Plot area
The spectrum plot draws your whole RF world — scans, TV channels, exclusions, band plans, and every frequency — and most of it responds to a click.
What’s on the plot
Section titled “What’s on the plot”- Scan traces — the scan files the current zone displays (each in its own color, with a per-zone dBm offset), plus a cyan live scan trace when an analyzer is connected.
- TV channels — shaded bands for active channels, with a channel-number strip below the plot.
- Cellular blocks — uplink, downlink, guard bands, and LMR/SMR services.
- Exclusion ranges — red when enabled; disabled ranges stay visible in grey.
- Band plans — the purple strip above the trace (Creating band plans).
- Exclusion threshold line — the horizontal red line with its dBm chip; drag the chip up or down to change the threshold (Exclusion threshold and scan data).
- Frequencies — coordinated frequencies in their group colors, calculation candidates in green, other sites’ frequencies in their view colors. Bars can show full occupied bandwidth and the frequency’s name.
- IMD heat map — an optional strip rating 2T3O intermodulation density across the spectrum (enable it in plot settings).
The control bar
Section titled “The control bar”Left group, in order: Default Bandwidth (reset to your default view), Zoom In / Zoom Out, Frequency Range (spectrum presets), Equipment Profile Bandwidth (zoom to a profile’s range), Capture Snapshot (export as image), the Y-axis auto-scale toggle, Expand Plot, Open plot in standalone window, and Plot Settings. Next to them sits the Zones display selector (Selecting plot zones).
In the center: a Go Back button (steps back through your view history) and four linked fields — Start, Center, Stop, Span — for typing an exact view. Edit any two and press Enter; the other two are derived automatically.
At the right: the live-scan controls (Connecting a live scan device) and the Scans menu with its Scan Data Preferences gear (Choosing which scan files a zone displays).
Mouse and trackpad
Section titled “Mouse and trackpad”| Gesture | Effect |
|---|---|
| Scroll wheel / two-finger vertical scroll | Zoom in and out around the cursor |
| Two-finger horizontal scroll | Pan |
| Left-click and drag across the plot | Zoom to the dragged span |
| Right-click and drag | Grab and pan (there is no right-click menu) |
| Hover | Crosshair with frequency/amplitude readout, plus a live readout dot on each scan trace |
| Drag the bottom brush | Move or resize the visible window using the overview strip |
| Drag the bar under the plot | Change the plot’s height |
Click targets
Section titled “Click targets”- A frequency — opens its action menu: Focus, Highlight, and (with edit rights) Add/Set for candidates, Recalculate, Exclude, Mark Incompatible, Move, Relocate (Pro — see Relocating frequencies), and Remove.
- A TV channel (band or number in the strip) — toggles the channel active or inactive.
- An exclusion range — toggles it on or off.
- A cellular block — toggles it on or off.
- A band plan segment — opens the band plan manager.
Guides in this section
Section titled “Guides in this section”- Creating a new frequency coordination — the recommended end-to-end workflow
- Setting the plot bandwidth by spectrum and by equipment profile
- Selecting plot zones
- Customizing plot settings
- Exporting the plot view
- Creating band plans and band plan snapshots
- Relocating frequencies
- Plot panels and views
- Connecting a live scan device and its troubleshooting page
Where’s the right-click menu? There isn’t one — right-drag pans the plot. Frequency actions are on left-click, and range/channel toggles are single clicks on their shapes or labels.
Why is a spectrum preset greyed out in the Frequency Range menu? It falls outside the site’s plot minimum/maximum. Widen those bounds in plot settings.
Can I start a calculation by selecting a range on the plot? No — calculations start in the Calculation area. The plot’s role is to prepare the ground (channels, exclusions, band plans) and to inspect and accept the results.
Can I pop the plot onto a second monitor? Yes — Open plot in standalone window puts the full plot at its own URL in a separate window. See Plot panels and views.