Ats20 Radio | Manual Better

Overview

The ATS-20 is a portable, battery-powered shortwave radio receiver designed for casual listening and serious radio enthusiasts. It features a digital tuning system, 1710 memories, and a range of 150 kHz to 30 MHz.

Key Features

• Frequency Range: 150 kHz to 30 MHz
• Digital Tuning: 1 kHz steps
• Memory Capacity: 1710 channels
• Modes: AM, FM, and SSB (Single Side Band)
• Power Source: 4 x AA batteries or external power supply
• Display: LCD display with frequency, mode, and signal strength indication

Operating the ATS-20 Radio

1. Power On/Off: Press the power button to turn the radio on or off.
2. Frequency Selection: Use the numeric keypad or the up/down buttons to enter a frequency or select a stored channel.
3. Mode Selection: Press the mode button to toggle between AM, FM, and SSB modes.
4. Volume Control: Adjust the volume using the volume buttons.
5. Tuning: Use the tuning buttons to adjust the frequency in 1 kHz steps.

Advanced Features

• Memory Channels: Store up to 1710 channels in 9 banks of 190 channels each.
• Scan: Automatically scan through stored channels or a range of frequencies.
• Lock: Lock the radio to prevent accidental changes to settings.

Troubleshooting

• No Power: Check battery installation, battery condition, and external power supply (if used).
• No Signal: Check antenna connection, antenna type, and signal strength.
• Interference: Adjust antenna position, use a different antenna, or adjust receiver settings.

Specifications

• Frequency Stability: ± 10 ppm
• Sensitivity: 10 μV (AM), 5 μV (FM), 2 μV (SSB)
• Selectivity: 6 kHz (AM), 12 kHz (FM), 2.7 kHz (SSB)
• Audio Output: 1 W (8 Ω)

Manual Tips and Tricks

• Use a good antenna: The ATS-20 radio performs best with a high-quality antenna, such as a wire dipole or active antenna.
• Adjust the receiver: Optimize receiver settings for best signal quality and noise reduction.
• Save channels: Store frequently listened channels in memory for easy access.

Conclusion

The ATS-20 radio is a versatile and user-friendly shortwave radio receiver suitable for both beginners and experienced radio enthusiasts. Understanding the manual and features of the ATS-20 radio will help users optimize their listening experience and make the most of this compact and capable radio.

Recommendations

• Read the manual: Familiarize yourself with the ATS-20 radio manual to understand its features and operation.
• Experiment with settings: Adjust receiver settings to optimize signal quality and noise reduction.
• Use a good antenna: Invest in a high-quality antenna to improve reception and signal strength.

For the ATS-20 and ATS-20+ digital radio receivers, the "better" or more detailed instructions are often provided by community-driven manuals and firmware guides rather than the original paper inserts. You can find comprehensive documentation and guides at the following sources: Detailed Manuals & Guides

ATS_EX Advanced Firmware Manual: This is a highly recommended "better" manual if your radio uses the popular Goshante (ATS_EX) firmware. It provides a detailed breakdown of all button functions, including long-press actions for band scrolling and volume adjustment. You can view it on GitHub or download a formatted version from Device Report . ats20 radio manual better

PU2CLR Manual: A widely used instruction set for SI4732-based radios that covers standard operations like switching between FM and AM/SSB modes, selecting bandwidth, and using the BFO (Beat Frequency Oscillator). A PDF version is available at hirokun.jp .

ATS-Mini Documentation: While originally for the ESP32 version, this GitHub Pages Guide contains clear explanations for common SI4732 features like Squelch, AGC/ATTN settings, and SoftMute that apply to the ATS-20 family. Core Operations Summary

Power On: Use the toggle switch on the rear, then press and hold the red button on the front panel for approximately 3 seconds.

Frequency Tuning: Rotate the encoder. For direct input or step selection, you typically click the encoder dial to cycle through tuning steps (1, 5, or 10 kHz). Band/Mode Switching:

Band: Use the Band+ and Band- buttons to cycle through 22 pre-configured commercial and ham bands.

Mode: Use the Mode button to switch between AM, LSB, USB, and FM. Overview The ATS-20 is a portable, battery-powered shortwave

SSB/BFO Adjustment: In USB or LSB mode, press the encoder or dedicated BFO button to enter regulation mode, allowing you to fine-tune the voice clarity (fixing the "Donald Duck" effect).

Firmware Upgrades: If your radio feels limited, you can reflash it with ATS_EX firmware using a standard USB-C or Mini-USB data cable and tools like AVRDUDE . Lets upgrade the ATS 20+

3.1 Navigation Logic

• Short Press the Encoder = Enter / Select.
• Rotate the Encoder (while in menu) = Change value.
• Long Press the Encoder (in main view) = Mute audio.

Additional Tips

• Antenna: For better reception, especially on shortwave, use the built-in antenna or attach an external antenna if possible.
• Battery Life: Keep an eye on battery life if you're using batteries, and consider using an external power source if you're operating the radio for extended periods.

Part 1: The Hardware Reality Check

Before diving into menus, ensure your hardware is set up for success. The official manual glosses over the importance of impedance matching.

• The Antenna Issue: The ATS-20 has a high-impedance input. If you connect a standard 50-ohm Ham radio antenna, you may find performance lacking. This radio performs best with long wire antennas (specifically "random wire" antennas).
• The BNC Adapter: Most units ship with a BNC connector. Using a BNC-to-Alligator-Clip adapter allows you to connect a long wire thrown over a tree or out a window, which drastically improves SW reception compared to a telescopic whip.

The Infamous Menu System (Factory Manual is Wrong Here)

Press and hold the knob to enter the menu. Here are the 5 settings you actually need to care about:

| Menu Item | Factory Manual Says | Better Translation | Your Setting | | :--- | :--- | :--- | :--- | | BAND | "Select band" | Sets the tuning step size (how fast the dial moves). | 1 kHz for Shortwave. 9 kHz for AM broadcast. | | SQ TH | "Squelch threshold" | Silences the hiss between stations. | Set to 2 or 3. Higher numbers cut out weak stations. | | RF GAIN | "Gain" | Volume for the antenna. Too high = distortion. | ``AUTOusually works, but20-30 dB manually is cleaner. | | **SSB** | "Single Side" | Enables Ham radio listening. | **SSB ON** (This changes everything). | | **BFO** | "Beat Freq Osc" | Fine-tunes the pitch of SSB voices. | Start at 0`, adjust up/down until voices sound human. |

3.2 Turning On/Off

• Power On: Press and hold the Power button (leftmost encoder) for 2 seconds.
• Power Off: Press and hold the same button for 2 seconds.
• The device saves the last frequency and mode automatically.

1. Introduction

Thank you for purchasing the ATS-20. This compact, software-defined radio (SDR) receiver is based on the Silicon Labs Si4732 DSP chip. It offers wide frequency coverage, multiple modulation modes, and high sensitivity in a portable form factor. Frequency Range: 150 kHz to 30 MHz Digital

This manual provides complete instructions for operation, configuration, and troubleshooting.

Key Features:

• Frequency range: 0.1 – 30 MHz (continuous) + 64 – 108 MHz (FM)
• Modes: AM, LSB, USB, NFM, WFM
• 20 user memory channels
• Battery level monitoring
• Rotary encoder tuning
• External antenna support (SMA connector)
• Backlit LCD display