Press the button to select AM for standard shortwave broadcasts, or LSB/USB for voice communications on ham radio. Rule of thumb: Use LSB below 10 MHz and USB above 10 MHz.
Some users report that the audio mutes briefly when tuning across the band. This is often due to AGC settings. Try setting the AGC to "Fast" or manually adjusting the RF Gain (if available in your firmware version) to reduce the lag time.
Never use the cheap telescopic antenna for LW (Longwave) or MW (Medium wave). Use a 3.5mm external loop antenna for frequencies under 5 MHz. ats20 radio manual better
For indoor use, a passive or active magnetic loop antenna reduces the electromagnetic noise floor caused by household appliances. Dealing with Indoor Interference
: Includes adjustable audio bandwidth filters (0.5, 1, 1.2, 2.2, 3, and 4 kHz). Advanced Features and Modifications Press the button to select AM for standard
Amateur radio operators use Upper Sideband (USB) on frequencies above 10 MHz and Lower Sideband (LSB) on frequencies below 10 MHz. Tune to a known ham frequency (e.g., 7.150 MHz in LSB).
, which add deep settings for soft mute, screen brightness, and frequency calibration that aren't in the original manual. SSB Tuning Complexity: This is often due to AGC settings
Used for tuning frequencies and changing menu parameters. The knob can also be pressed down (clicked) to activate secondary functions.