This calibration requires entering the radio’s service menu.
- Precautions: Connect the radio to a quality Dummy Load and an external calibrated wattmeter before starting.
- Service Menu Entry: Turn the radio off. Hold down the MENU and VFO/MEMO buttons while turning the radio on to boot into service/adjustment mode.
- Accessing Adjustments: Press the MENU button, tap Set, and look for the hidden adjustment/calibration pages (specifically the TX power meter settings for individual bands).
- Adjusting Readings: Key the radio using a constant carrier mode (like CW or RTTY) at set power levels (e.g., 10W, 50W, 100W). Match the internal meter scale adjustment parameters to the external wattmeter reading shown on your external gear.
- Saving Changes: Save the settings before powering the radio down normally to write the new calibration values to the EEPROM. (Note: Entering the service menu without proper equipment or changing incorrect hex/voltage values can misalign your transmitter, so proceed with extreme caution.)
