📡 Wideband Spectrogram

📡 Noise Floor 🌐 Band Conditions ☀️ Space Weather 📊 Aggregate Analysis

Floor: -130

Ceiling: -60

Window:

Scroll to zoom · drag to pan · double-click to reset Loading…

ℹ️ How to read this spectrogram: Each horizontal row = 1 minute of RF spectrum data. The image builds top-to-bottom throughout the day and will be fully populated after 24 hours (1 440 rows). The X-axis shows frequency (0–30 MHz for wideband); the Y-axis shows UTC time, with the most recent data at the bottom. Colour indicates signal strength — from noise floor (cool/dark) to signal peak (warm/bright) — as shown in the legend below. Hover over the image for exact frequency, time, and signal level.

Loading spectrogram…

Band:

Show:

Per page:

Loading gallery…

No thumbnails available yet. Thumbnails are generated at UTC midnight after each complete day.

Time Slice: Track one or more frequencies over time. Add slices below — each is plotted as a separate line. The best data source (per-band or wideband) is chosen automatically.

Date:

Freq (MHz):

BW (kHz):

Label:

⏳ Time Travel: Fly through 24 hours of spectrum data in a 3D perspective waterfall. 0–30 MHz runs left–right; time recedes into the distance. Use the playback controls or drag the scrubber to navigate. Keyboard: Space play/pause · ←/→ step · [/] speed · Home/End jump.

Date:

Band:

Speed:

Band overlays Grid lines Show Stars

--:-- UTC

drag to seek

`GET /api/spectrogram`	Today's PNG (auto-range, Jet palette) — `Cache-Control: max-age=60`, ETag
`GET /api/spectrogram?date=YYYY-MM-DD`	Archived PNG — `max-age=86400`, ETag
`GET /api/spectrogram?palette=plasma&db_min=-110&db_max=-65`	Re-render with explicit palette / dB range
`GET /api/spectrogram/latest`	302 → most recent complete day's PNG (ETag on redirect, `max-age=3600`)
`GET /api/spectrogram/meta`	Today's JSON metadata (db_min/db_max, row count, per-row noise floor)
`GET /api/spectrogram/meta?date=YYYY-MM-DD`	Metadata for a past date
`GET /api/spectrogram/meta/latest`	302 → metadata for the most recent complete day
`GET /api/spectrogram/list`	JSON list of available dates (newest first)
`GET /api/spectrogram/rowspectrum?row=N`	Full spectrum (all bins, dBFS) for row N of today's data
`&date=YYYY-MM-DD`	Row spectrum for a past date
`&rolling=1`	Row spectrum from the rolling 24-hour window

`GET /api/spectrogram/timeslice?freq_hz=7100000&bandwidth_hz=3000`	Signal level at 7.1 MHz ± 1.5 kHz over today
`&date=YYYY-MM-DD`	Specific date
`&rolling=1`	Rolling 24-hour window