Recall an ATU Memory¶
Use ATU memory recall to apply a previously stored tuner solution for the current band or frequency, skipping a full retune cycle.
Before you start¶
- AetherSDR must be connected to the radio. The TX Controls applet requires an active radio connection.
- The radio's internal ATU must have stored at least one memory from a prior tuning cycle. If no memory exists for the current frequency, recalling one will have no effect.
- MEM is disabled when the TGXL is in OPERATE mode.
Steps¶
- Open the TX Controls applet. If it is not visible, click the TX tray button on the right sidebar.
- Click MEM to toggle ATU memory recall on.
- Confirm the Mem indicator lights green. A green Mem indicator confirms the ATU is actively using a stored memory.
- To stop using the stored memory, click MEM again. The Mem indicator returns to dim.
What each control does¶
| Control | Kind | Behavior |
|---|---|---|
| MEM | Toggle button | Toggles ATU memory recall on/off. When on, the radio applies a stored tuner solution rather than running a new tune cycle. Disabled when TGXL is in OPERATE mode. |
| Mem | Indicator | Lights green when the ATU is using a memory. Dim when memory recall is off or no memory is in use. |
| ATU | Push button | Starts or bypasses the internal ATU tuning cycle depending on current status and frequency. See ATU button behavior below. Disabled when TGXL is in OPERATE mode. |
| Success | Indicator | Lights green when ATU status is Successful or OK. |
| Byp | Indicator | Lights orange when the ATU is in Bypass or ManualBypass. |
ATU button behavior¶
Starting with v0.9.5.1, the ATU button toggles between tuning and bypass on a per-frequency basis, matching the behavior of SmartSDR.
| Situation | Result of clicking ATU |
|---|---|
| No prior successful tune, or frequency has changed since the last tune | Starts a fresh ATU tune cycle. |
| ATU status is Successful or OK and the transmit frequency has not changed since that tune completed | Switches the ATU to bypass. |
| ATU is in Bypass or ManualBypass | Starts a fresh ATU tune cycle. |
Key points:
- The radio remembers the frequency at which the ATU last reported a successful tune. If you change frequency between clicks, the button always starts a new tune cycle rather than bypassing, even if the previous status was Successful or OK.
- After the ATU enters bypass, the stored tuned frequency is cleared. The next click will start a fresh tune cycle regardless of frequency.
MOX and Quindar tones (v0.9.7)¶
Starting with v0.9.7, clicking MOX routes through the Quindar-tone coordinator rather than directly toggling transmit. When the QUIN chip is enabled in the Audio Channel Strip and the active TX slice is on a phone mode, the K tone plays on PTT engage and the BK tone plays on PTT disengage. When Quindar is disabled or the active TX slice is not on a phone mode, the behavior is identical to previous versions.
No additional configuration is required in the TX Controls applet. Enable or disable Quindar tones from the Audio Channel Strip's QUIN control.
Tips¶
- If Byp lights orange after enabling MEM, the ATU has fallen back to bypass. Run a fresh tune cycle with ATU to build a new memory for the current frequency.
- The Mem indicator and the Success indicator can both be lit at the same time; Mem confirms a memory is in use, while Success confirms the stored solution is valid.
- To bypass the ATU without running a new tune cycle, click ATU a second time at the same frequency where the last successful tune occurred. The Byp indicator will light orange to confirm bypass is active.
Troubleshooting¶
- MEM button is greyed out and cannot be clicked — The TGXL is in OPERATE mode. Memory recall cannot be toggled in this mode. Check the TGXL operating mode before proceeding.
- Mem indicator stays dim after clicking MEM — No stored ATU memory exists for the current frequency. Run a full ATU tune cycle first using ATU, then try MEM again.
- Byp lights orange instead of Mem going green — The ATU has entered bypass because no usable memory was found. Use ATU to tune and store a new solution.
- ATU button starts a new tune instead of bypassing — The transmit frequency changed since the last successful tune. The button will not bypass until you are back on the exact frequency that was tuned. Tune again at the current frequency first.
- MOX engages but no Quindar tones play — Confirm that the QUIN chip is enabled in the Audio Channel Strip and that the active TX slice is set to a phone mode. Quindar tones do not play on CW or digital modes.