The diff contains no user-visible behavior changes relative to what is already documented:

The SWR sweep controls (Start Sweep, Clear Sweep, PWR slider, setSwrSweepPowerWatts) are already fully documented in the current page.
The NRL row 4 visibility change is already documented in the "DSP row visibility" section.
The remaining diff is internal implementation (widget styling, signal/slot wiring, private member declarations).

Click the spectrum to activate a panadapter (multi-slice mode)¶

In a multi-panadapter layout, only one panadapter is active at a time. Clicking the spectrum area of an inactive panadapter brings it into focus so that your controls, slices, and tuning apply to it.

Before you start¶

AetherSDR must be connected to a FLEX-8600 radio.
At least two panadapters must be open. In single-panadapter mode, the title bar buttons (⬈, □, ×) are hidden and there is nothing to switch between.

Steps¶

Locate the panadapter you want to activate. Its title bar shows the slice it is bound to (for example, "Slice B").
Click anywhere on the Spectrum / waterfall area of that panadapter.
The panadapter is now active. Tuning, scroll-to-zoom, and all slice controls apply to it.

What each control does¶

Control	Kind	Default
Slice title	Indicator	Slice A
Spectrum / waterfall	Click / drag area	—
⬈ / ↩ (pop-out/dock)	Pops the panadapter out into a floating window or docks it back; emits popOutClicked or dockClicked.	Hidden in single-pan mode. Floating window is frameless (v0.9.0, #1922) — drag via the in-app title strip, resize via the bottom-right size grip; see 00-navigation.json for the shared frameless chrome. On macOS, every float/dock cycle now calls resetGpuResources() and re-binds the QRhi/Metal surface to the new window so the spectrum stays live (v0.9.5.1, #2280). Saved floating-window state is no longer restored when subsequent panadapters are added, preventing a blank floating window from spawning. rebuildDockedSplitter() reclaims any empty splitter slots when a pan docks back.
□ (maximize)	Push button	—
× (close)	Push button	—
Sens	Slider	30
🔒P (Lock Pitch)	Toggle button	—
🔒S (Lock Speed)	Toggle button	—
Lo (pitch min)	Slider	500 Hz
Hi (pitch max)	Slider	700 Hz
CPY ALL	Push button	—
CPY VIS	Push button	—
CLR	Push button	—
✕ (close CW)	Push button	—
CW decode text	Read-only text field	—
Start Sweep	Push button	—
Clear Sweep	Push button	—
PWR (sweep power)	Slider	1 W

The ⬈ / ↩, □, and × buttons are hidden in single-panadapter mode. They appear only when more than one panadapter is open.

CW decode panel¶

The CW decode panel appears beneath the spectrum when enabled. It requires PC audio routing to function — a "(requires PC Audio)" reminder is shown when audio is not yet routed.

Decoded text is coloured by confidence level:

Colour	Cost threshold
Green	below 0.15
Yellow	0.15 – below 0.35
Orange	0.35 – below 0.60
Red	0.60 and above

The Sens slider maps the 0 – 100 range to a cost threshold of 1.0 – 0.1. Higher values filter out lower-confidence decodes.

The Lo and Hi sliders set the pitch search range. Lo is clamped to be no greater than Hi, and Hi is clamped to be no less than Lo.

Click CPY ALL to copy the entire decoded text buffer to the clipboard. Click CPY VIS to copy only the text currently visible in the scroll area. Click CLR to clear the decode buffer. Click ✕ (close CW) to hide the panel.

Right-clicking inside the CW decode text area opens a context menu. In addition to the standard text actions (Select All, Copy, and so on), the menu includes a Clear item. Selecting Clear has the same effect as clicking the CLR button — it clears the decode buffer.

ANT panel SWR sweep controls¶

The ANT panel includes controls for running a low-power SWR sweep across the current TX band and displaying the result on the panadapter.

Start Sweep — runs a low-power tune sweep across the current TX band and plots SWR on the panadapter. The sweep uses the slice associated with the current panel and the power level set by the PWR slider. When a TGXL antenna tuner is in use, the sweep automatically bypasses the tuner before sweeping and restores the original tuner state when it finishes or is aborted.
Clear Sweep — removes the displayed SWR sweep trace from the panadapter.
PWR slider — sets the carrier power used during the sweep. Range is 1 W to 10 W. The current value is shown as a read-only label to the right of the slider. The slider can also be set programmatically via setSwrSweepPowerWatts; the label updates automatically.

SWR sweep phases¶

The sweep progresses through the following internal phases. These are not directly visible in the UI but determine what the radio is doing at each point during the sweep:

Phase	Description
Idle	No sweep in progress.
WaitingForTgxlBypass	Waiting for the TGXL tuner to confirm bypass mode before RF starts.
TgxlBypassSettle	Allowing a settle period after the TGXL bypass is confirmed.
Sweeping	Stepping through sweep frequencies and collecting SWR samples.
StoppingTune	Waiting for the radio to stop the tune carrier after the sweep completes or is aborted.
RestoringTgxl	Restoring the TGXL tuner to its original operate/bypass state.

SWR readings can be sourced from the radio's own forward/reflected power meters or from the TGXL tuner's meter, depending on which is available for the connected antenna port.

DSP row visibility (extended DSP, #2177)¶

The NRL noise-reduction row (DSP row 4) is available on both 6000-series and 8000-series firmware and is always visible regardless of whether extended DSP is enabled. The NRS (row 5), RNN (row 6), and NRF (row 8) rows remain hidden unless the connected radio reports extended DSP support.

Tips¶

Drag on the Spectrum / waterfall area to tune the slice frequency. Scroll to zoom the span.
To give one panadapter more screen space without closing others, click □ (maximize) in its title bar. See Maximize one panadapter to fill the main area.
To move a panadapter to a separate window, click ⬈ (pop-out). See Pop a panadapter out into its own window.