Service Menu Work — Anytone At5555n Ii

Many operators mate the AT-5555N II with an external linear amplifier. To avoid overdriving and destroying the amplifier's input stage, you need a low dead key: Navigate to . Key the mic and monitor an external wattmeter.

Warning: Making improper adjustments in this menu can lead to poor transmission quality, permanent component damage, or a completely non-functional radio. How to Access the AT-5555N II Service Menu

To see the current stored value for a selected item, press and hold the PTT (Push-to-Talk) button on the microphone.

Once inside the engineering layer, standard front-panel controls take on completely different functions: anytone at5555n ii service menu work

Fine-tuning the receive frequency accuracy.

: For many users, using the official programming software via the rear programming jack is a safer way to customize features like Roger Beeps, SWR protection, and frequency limits without risking core hardware alignment. 4. Expanding Your Horizons

When adjusting transmit power parameters, the radio will transmit continuous carriers. Limit transmit times to a few seconds to avoid overheating the final amplification transistors. Many operators mate the AT-5555N II with an

Sets the exact signal-to-noise ratio required to open the audio gate in different modes.

The AnyTone AT-5555N II is a highly popular, modernized all-mode 10-meter transceiver known for its flexibility and robust performance. While standard operations cover everyday use, accessing the hidden (or alignment menu) allows advanced operators to fine-tune the radio's internal parameters without opening the chassis .

However, even the best factory-produced radios have tolerances. Over time, or immediately after purchase, you might notice that your transmitted frequency is off by 50 Hz, your AM carrier is too high, or your SSB output power seems low. This is where the hidden becomes your best friend. Warning: Making improper adjustments in this menu can

: Adjusts the reference frequency for the 10.24MHz BFO (Beat Frequency Oscillator). : Controls the local oscillator offset. fr0, fr4, fr5, fr9

Controls audio modulation levels. Dropping values close to zero can clean up distortion, while raising them maximizes swing. RFG (RF Gain)

Now, test on-air. Ask for a signal report on a quiet frequency. Check your frequency against a known stable station (e.g., WWV at 10.000 MHz or 15.000 MHz).