The display will enter the service mode, allowing you to scroll through settings using the channel selector [6, 8, 10].
| Menu Item | Parameter | Factory Setting (Example) | What It Does | | :-------------- | :---------------------------------- | :------------------------ | :---------------------------------------------------------------------------------------------------------------------------------------- | | | Phase-Locked Loop Reference | 0 | The master reference frequency for the radio. Do not adjust without advanced test equipment and a frequency counter. | | AM HI PWR | AM High Power | 20 | Controls the maximum AM transmit power output. | | AM LO PWR | AM Low Power | 12 | Controls the AM low-power setting. | | FM HI PWR | FM High Power | 44 | Controls the maximum FM transmit power output. | | FM LO PWR | FM Low Power | 12 | Controls the FM low-power setting. | | SSB HI PWR | SSB High Power | 87 | Adjusts the maximum SSB power output. | | SSB LO PWR | SSB Low Power | 20 | Adjusts the SSB low-power setting. | | FM DEV | FM Deviation | Unknown | Adjusts the FM deviation level. This is a critical setting for FM clarity. Some users wish it were higher from the factory. | | AM TONE / FM TONE / USB TONE / LSB TONE | Mic Audio Tone Shaping | Unknown | These likely adjust the equalization or "tone" of the transmitted audio for each mode, affecting the voice's character. | | RXBPF | Receive Band Pass Filter | Varies | Adjusting this parameter can alter the received audio quality. Some users increase it to reduce a "thin" or "far away" sound. | | ALC | Automatic Level Control | Unknown | Controls the ALC, which prevents over-driving the transmitter. Critical for clean, clear transmissions. | anytone at5555n ii service menu updated