The .btn, .btn-sm, and .btn-ghost classes used by morse mode buttons
(TXT, CSV, Copy, Clear) were defined in core/components.css but the
stylesheet was never loaded in index.html, causing unstyled buttons.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
When the stop POST timed out (5s), lifecycle was set to 'idle' on error,
allowing checkStatus to see running=true and reconnect SSE. Now:
- stop .then() stays in 'stopping' on timeout/error instead of going idle
- checkStatus skips reconnect when lifecycle is 'stopping' post-timeout
but still transitions to idle when server confirms running=false
- LOCAL_STOP_TIMEOUT_MS raised from 5s to 12s to match server cleanup time
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
The previous stopPromise guard only prevented new polls from being
dispatched. Polls already in-flight before stop was clicked could still
return with running=true and override the stopping lifecycle, causing
SSE reconnection and an apparent restart loop. Add a second guard in
the .then() handler to check stopPromise/lifecycle before acting.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Guard checkStatus() against in-flight stop to prevent status poller
from overriding stopping state and reconnecting SSE. Lower SNR floor
from 1.3 to 1.15 to accommodate weaker CW signals. Add SNR/noise_ref
to scope events and metrics for real-time threshold debugging.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Widen noise detector offset from ±100Hz to ±200Hz to reduce spectral
leakage into the noise reference, and scale threshold_multiplier for
SNR space (2.8 → 1.54) so real CW signals reliably trigger tone
detection instead of producing all-E's at 60 WPM.
Fix misleading "decoder startup" timeout message on stop requests and
increase stop timeout from 2.2s to 5s.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
The previous magnitude-based threshold couldn't distinguish CW tone from
AGC-amplified inter-element silence — the Goertzel level stayed above
threshold permanently, preventing any tone OFF transitions and thus zero
character decodes.
Switch tone detection to use SNR (tone_mag / adjacent_band_noise_ref).
Both bands are equally amplified by AGC, so the ratio is gain-invariant.
Also replace the conditional noise_ref guard with unconditional blending
so the noise floor tracks actual ambient levels continuously.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Filter decoder-thread 'stopped' status events that race with the route
lifecycle, causing the frontend to drop back to idle on first start.
Pull noise floor upward using adjacent-frequency Goertzel reference when
warmup calibration runs before AGC converges, preventing permanent
tone-on with zero character decodes.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
The multimon-ng MORSE_CW decoder never reliably decoded characters.
Switch live decode to use the existing morse_decoder_thread() which
wraps MorseDecoder with Goertzel tone detection, adaptive thresholds,
and proper timing estimation — eliminating multimon-ng, PTY plumbing,
and the relay thread from the CW pipeline entirely.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Step-by-step instructions for running multiple RTL-SDR dongles:
serial burning, udev symlinks, USB power, and Docker passthrough.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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>
BufferedReader.read(n) on non-interactive streams (Python 3.14) blocks
until the full n bytes accumulate, starving the decoder of real-time
PCM data. Use os.read() on the raw file descriptor instead, which
returns as soon as any data is available. Falls back to .read() for
file-like objects without fileno() (e.g. BytesIO in tests).
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Replace select.select()+os.read() with a blocking reader thread feeding
a queue, matching pager's working pattern. The select() approach fails
to detect available data on Python 3.14's BufferedReader-wrapped pipes.
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>
Replace blocking rtl_stdout.read() with select()+os.read() so the
decoder thread emits diagnostic heartbeat scope events when rtl_fm
produces no PCM data (common in direct sampling mode). Add waiting-state
rendering in the scope canvas and hide the generic placeholder/status
bar for morse mode.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Add automatic gain control (AGC) before Goertzel processing to normalize
quiet audio from direct sampling mode where the -g gain flag has no effect.
Fix broken adaptive threshold bootstrap by adding a 50-block warm-up phase
that collects magnitude statistics before seeding noise floor and signal peak.
Lower threshold ratio from 50% to 30% for better weak-CW sensitivity.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
The -D flag is only available in newer rtl_fm builds. Docker and distro
packages use the older -E direct / -E direct2 flags instead, which are
universally supported.
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>
Resolved conflict in static/js/modes/weather-satellite.js:
- Kept allPasses state variable and applyPassFilter() for satellite pass filtering
- Kept satellite select dropdown listener for filter feature
- Adopted upstream's optimistic stop() UI pattern for better responsiveness
- Kept optional chaining (pass?.trajectory) since drawPolarPlot can receive null
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
