Anytone At-5555n Ii Service Menu ◎

Once inside, you'll use the to scroll through all the parameters (e.g., CH-01, CH-02...). Interestingly, to edit a parameter's value, you must press and hold the PTT (Push-to-Talk) button on the microphone while turning the VFO knob to adjust it up or down. Releasing the PTT button will likely save the new value.

Legal warning: Check your local license limits. In the US, CB is limited to 4W AM / 12W PEP SSB.

) signal into the antenna jack to calibrate the software S-meter accurately. Critical Warnings and Best Practices

Immediately press the remaining buttons on the top row in order (starting with , then RB , NB , SCAN , MEM , and EMG ). The "FUNC" Sequence: Hold [FUNC] while powering on. Then press [RB] , then [NB] , then [DW] in sequence. anytone at-5555n ii service menu

While holding those buttons down, turn the power knob to switch the radio on.

You must write down every original value before changing it.

This calibrates the internal Standing Wave Ratio meter. It ensures the radio accurately reads reflected power to protect itself from antenna mismatches. Essential Tools for Service Menu Adjustments Once inside, you'll use the to scroll through

Final notes and best practices

The display should now show service parameters, typically starting with (BFO adjustment) followed by a 3-digit value. Google Groups Navigation and Key Parameters Navigation button to scroll through different settings. Mode-Specific Settings

The service menu controls fundamental parameters that are not adjusted during everyday operation. These can include modulation levels, frequency alignment, and power output stages. Because electronic components can have slight manufacturing variances, these internal settings allow each unit to be precisely calibrated before leaving the factory. For a dedicated enthusiast, understanding that these parameters exist provides insight into the complexity of modern transceivers, which are high-precision instruments rather than simple consumer electronics. Legal warning: Check your local license limits

Over time, or due to extreme temperature variations, the radio's internal reference crystal oscillator can drift slightly. This causes the radio to transmit or receive slightly off-frequency, which is especially noticeable as distorted voice audio on Single Sideband (SSB) modes. Sets the master clock frequency.

: Alignment settings may differ depending on your current mode (AM, FM, USB, LSB, CW). Common Parameters : Adjusts the 10.24MHz Beat Frequency Oscillator (BFO).