Adjust TCI RX gain per channel¶
The TCI Server applet provides a gain slider for each of its four RX channels. Adjusting these lets you match the audio level that TCI clients (such as Log4OM or SunSDR tools) receive from each slice.
Before you start¶
- The radio must be connected. The TCI applet requires an active radio connection.
- The TCI Server applet must be visible. If the applet panel is not showing, click the TCI tray button on the right sidebar to reveal it.
Steps¶
- Click the TCI tray button on the right sidebar to open the TCI Server applet.
- Locate the RX1, RX2, RX3, or RX4 row for the channel you want to adjust. The slice assignment label next to the channel name (for example,
Slice A) shows which slice is driving that channel. A—means no slice is currently assigned. - Drag the meter/slider for that row left or right to set the gain. The value is saved immediately.
- Repeat for any other RX channels you want to adjust.
What each control does¶
| Control | Default | Valid range |
|---|---|---|
| RX1 gain meter/slider | 0.5 | 0.0 – 1.0 |
| RX2 gain meter/slider | 0.5 | 0.0 – 1.0 |
| RX3 gain meter/slider | 0.5 | 0.0 – 1.0 |
| RX4 gain meter/slider | 0.5 | 0.0 – 1.0 |
| Slice assignment label | — | — or Slice <letter> |
Each meter/slider also displays a live RX level using exponential smoothing — fast attack, slow decay — so the bar reflects signal activity on that channel while the drag position sets the gain.
Tips¶
- The slice assignment labels (for example,
Slice A) follow the DAX channel mapping. If a slice's DAX channel assignment changes, the label updates automatically. - Gain values are persisted as two-decimal floats (for example,
0.75). They are restored the next time AetherSDR starts.
Troubleshooting¶
- A channel shows
—and passes no audio to the TCI client — No slice is assigned to that DAX channel. Assign a slice to the corresponding DAX channel in your radio setup so TCI RX audio is routed to that channel.