Disable an IQ stream to free bandwidth¶
Each active DAX IQ stream consumes radio DSP resources and network bandwidth. Disabling a stream you are not using releases that capacity for other slices, audio streams, or IQ channels.
Before you start¶
- AetherSDR must be connected to the radio. The DAX IQ applet requires an active radio connection.
- The DAX IQ applet must be visible. If it is not, click the IQ tray button on the right sidebar to show it.
Steps¶
- Locate the row for the channel you want to stop — IQ 1, IQ 2, IQ 3, or IQ 4.
- Check that the toggle button on the right of that row shows "On". If it already shows "Off", the stream is already inactive.
- Click "On". The button label changes to "Off", the button style dims, and the level meter resets to 0. The stream is removed from the radio for this session.
What each control does¶
| Control | Default | Behavior | Persisted key |
|---|---|---|---|
| IQ 1..4 Off/On | Off | Clicking toggles the stream. When turned off, the button shows "Off" and the meter resets to 0. | DaxIqEnabled1 – DaxIqEnabled4 |
| IQ 1..4 meter | 0 | Displays the RMS level of the stream (0–100). Resets to 0 when the stream is disabled, the pan the stream is bound to is removed, or the radio disconnects. | — |
| IQ 1..4 rate | 48k | Sets the sample rate for the channel (24k, 48k, 96k, 192k). Unchanged by disabling the stream. The combo box holds your last chosen rate even while the stream is off — the rate is applied to the freshly-created stream when you re-enable. | DaxIqRate1 – DaxIqRate4 |
Tips¶
- IQ streams are per-session. The radio does not persist stream state across connections. AetherSDR stores your last enable/disable choice in
DaxIqEnabled1throughDaxIqEnabled4and restores those streams automatically about 1.5 seconds after reconnecting. If AetherSDR connects before the DAX IQ applet is constructed, restoration still occurs — the applet checks whether the radio is already connected when it initializes. - If you want a channel to stay off after a reconnect, disabling it here is sufficient — the persisted key is set to
Falseimmediately when you click "On" to turn it off. - Disabling a stream also clears the level meter. If the meter continues to show a non-zero reading after you click "Off", the radio state has not yet synced; the button will update again once the radio confirms the stream was removed. The meter also zeros when a stream exists but is not bound to a pan (for example, the pan that was using this IQ channel was switched to another IQ channel). No IQ data flows in that case, so the bar drops to 0 instead of freezing.
- The rate combo box remembers your selection even when the stream is off. During a non-default-rate enable the stream briefly reports 48k until the radio confirms the actual rate; the combo does not flip to 48k during this transient period, preserving your intent.
Troubleshooting¶
- Button shows "Off" but immediately returns to "On" — The radio may be restoring a persisted stream state on reconnect. Wait for the 1.5-second session setup delay to complete, then click "On" to disable the stream again.
- Level meter does not reset to 0 after disabling — The radio stream removal confirmation has not yet arrived. The meter will reset once the radio reports the stream no longer exists. If the meter shows a steady non-zero value but the stream appears disabled, check whether the stream is still bound to a pan — the meter zeros only when the bound pan is also removed.
- DAX IQ applet does not appear on Windows or Linux — The applet is hidden by default. Click the IQ tray button on the right sidebar. If it still does not appear, ensure your audio system supports PulseAudio (PipeWire is not required). The applet initializes on these platforms regardless of the audio backend.