Understanding the physical layout of the ATS-20 is crucial for smooth navigation. Front Panel Controls
The ATS-20 is not a traditional analog radio; it is a based on the SI4735 DSP chip . Unlike older radios that use coils and tuning capacitors, the ATS-20 processes signals mathematically.
: Selects the frequency increment. Short presses typically cycle through standard steps, while a long press in some versions might display a signal strength bar. BW (Bandwidth)
This determines how far the frequency jumps when you turn the knob. ats-20 radio manual
You are slightly off-frequency. Change your tuning STEP to 1kHz or the smallest available increment, and slowly turn the encoder knob up or down until the voice sounds natural. This process is called "fine-tuning" or "clarifying."
Cycles through tuning increments. Available steps vary by mode (e.g., 1kHz, 5kHz, 9kHz, 10kHz, 100kHz).
Essential for listening to amateur radio operators on HF bands. 4. Tuning and Steps Understanding the physical layout of the ATS-20 is
Because the ATS-20 architecture is open-source (built around Arduino and SI4732 libraries), you can update the firmware to unlock new features like a spectrum display bar, expanded frequency limits, or improved scanning modes. To flash new firmware:
A standard 3.5mm port for headphones or external powered speakers. 3. Basic Operating Instructions
The ATS-20 is a modern DSP (Digital Signal Processing) radio receiver. It's an incredible example of what's possible in the world of amateur radio and electronics when open-source development and powerful, low-cost hardware combine. : Selects the frequency increment
:
Physically, the radio is housed in a robust, pocket-sized aluminum enclosure, giving it a very solid, "premium" feel. The radio comes with the antenna, USB cable, speaker and battery.
FM: 64–108 MHz (with RDS functions where firmware permits) LW: 153–500 kHz MW (AM): 520–1710 kHz SW: 1730 kHz–30000 kHz (Shortwave)
Issue 3: SSB (USB/LSB) voice signals sound robotic, high-pitched, or unintelligible.