"Gotcha," he whispered.
Calibrated using a two-tone audio generator to verify the final transistors reach peak linear output (around 50W–60W PEP) without clipping or distorting. 3. S-Meter Calibration (RX Gain)
If you want, I can convert this into a printable one-page technician checklist, a step-by-step guided calibration for a specific parameter (TX power, PA bias, or VCO trim), or a troubleshooting flowchart — tell me which. anytone at5555n ii service menu work
The service menu is not an extension of the regular user menu. It controls fundamental engineering parameters.
Once inside, you can navigate using the button or the channel knob to scroll through various alignment codes. "Gotcha," he whispered
If you did it correctly, the screen will look different. Instead of showing a frequency, you will see a numeric parameter (e.g., P-01 or d-01 ) and a value. You are now in the .
By understanding how the operates, you can optimize your radio for better performance. Always proceed with caution to ensure the long-term reliability of your transceiver. S-Meter Calibration (RX Gain) If you want, I
before making any changes, as a factory reset may not restore these specific internal alignments.
while powering on, then use the channel selector to switch between "BAND 1" and "BAND 2" (Export Mode). Google Groups Important Safety Warning write down your original factory values
If you don't own a frequency counter or a Bird wattmeter, do not open the service menu. Instead, send the radio to a reputable tech. The cost of calibration ($50-$80) is far less than the cost of a new AT-5555N II ($300+).
Accessing the service menu requires a specific key sequence at startup. Here's the step-by-step method: