Anytone At-5555n Ii Service Menu !full! Online

This setting adjusts the master reference oscillator (TCXO). If your radio is slightly off-frequency on Single Sideband (SSB) mode—meaning voices sound like "Donald Duck" or are too low-pitched—you can adjust this parameter. You must use an accurate frequency counter while transmitting a carrier on AM/FM/CW into a dummy load to align this properly. 2. Power Output Alignments (PWR / TX POWER)

There is no "reset" for this specific menu; changes are permanent unless manually reversed.

While holding the button down, turn the volume knob to power on the transceiver.

: If successful, the radio will enter the Service Mode, often starting at a specific channel setting like CH-52 (RFG) Key Menu Settings & Operations anytone at-5555n ii service menu

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For operators looking to optimize audio punch without over-modulating or introducing splatter across channels:

The AnyTone AT-5555N II service menu is a powerful diagnostic and calibration tool, not a toy for "free power." When used with proper test equipment (frequency counter, watt meter, dummy load), it can resurrect a radio that has drifted off frequency or fix low modulation. This setting adjusts the master reference oscillator (TCXO)

However, beneath the surface of its user-friendly LCD display and multi-function buttons lies a hidden layer of calibration: .

Never transmit into an open antenna while making adjustments in the service menu. Heavy tuning can cause sudden high SWR spikes that will ruin the radio instantly.

: Controls the modulation depth percentage. Setting this too high causes heavy distortion and splatter. : If successful, the radio will enter the

Controls the graduation of the power meter blocks when transmitting into a 50-ohm dummy load. 4. Squelch Thresholds (ASQ & Manual Squelch)

If you must adjust the settings, follow this precise workflow to prevent hardware failure. Use a Dummy Load

Sets the low power dead key (typically adjusted to 1-2 watts). RFG RF Gain calibration; default value is usually around 86. bfC BFO Adjustment Adjusts the 10.24MHz BFO frequency. loC LO Offset

: The screen should display " FM " (Factory Menu), indicating you have successfully entered the service mode. Essential Service Menu Settings