Ats20 Radio Manual Better 【Recommended ◉】

| Symptom | Likely Cause | Solution | |---------|--------------|----------| | No power, screen blank | Battery dead or reversed polarity | Charge 2 hours. Check battery connector. | | Low volume or distorted audio | Volume too low or speaker impedance mismatch | Set Volume >10. Use 8Ω speaker only. | | No reception on HF | Attenuator on, short antenna | Set Attenuator = 0 dB. Use external long wire. | | SSB sounds garbled | Wrong sideband (LSB/USB) or fine tuning off | Switch sideband. Tune ±1.5 kHz for clarity. | | Encoder jumps erratically | Dirty encoder or contact bounce | Rotate encoder fully 20 times quickly to clean. | | Battery shows 4.2V but dies quickly | Battery aging or fake capacity | Replace with genuine 18650 or pouch cell. |

This manual covers standard ATS-20 hardware revision v2.1 – v2.3.
For firmware updates, schematics, and community support, visit:

If you received this manual as a printed copy, the latest electronic version is available from your vendor’s support page.

End of Manual

Document version 1.0 – Improved Edition
Free to distribute, not for commercial resale.

| Band | Frequency | Recommended Antenna | |------|-----------|---------------------| | LW/MW | 0.1–1.7 MHz | External loop or long wire (5–10 m) | | SW (HF) | 2–30 MHz | Random wire (7–10 m) + counterpoise | | FM | 88–108 MHz | Telescopic whip, fully extended | | VHF | 118–174 MHz | External VHF whip or rubber duck |

To reduce noise:

The "ATS20 radio manual better" search exists because the factory failed its customers. But now, you are not a victim of bad documentation.

You now know:

Keep this guide saved. Share it with other frustrated ATS20 owners. Your radio is capable of hearing Ham operators in Japan, pirates in the Caribbean, and aviation traffic across the continent—provided you use the better manual.

Now, go tune to 3.860 MHz (LSB) at sunset and listen to the world.

The standard documentation for the is often brief, but better guidance is available through community-supported manuals and advanced firmware like the ATS_EX firmware guide Core Control Guide Primary Function (Short Press) Advanced Function (Long Press/Special) BAND+ / BAND- Cycle forward/backward through bands. Long press to quickly scroll through bands. VOL+ / VOL- Adjust volume via encoder or direct steps. short press often acts as a Cycles tuning steps (1kHz, 5kHz, 10kHz). Long press (in some firmware) toggles the Switche modulation: FM, AM, LSB, USB. In some versions, long press saves current FM station. Adjusts bandwidth filters (0.5, 1, 1.2, 2.2, 3, 4 kHz).

Used to delete stations in favorites menu (firmware dependent). Toggles Automatic Gain Control On/Off. Helps maintain audio level stability. Rotate to tune frequency; press to confirm or enter menus.

In SSB mode, press and rotate to adjust the BFO (fine-tune voice). Operational Tips ATS_EX Firmware for ATS-20 DSP Receiver - GitHub

Report: ATS20 Radio Manual Review and Comparison

Introduction: The ATS20 radio is a popular ham radio transceiver used by amateur radio operators worldwide. The manual provided with the radio is a crucial resource for users to understand its features, operations, and troubleshooting. This report reviews the ATS20 radio manual and compares it with other available resources to determine if there are better alternatives.

ATS20 Radio Manual Review:

Comparison with Other Resources:

Better Alternatives:

Conclusion:

Recommendations:

Rating: 4/5

Limitations: This report is based on a limited review of available resources and may not be comprehensive. Users are encouraged to provide feedback and share their experiences with the ATS20 radio manual.

Since the official ATS-20 and ATS-20+ documentation is often limited, enthusiasts typically rely on community guides and firmware-specific documentation to get the best performance. Quick Start Guide

Initial Setup: Attach the rubber feet for stability, screw the telescopic antenna into the "ANT" port, and charge via the USB Type-C port until the LED indicator changes.

Switching Bands: Short press the BAND+ button to enter selection mode, then rotate the encoder knob to choose your desired band (FM, AM, LSB, USB, etc.).

Fine Tuning: Use the Step button to select your tuning increment, then rotate the TUNE/BFO knob to dial in the frequency. Advanced Features & "Hidden" Settings

Many units come with or can be upgraded to Goshante's ATS_EX firmware or similar versions, which unlock deeper settings:

Soft Mute (SM): Adjustable from 0–32; lower values reduce the "chuffing" silence between tuning steps but may increase noise while rotating the knob.

Sync Mode (Syn): Can be enabled for SSB to help stabilize reception of shifting signals.

Bandwidth (BW): Press the BW button to cycle through filters; narrower settings help reduce interference from nearby stations. Essential Tips for "Better" Performance

The "Hand" Effect: The radio's sensitivity often drops when you set it down. A common fix is using a BNC-to-banana adapter with external copper wires to act as a simple dipole antenna, which reduces noise interference.

Power Source: Use battery power whenever possible. Charging while listening often introduces significant mains hum and electronic noise into the receiver. Documentation

: If you need a more detailed English manual, many users recommend the ATS-20+ Advanced Firmware User Manual for detailed button maps and setting definitions. Lets upgrade the ATS 20+

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 ats20 radio manual better

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 .

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.

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+

While the official ATS-20/ATS-20+ manual is often criticized for being basic, the radio's standout "better" feature is its adjustable bandwidth filters

, which allow you to manually narrow the audio passband to isolate signals in crowded bands. Key Features & Manual Overview According to the ATS-20 Si4732 User Manual , these are the primary functions: Bandwidth Filtering : You can select between 0.5, 1, 1.2, 2.2, 3, and 4kHz

filters. This is essential for SSB (Single Side Band) to clear up voice signals and reduce background static. Multi-Mode Support : The device supports FM, AM (MW & SW), and SSB (LSB & USB) Custom Tuning Steps

: You can cycle through step sizes (1, 5, 9, 10, 50, 100k, and 1M) for faster or more precise tuning by pressing the BFO Control : Use the main knob in SSB mode to adjust the Beat Frequency Oscillator (BFO)

for fine-tuning voice transmissions so they don't sound like "Donald Duck". Pre-configured Bands : The firmware includes 22 pre-configured commercial and amateur radio bands for quick jumping between listening areas. Performance Tip

Many users find the stock firmware limited and recommend upgrading to the ATS_EX Firmware , which improves the interface, adds a battery voltage display , and allows for even finer 10Hz tuning steps to unlock these advanced features?

The ATS20 (SI4732) is a powerhouse of a portable radio, beloved by the enthusiast community for packing All-Band (FM, AM, SW, LW) and SSB capabilities into a pocket-sized metal box. However, if you’ve just unboxed one, you likely noticed that the included "manual" is more of a cryptic pamphlet than a guide.

To get the most out of this device, you need a "better" manual—one that explains the hidden quirks of its firmware and how to actually pull signals out of the air. 1. Understanding the Interface (The Basics) | Symptom | Likely Cause | Solution |

The ATS20 relies on a rotary encoder (the knob) and a series of buttons. Most buttons have a "short press" and a "long press" function. The Knob: Used for tuning frequency and navigating menus. BFO/VFO: This is the most important toggle. VFO mode: Changes the actual frequency.

BFO mode: Used in SSB (Single Sideband) to "fine-tune" the voice so it doesn't sound like a cartoon character. Band: Short press cycles through FM -> AM -> USB -> LSB. 2. Improving Reception: The Secret Sauce

The stock telescopic antenna is fine for local FM, but for Shortwave (SW) or Ham Radio (SSB), it’s often inadequate.

The Grounding Trick: Since the ATS20 has a metal case, touching the case while holding the radio actually improves the ground plane, often boosting signal strength.

External Wire: Use a simple clip-on wire antenna. Clip it to the telescopic whip and run it outside or near a window to significantly reduce "noise floor" interference. 3. Mastering the Bandwidth (BW)

A common mistake beginners make is leaving the bandwidth wide open.

For AM/Shortwave: Narrow the bandwidth (e.g., to 3.0kHz or 2.5kHz) if there is a lot of static or an adjacent station bleeding over. For FM: Keep it wide for high-fidelity audio. 4. Navigating the SSB (Single Sideband)

If you want to listen to Ham Radio operators, you must switch to USB (Upper Sideband) or LSB (Lower Sideband). Find the frequency (e.g., 7.175 MHz for 40m ham band). Switch mode to LSB. Press the BFO button.

Slowly turn the dial. You will hear the pitch of the voice change. Adjust until the speech is clear and natural. 5. Advanced Tweaks: Step Sizes The "better" way to tune is to adjust your Step Size.

If you are scanning a wide range, set the step to 10kHz or 100kHz.

If you are zeroing in on a specific station, drop it to 1kHz or even 0.1kHz. This prevents you from overshooting the signal. 6. Battery Management The ATS20 uses a built-in lithium battery charged via USB.

Tip: 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

The ATS20 is based on the SI4732 chip, which is incredibly sophisticated. Most users only ever use 20% of its potential because the default instructions are poor. By mastering the BFO and Step increments, you transform a "toy" into a legitimate piece of radio gear.

The ATS-20/ATS-20+ is a compact, Si4732-chip all-band DSP receiver utilizing a USB-C charged, battery-powered design to cover FM, MW, SW, and LW bands. Operating via a rotary encoder and Band/Mode buttons, the device supports SSB, bandwidth filters, and advanced tuning through firmware, with a factory reset initiated by powering on while pressing the encoder. For detailed instructions, see the official Hirokun PDF and the Goshante firmware guide.

ATS-20+ Firmware Update Guide | PDF | Computer File - Scribd

Don’t try to read the manual cover-to-cover like a novel. Instead, focus on these critical areas first: