External watt meter (accurate at low power), dummy load.
| Menu # | Parameter | Typical adjustment range | |--------|-------------------------|--------------------------| | 01 | PLL reference oscillator | ±500 Hz or ppm | | 02 | AM carrier power | 0–100% (Watts) | | 03 | AM modulation depth max | 0–100% | | 04 | SSB (LSB/USB) peak power | 0–100% | | 05 | FM deviation | 0–5 kHz | | 06 | Squelch threshold min | 0–255 | | 07 | S-meter calibration | 0–255 | | 08 | TX audio gain (AM) | 0–255 | | 09 | TX audio gain (SSB) | 0–255 | | 10 | ALC threshold | 0–255 |
: Turning the radio off usually saves the new settings. anytone at-5555n ii service menu
Set carrier to 2W PEP to drive a 100W linear amplifier safely.
Common parameters (exact order varies by firmware): External watt meter (accurate at low power), dummy load
Before we dive into the key combinations, let’s address the elephant in the room.
: There is no master reset for the service menu. If you change a value without recording the original, there is no way to automatically restore it. Common parameters (exact order varies by firmware): Before
Controls the local oscillator offset. Experts suggest adjusting this
While hardware modifications (like snipping the white wire) can "open up" bands, the service menu is the preferred method for software-based "tuning" to ensure clean transmit and receive audio. Google Groups hardware band modification for this radio? Anytone 5555n Ii Service Menu - Google Groups
If you get lost, there is a built-in safety net.
