Add bufsize=0 to Popen for raw FileIO instead of BufferedReader, and
start decoder/stderr threads immediately before sleep+poll so stdout
is read without delay — matching the working pager pattern.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
rtl_fm prints device info, tuning, and errors to stderr but the morse
route only logged these server-side. Now stderr lines are forwarded to
the morse queue as info events, displayed in a compact diagnostic log
below the scope canvas. After 10s with no audio data, the scope text
escalates to prompt the user to check the SDR log.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Enable direct sampling (-D 2) for RTL-SDR at HF frequencies below 24 MHz
so rtl_fm can actually receive CW signals. Add startup health check to
detect immediate rtl_fm failures. Push stopped status event from decoder
thread on EOF so the frontend auto-resets. Add frequency placeholder and
help text. Fix stop button silently swallowing errors.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
validate_frequency() defaults to 24-1766 MHz (VHF/UHF range), but Morse/CW
operates on HF bands (0.5-30 MHz). Pass explicit min/max to allow HF frequencies.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Add synchronous startup verification after Popen() — sleep 0.5s and poll
the process before returning to the caller. If SatDump exits immediately
(missing device, bad args), raise RuntimeError with the actual error
message instead of returning status: 'started'. Keep a shorter (2s) async
backup check for slower failures.
Also fix --source_id handling: omit the flag entirely when no serial number
is found instead of passing "0" which SatDump may reject. Change start()
and start_from_file() to return (bool, str|None) tuples so error messages
propagate through to the HTTP response.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
TSCM RF scan now auto-detects HackRF via SDRFactory and uses
hackrf_sweep as an alternative to rtl_power. Also includes
improvements to listening post, rtlamr, weather satellite,
SubGHz, Meshtastic, SSTV, WeFax, and process monitor modules.
Fixes#154
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
New signal mode for decoding Morse code (CW) transmissions via SDR.
Includes route blueprint, utility decoder, frontend UI, and tests.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
- Add pre-flight check for I/Q capture binary before spawning process
- Capture stderr from I/Q process for better error diagnostics
- Sync effective span value back to UI when backend adjusts it
- Use get_tool_path('rx_sdr') in Airspy, HackRF, LimeSDR, and SDRPlay
command builders to support custom install locations
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
- Make stopAprs() async and await backend stop completion before
re-enabling the Start button, preventing race where a late stop
request kills newly started processes
- Add cache-buster param to EventSource URL to prevent browser
SSE connection reuse between stop/start cycles
- Capture aprs_active_device locally in stream_aprs_output so the
old thread's finally block doesn't release a device claimed by
a new session
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Replace hardcoded rtl_fm with SDRFactory abstraction layer so WeFax works
with any supported SDR hardware, matching the pattern used by APRS and
other modes. RTL-SDR direct sampling flag preserved for HF reception.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
The default 1 MHz sample rate was too low for SatDump's meteor_m2-x_lrpt
pipeline, causing NOSYNC and 0.000dB SNR. Bumped to 2.4 MHz (SatDump
recommendation) and wired up the WEATHER_SAT_SAMPLE_RATE config value
so it actually gets passed to decoder.start() from both the auto-scheduler
and manual start route.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Fix silent failure when starting without station/frequency selected by
flashing amber on status text and dropdowns. Add auto-capture scheduler
that uses fixed UTC broadcast schedules from station data to
automatically start/stop WeFax decoding at broadcast times.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Implement HF radiofax decoding with custom Python DSP pipeline
(rtl_fm USB → Goertzel/Hilbert demodulation), 33-station database
with broadcast schedules, audio waveform scope, live image preview,
and decoded image gallery. Amber/gold UI theme for HF distinction.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
The shared audio queue (maxsize reduced from 80 to 20) was not flushed
when the monitor frequency changed — only when the monitor was disabled.
This caused up to 4 seconds of stale old-frequency audio to play after
clicking to tune, making click-to-tune appear non-functional.
Now flushes the queue whenever the VFO frequency changes, so audio at
the new frequency begins within ~50ms (one FFT frame).
Two root causes for the waterfall/monitor lockup when scrolling past the
2.4 MHz RTL-SDR span:
1. safe_terminate() sent SIGKILL but never called wait(), leaving a
zombie process that kept the USB device handle open. The subsequent
capture restart failed the USB probe and the monitor could not use
the shared IQ path, falling back to a process-based monitor that
stole the SDR from the waterfall.
2. When the frontend created a new WebSocket after a failure, the old
handler's finally block called _set_shared_capture_state(running=False)
which could race with the new handler's running=True, making the
shared monitor path unavailable. Added a generation counter so only
the owning handler can clear the shared state.
Smittix