Q:
Hello, I recently built a QMX transceiver kit from QRP Labs. I'm having trouble getting it to work with the tuner because the QMX's SWR protection kicks in during tuning. Do you have any advice on how to overcome this problem?
(2025.10.15)
A:
Some radios do have high SWR protection, but even with this protection, they still have low power output.
You can fix this by installing the following method.
- Manual Mode: Go to the [Relay] screen, press and hold the button for 1 second to enter [Manual Mode], and manually adjust the L/C.
- Reduce the ATU's minimum starting power: Go to the ATU's advanced menu, set the "TUNE MIN ADC" setting to the lowest setting, and then operate your radio to transmit. Gradually increase the TUNE MIN ADC value until it stabilizes.