (Google Drive): https://drive.google.com/file/d/0B4xzC5u2abn2bHRhbk9QYlRfMGc

ISO File Signature (Google Drive): https://drive.google.com/file/d/0B4xzC5u2abn2bHRhbk9QYlRfMGc

ISO File (Dropbox): https://www.dropbox.com/s/hmugzny5hayxv9z/lilacsat-2_livecd_20151010.iso

ISO File Signature (Dropbox): https://www.dropbox.com/s/b3cjxdsvu528o50/lilacsat-2_livecd_20151010.iso.sig

User Manual: http://lilacsat.hit.edu.cn/wp-content/uploads/2015/09/LilacSat-2_Live_CD_User_Manual.pdf

(Great thanks to M6SIG!)

QSL Info