Inmarsat AERO satellite decoder for Android tablets and phones.

Decode live Inmarsat AERO signals using an RTL-SDR dongle via USB OTG.

• https://sarahsforge.dev/products/pocketaero

• 10500 bps ACARS text — flight IDs, positions, weather reports, CPDLC messages
• 8400 bps C-channel — call progress tracking, AMBE voice decoding with AAudio output
• 1200 / 600 bps P-channel — system tables, logon/logoff events, T/C-channel assignments, voice-follow
• MSK and OQPSK demodulation — ported JAERO DSP pipeline
• Full waterfall spectrum — 4096-bin FFT with drag-to-tune, zoom, and color schemes (viridis / turbo / grayscale)
• Constellation plot — live IQ scatter plot from the active demodulator
• WAV IQ recording — save raw or decimated IQ for offline analysis
• Dark / light theme — OLED-friendly dark mode
• USB wake lock — screen stays on during monitoring
• Version check — automatic update notification on startup
• Bias tee — software toggle for powered LNAs/filters

• Android 8.0+ (API 26+)
• RTL-SDR dongle (RTL2832U) via USB OTG
• ARM64 (aarch64) tablet or phone

cd PocketAERO
flutter pub get
flutter build apk --release

1. Plug RTL-SDR dongle into tablet via USB OTG adapter
2. Connect antenna tuned for L-band (1525–1559 MHz)
3. Launch PocketAERO
4. Tap CONNECT, grant USB permission
5. Select baud rate (600/1200 for P-channel, 10500 for ACARS, 8400 for voice)
6. Tap DECODE ON

PocketAERO builds on the work of:

• JAERO by Jonathan Olds — the original AERO demodulator and AeroL frame decoder
• inmarsat-sniffer — thin C wrapper providing the jaero_dsp port used in this project
• librtlsdr — RTL-SDR driver library
• mbelib — AMBE vocoder for voice decoding
• libaeroambe — AERO-specific AMBE deinterleave tables (rW/rX)

GNU General Public License v3.0 — see LICENSE