Do not transmit on this radio—it is a receiver only. Applying transmit power from another radio into the ATS-20's antenna jack will destroy the Si4732 chip instantly.
: Changes the tuning increment (e.g., 1kHz, 5kHz, 10kHz). This is vital for fine-tuning SSB signals.
Rotate the encoder knob to scroll through available bands (FM, AM, LW, MW, SW). Press the encoder knob to select the desired band. Tuning and Adjusting Step Size Rotate the encoder knob to scan frequencies manually. To change the tuning increments, press the button.
In SSB (USB/LSB) mode, press the TUNE/BFO button once to enter BFO mode for fine-tuning voice signals. ats-20 radio manual
The battery may be critically low. Connect a Type-C charger.
Which you are trying to listen to (FM, Shortwave, or Amateur SSB)?
Internal 3.6V 800mAh lithium battery, rechargeable via USB . Do not transmit on this radio—it is a receiver only
Understanding the hardware limits helps you choose the right external antennas and operations:
Wait 3 seconds, or press the knob again, to lock the volume and return the encoder to its frequency-tuning function. Listening to Single Sideband (SSB)
The ATS-20 radio manual provides detailed operating instructions to help users get the most out of their device. Here are some key steps to follow: This is vital for fine-tuning SSB signals
Operating the ATS-20 relies heavily on combinations of button presses and turning the main rotary dial. Powering On and Off Locate the physical power switch on the device.
Always remember that radio propagation changes with the time of day. Lower frequencies (3–10MHz) usually work better at night, while higher frequencies (15–30MHz) are better during the day.