This "Main Boot-up Service Menu" is distinct from the standard user settings menu and is used for internal hardware alignments, such as power output and frequency fine-tuning.
While specific item numbers can vary slightly by firmware version, users on platforms like WorldwideDX Radio Forum have identified these key parameters: Description AM High Power Adjusts the maximum "dead key" for AM mode. #17 AM Low Power Adjusts the minimum "dead key" for AM mode. #19 & #20 Modulation anytone at5555n ii service menu work
He remembered the sequence. It wasn't in the manual. This was the dark art of radio repair—the combination of button holds that unlocked the hidden firmware. This "Main Boot-up Service Menu" is distinct from
The rain in Seattle didn't just fall; it assaulted the pavement, turning the city into a smear of gray neon. Inside the cab of his battered Peterbilt, Elias gripped the steering wheel, his knuckles white. The static from his radio was a relentless hiss, a wall of white noise between him and the outside world. #19 & #20 Modulation He remembered the sequence