Drag the TX or RX filter cutoff guide line to move the radio passband

The EQ editor canvas shows dashed yellow vertical lines at the radio's current TX or RX filter cutoff edges. Dragging these lines moves the radio's passband in real time, letting you match your EQ shaping to the actual filter boundaries without leaving the EQ editor.

Before you start

• AetherSDR must be connected to the radio.
• The floating editor for the relevant side (TX or RX) must be open. The guide lines are draggable only in the frameless editor canvas, not in the docked applet tile.
• To open the floating editor, double-click the EQ stage in the CHAIN widget on the TX or RX side. See Open the frameless editor to add / remove / tune bands on either side.

Steps

1. Open the floating editor for the side you want to adjust: double-click the EQ stage in the CHAIN widget. The editor title bar reads "Aetherial Parametric EQ — TX" or "Aetherial Parametric EQ — RX".
2. Locate the dashed yellow vertical lines on the canvas. There are two: one at the low cutoff edge and one at the high cutoff edge of the radio's current passband.
3. Move the pointer toward one of the dashed yellow lines. When the pointer is close enough to the line, the cursor changes to a horizontal-resize arrow.
4. Click and drag the line left or right. The radio's corresponding filter cutoff updates in real time as you drag.
5. Release to set the new cutoff position.
6. Repeat for the other guide line if you want to adjust the opposite passband edge.

What each control does

Control	Behavior	Notes
Filter cutoff guide lines (TX)	Dashed yellow vertical lines on the TX editor canvas marking the radio's current TX low and high filter cutoffs. Drag in the editor to move the radio's TX passband in real time.	Cursor changes to a horizontal-resize arrow when hovering near a line.
Filter cutoff guide lines (RX)	Dashed yellow vertical lines on the RX editor canvas marking the active slice's RX passband edges (in the audio-frequency domain). Drag in the editor to move the radio's RX passband in real time.	Cursor changes to a horizontal-resize arrow when hovering near a line.
Smoothing	Applies fractional-octave power-averaging to the analyzer trace for display — does not affect EQ math. Lower fraction = smoother (⅓ is most smoothed; 1/96 is effectively off). Shared between TX and RX editors.	Tooltip: 'Fractional-octave smoothing applied to the analyzer trace. Lower fraction = smoother (⅓ = most, 1/96 = off). Affects display only — EQ math is unchanged.' Located in the editor header strip (floating editor only).
Peak Hold	When checked, the per-bin peak-hold trace in the analyzer stops decaying — every frequency's highest observed level is held until the button is toggled off.	Located in the editor header strip (floating editor only, not the docked applet tile). Amber background when checked.
Filter family	Selects the HP/LP cascade mathematics. Butterworth = maximally flat passband; Chebyshev = steeper rolloff with 1 dB passband ripple; Bessel = linear phase / gentler rolloff; Elliptic = steepest transition with ripple in both bands.	Applies only to HP and LP filter types; peak and shelf bands use their own fixed 2nd-order topology regardless. Located in the editor header strip. Persisted separately per path: ClientEqTxFilterFamily / ClientEqRxFilterFamily.
Reset	Resets all bands to the default 10-band template, restores the default band count, and resets the filter family to Butterworth. Saves immediately.	Tooltip: 'Reset all bands to default values'. Located in the editor header strip (floating editor only).
Filter-type icon row	A row of 8 custom-painted icons (one per band slot) at the top of the editor canvas area. Each icon draws the current filter shape (peak bell, shelf ramp, HP/LP slope) in its band's palette colour. Click an icon to cycle through the filter types for that band; clicking also selects the band, highlighting its handle on the canvas and its column in the parameter row.	Located in the floating editor only. Icons dim to 35 % opacity when the band is bypassed. Implemented by ClientEqIconRow.
Parameter text row	A row of 8 text columns (one per band slot) below the canvas showing each band's Freq, Gain, and Q values. Values update live during canvas drags and when you commit a numeric edit via the right-click menu. Clicking a column selects that band.	Located in the floating editor only. Implemented by ClientEqParamRow. Numeric edits committed via the right-click menu trigger immediate save and redraw.
Reference curve overlay	Draws a semi-transparent amber target curve on the canvas beneath the EQ band curves, showing the frequency response of a selected microphone or transmission target. Choose from Off (no overlay), AT&T 1959, Heil DX, Astatic D-104, Shure 444, or Heil HC-5. The overlay helps you shape EQ bands toward a known target response.	Located in the floating editor header strip. The curve is purely visual — it does not affect audio. The overlay draws after the analyzer but before the EQ band curves so your adjustments sit on top of the target.
Output Fader	Vertical combined fader + level meter on the right edge of the floating editor. Drag to set post-EQ master gain; scroll wheel adjusts in 0.5 dB steps; click the value at the bottom to type a dB value directly (Enter to commit, Esc to cancel). The level bar behind the handle shows the smoothed post-EQ peak in real time with the same green-amber-red gradient as the Tube level meter.	Persisted separately per path: ClientEqTxMasterGain / ClientEqRxMasterGain. Tooltip: 'Output gain (dB). Drag to set, wheel for fine step, double-click to reset to 0 dB. Click value and type to enter a dB value directly.' Gain range is linear 0.0 to ~4.0; the scale labels run from -40 to 0 dB. Located in the floating editor only.

Tips

• The guide lines are visible in both the docked applet tile and the floating editor, but dragging is only active in the floating editor canvas.
• A guide line is absent when the corresponding cutoff value is 0 or not set by the radio.
• Watch the parameter text row at the bottom of the editor while dragging to confirm the resulting passband edges.
• To type a precise output fader value, click the dB readout at the bottom of the fader. The readout changes to an editable field showing the bare number. Type a value (e.g., -6.5 or +3.0) and press Enter to commit, or press Esc to cancel and restore the previous value.
• When you edit a band's parameters numerically via the right-click context menu on the parameter text row, the changes are saved and the canvas updates immediately.
• To use a reference curve overlay, select a preset from the Reference curve dropdown in the floating editor header strip. The amber target curve appears on the canvas; shape your EQ bands to match.

Troubleshooting

• Cursor does not change to a horizontal-resize arrow near the line — You are hovering over the docked applet tile, not the floating editor canvas. Open the floating editor by double-clicking the EQ stage in the CHAIN widget, then try again.
• No dashed yellow lines are visible on the canvas — The radio has not reported filter cutoff values, or both cutoff values are 0. Verify the radio is connected and a slice is active.
• The output fader value edit does not accept my input — Ensure you are using a valid numeric format with an optional sign (±). Decimal points and scientific notation (e.g., 1.5e1) are accepted. Values outside -36 to +12 dB are automatically clamped.
• Numeric edits in the parameter text row do not take effect — Make sure you commit the edit by pressing Enter or clicking outside the text field. The changes are saved and the canvas is redrawn immediately.
• Reference curve overlay does not appear — Make sure you have selected a preset other than "Off" from the Reference curve dropdown.

Related

• Open the frameless editor to add / remove / tune bands on either side
• Inspect the TX EQ curve and live spectrum
• Inspect the RX EQ curve and live spectrum
• Read exact freq / gain / Q values in the parameter text row