Enable radio-side graphic EQ for RX¶
Open the Equalizer applet and turn on the RX equalizer path so the Flex radio applies an 8-band graphic EQ to received audio inside the radio itself.
Before you start¶
- AetherSDR must be connected to a Flex radio. The EQ applet requires an active radio connection.
- If the applet panel is not visible, enable it via
View > Applet Panel.
Steps¶
- Click the EQ tray button in the right sidebar to open the Equalizer tile.
- Click RX. The button highlights blue and the sliders switch to the receive path.
- Click ON. The button highlights green. The RX equalizer is now active on the radio.
- Adjust the band sliders (63, 125, 250, 500, 1k, 2k, 4k, 8k) as needed. Each slider trims its band from −10 to +10 dB. The value label below each slider updates live.
What each control does¶
| Control | Kind | Default | Range | Behavior |
|---|---|---|---|---|
| ON | Toggle button | Off (unchecked) | On / Off | Enables or disables the equalizer for the currently selected path. Green highlight when enabled. |
| RX | Toggle button | Off (unchecked) | — | Selects the receive path for display and editing. Blue highlight when active. Mutually exclusive with TX. |
| TX | Toggle button | On (checked) | — | Selects the transmit path. The applet opens on the TX view by default. |
| Reset arc | Push button | — | — | Resets all 8 bands of the currently selected path to 0 dB. Tooltip: "Reset all bands to 0 dB". |
| 63 | Vertical slider | 0 dB | −10 to +10 dB | Trims the 63 Hz band for the selected path. |
| 125 | Vertical slider | 0 dB | −10 to +10 dB | Trims the 125 Hz band for the selected path. |
| 250 | Vertical slider | 0 dB | −10 to +10 dB | Trims the 250 Hz band for the selected path. |
| 500 | Vertical slider | 0 dB | −10 to +10 dB | Trims the 500 Hz band for the selected path. |
| 1k | Vertical slider | 0 dB | −10 to +10 dB | Trims the 1 kHz band for the selected path. |
| 2k | Vertical slider | 0 dB | −10 to +10 dB | Trims the 2 kHz band for the selected path. |
| 4k | Vertical slider | 0 dB | −10 to +10 dB | Trims the 4 kHz band for the selected path. |
| 8k | Vertical slider | 0 dB | −10 to +10 dB | Trims the 8 kHz band for the selected path. |
Tips¶
- The applet always opens showing the TX path. Click RX before adjusting sliders to make sure you are editing receive bands, not transmit bands.
- To quickly compare equalized and flat receive audio, click ON repeatedly while listening. The radio applies or removes the EQ immediately.
- To start fresh, click the Reset arc button. All RX bands return to 0 dB in one click.
Troubleshooting¶
- ON button does not respond — Confirm AetherSDR is connected to the radio. The EQ applet requires an active radio connection to send changes.
- Slider changes affect TX instead of RX — TX is the default view. Click RX first to switch the applet to the receive path before editing bands.