: Found in many firmware versions, this setting (0–32) reduces background static when no strong signal is present.
The ATS-20 uses a minimalist design, which is great for portability but can lead to a "button-mashing" frustration. The core of the experience is the (the main knob).
Turn the clockwise until it clicks to turn the unit on.
Do not leave it plugged into a computer or a "noisy" cheap wall charger while listening. The "switching noise" from the charger will bleed into the radio's circuitry, creating a loud hum on AM and SW bands. Always listen on battery power for the cleanest signal. Why a "Better" Manual Matters ats20 radio manual better
If the voice sounds robotic or high-pitched ("Donald Duck" effect), change your size to the smallest setting (usually 100 Hz or 10 Hz, depending on your firmware version). Micro-tune the rotary knob until the voice sounds natural. Optimizing Bandwidth (BW)
The stock antenna is often insufficient indoors. Connect a simple, cheap random wire antenna (roughly 20 to 50 feet of insulated wire) via a BNC adapter. String it outdoors or near a window for an immediate, dramatic drop in background noise and a massive boost in signal clarity. Troubleshooting and FAQ
Essential for SSB or Morse Code (CW). Narrowing the filter cuts out static and background noise from nearby strong stations. Managing AGC and Attenuation : Found in many firmware versions, this setting
Press the (Bandwidth) button to narrow or widen the receiver filters:
The ATS20 radio is a popular, compact, and versatile two-way radio designed for communication in various environments, including outdoor activities, emergency situations, and everyday use. With its sleek design and user-friendly interface, the ATS20 radio has become a favorite among outdoor enthusiasts, event organizers, and professionals alike.
[ Antenna BNC Port ] [ Power Switch ] +--------------------------------------------------+ | [OLED Screen] ( VOL ) ( FREQ ) | | [Key] [Encoder] | | | | [TS Port] [Menu] [VFO/MEM] [Band+] [Band-] | | (audio) (1) (2) (3) (4) | +--------------------------------------------------+ [ Type-C USB Charging Port ] Turn the clockwise until it clicks to turn the unit on
Take the radio outside to a park or backyard away from household electronics to experience dead-silent noise floors and crystal-clear DXing (long-distance receiving). Use the Bandwidth Filter Strategically
Understanding the hardware limits helps you scan the airwaves effectively.