Advanced Display and Signal Visualizers

Run up to six synchronized receiver visualizations with shared timeline control, GPU acceleration, and interactive analysis.

Reviewed September 24, 2026 against source v1.7.41. Features and fixes are labeled by version. Check release availability.

Four-tile SPECTER SDR Advanced Display with three interactive 3D terrain views and one spectrum waterfall
ADVANCED DISPLAY // FOUR SYNCHRONIZED RECEIVER VIEWS

Build a one-to-six-view display

Open ADVANCED DISPLAY, choose a receiver in each tile, then assign an independent visualization. A tile can follow the live workspace or remain tied to its selected radio. The common timeline keeps all active views aligned during pause, playback, event navigation, and return to live.

  1. Open Advanced Display from the command bar.
  2. Select a layout with one to six tiles.
  3. Choose a receiver and visualization for each tile.
  4. Use PAUSE, PLAY, fixed jump controls, or JUMP TO LIVE across the shared timeline.

Available visualizers

ViewBest for
Spectrum and WaterfallExact frequency, level, bandwidth, and conventional scrolling history.
PersistenceAccumulated signal density, intermittent emitters, and noise-floor variation.
3D Receiver SpectrumInteractive depth-based inspection of peaks and neighboring energy.
3D Waterfall HistoryFrequency change, drift, repetition, and bandwidth over time.
Research 3D TerrainOrbiting accumulated RF structure with palette, grid, accent, and background controls.
Spectrum TunnelA forward-moving view through the same measured spectral history.
Band OccupancyPer-bin duty cycle relative to the receiver's measured floor.
Direction CompassRelative-amplitude comparison across bearing-assigned receivers.
IQ ConstellationComplex baseband structure, noise, clipping, and quantization.

GPU and fallback behavior

3D views prefer WebGL2. When Chromium exposes software rendering or blocks a usable GPU context, SPECTER automatically uses its interactive Canvas2D fallback instead of leaving a black tile. Measured FPS appears in the display header.

Direction limit: Direction Compass and Rosebud compare receiver amplitudes. They do not calculate a geographic fix. Use matched antennas, feed lines, gains, rates, and bearings for meaningful comparison.

Annotation and export

Use pen, circle, and arrow tools to mark a live or paused view. Choose color and size, undo or clear marks, save ink, and export a PNG for a report or field note.

Operate the workstation and Advanced Display together

The primary workstation can keep receiver controls, stacked traces, and the synchronized session timeline visible while Advanced Display carries independent analysis tiles on the same or a second screen. This four-tile example includes three radio views and a TinySA spectrum-only trace.

SPECTER SDR main workstation beside a four-tile Advanced Display with three SDR receivers and a TinySA spectrum analyzer
WORKSTATION + ADVANCED DISPLAY // FOUR-TILE EXAMPLE WITH TINYSA

Mixed radio and instrument layouts

The main workspace's v1.7.41 ordering puts radios first, spectrum analyzers next, and the radiation strip last. This does not change Advanced Display's one-to-six-tile layouts or receiver assignments. TinySA updates arrive once per completed sweep, so a wide range can legitimately update much more slowly than a radio FFT.

Real-product screenshots may show an earlier arrangement. Use the controls and version notes for the installed build.