The ATS-20 is a compact HF/VHF amateur and utility transceiver family (common model name used by various manufacturers and kits). This exposition assumes a typical single-conversion, AM/CW/SSB-capable ATS-20-style transceiver with standard front-panel controls, RF front end, IF stage, audio chain, power supply, and common maintenance/adjustment procedures. If you need details specific to a manufacturer or model variant, say so.
Specify which of the following you want next (no questions asked):
(Using model-specific service manual pages or schematics will enable precise alignment frequencies, component values, and adjustment locations.)
ATS-20 Shortwave Radio: The Unofficial User Manual The ATS-20 (SI4732 based) receiver has become a favorite among hobbyists for its portability, affordability, and surprisingly wide frequency coverage. However, because these radios often arrive with minimal or poorly translated documentation, getting started can be a bit of a puzzle.
ATS-20 Radio Manual: A Comprehensive Guide
The ATS-20 radio is a popular, compact, and versatile two-way radio that has gained a significant following among outdoor enthusiasts, emergency responders, and communication professionals. In this article, we'll take a closer look at the ATS-20 radio manual, covering its key features, operating instructions, and troubleshooting tips.
Overview of the ATS-20 Radio
The ATS-20 radio is a handheld, FM two-way radio that operates on the 20-meter amateur radio band. It is designed to provide reliable communication over long distances, making it an ideal choice for camping, hiking, emergency response, and other outdoor activities. The radio is equipped with a range of features, including:
ATS-20 Radio Manual: Operating Instructions
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:
Advanced Features
The ATS-20 radio manual also covers advanced features, including:
Troubleshooting Tips
The ATS-20 radio manual provides troubleshooting tips to help users resolve common issues, including:
Conclusion
The ATS-20 radio manual is a comprehensive guide that provides users with the knowledge they need to operate and troubleshoot their device. With its range of features, compact design, and ease of use, the ATS-20 radio is an excellent choice for outdoor enthusiasts and communication professionals. By following the instructions and tips outlined in this article, users can get the most out of their ATS-20 radio and stay connected in the field.
Additional Resources
For more information on the ATS-20 radio and its operation, users can consult the following resources:
By understanding the features and operation of the ATS-20 radio, users can unlock its full potential and stay connected in a variety of situations.
The ATS-20 radio is a popular, compact, and versatile shortwave radio receiver. Here's some general information about it:
The ATS-20 radio manual typically covers various aspects of the radio's operation, features, and specifications. Here are some key points that are often included:
Key Features:
Operating Instructions:
Specifications:
Troubleshooting:
Additional Information:
If you're looking for a specific ATS-20 radio manual, I can suggest some possible sources:
The ATS-20 (and its successor, the ATS-20+) is a portable, all-band DSP radio receiver based on the Si4732 chip and Arduino Nano architecture. It is popular among hobbyists for its compact size, affordability, and support for SSB (Single Sideband). 1. Key Controls & Button Functions
The radio is operated primarily through a front panel and a rotary encoder (tuning knob). ATS-20+ | Short Wave & FM Receiver | All Mode including SSB
The ATS-20 (and the upgraded ATS-20+) are compact SI4732-based all-band radio receivers popular in the ham radio community. Because these are often sold as DIY kits or unbranded imports, a single "official" printed manual can be hard to find, but you can use the following guide for operation and resources. Quick Start & Basic Controls
Power On/Off: Most units use a dedicated slide switch or a long press on the volume/encoder knob.
Band Selection: Short press the BWS or Band button to cycle through FM, AM, and various SW (Shortwave) bands.
Tuning: Rotate the main encoder knob. Short-pressing the knob typically changes the tuning step (e.g., 1kHz, 5kHz, 10kHz).
Mode Switch (SSB): For Shortwave, use the Mode button to switch between AM, USB, and LSB (Single Side Band).
Volume: Controlled via a dedicated potentiometer or a secondary function of the encoder. Advanced Settings & Terminology
If your unit is running custom firmware (like the Goshante ATS-20 Exa), you may see these settings in the menu:
SM (Soft Mute): Adjusts the threshold for audio muting when signals are weak (range 0–32).
SVC (SSB AVC): Enables or disables Automatic Volume Control specifically for Single Side Band.
Syn (Sync Mode): A toggle for synchronous detection in SSB to improve signal clarity.
SSM (SSB Soft Mute Mode): Choose between RSS (based on signal strength) or SNR (based on signal-to-noise ratio). Manuals & Firmware Resources
Since the ATS-20 shares architecture with the more advanced ATS-25, their manuals are often used interchangeably for firmware-related functions:
Comprehensive Guide: A detailed ATS-25 User Manual (PDF) is often cited by users as the best reference for shared software features.
Community Discussions: The ATS-20/25 Facebook Group is the primary hub for troubleshooting and finding the latest firmware files.
Technical Diagram: For hardware enthusiasts, technical layouts and wiring diagrams are frequently shared on GitHub repository discussions. im looking for ATS-20 Diagram
The ATS-20 hadn’t come with a manual. Just the radio itself, a slick slab of black plastic and a tiny, glowing screen, wrapped in a single sheet of bubble wrap. When Elias had ordered it from an online marketplace for forty-seven dollars, the listing had said: “ATS-20 DSP Radio Receiver – Full Band – See photos for manual.”
The “manual” in the photos was a grainy, low-resolution JPEG of a single page of Chinese text, already watermarked by three different resellers. Elias, a man who liked to read instructions for toasters cover to cover, felt a prickle of unease.
He turned the radio on. The screen bloomed a cool blue. A hiss of static filled his basement workshop. There were only four buttons, a volume knob, and a smooth tuning dial that clicked with a satisfying, oily precision. Without a guide, the device was a monolith. He pressed the buttons at random: BAND. The frequency jumped from FM to shortwave. MODE. The static shifted from a whisper to a roar. VFO. The numbers on the screen began to blur and race as he spun the dial.
He was a caveman with a smartphone.
That night, he found a PDF online. It was a scanned copy of a copy, the diagrams reduced to smudged charcoal blobs. But the text, broken English, was just legible enough.
“WARNING: ATS-20 contain internal spirit. Do not anger with alkaline battery.”
Elias chuckled. He ignored the warning and inserted two fresh Duracells. ats-20 radio manual
“STEP 1: To catch the voice from the before-time, set BAND to ‘LW.’ Spin dial backward through the numbers until screen say ‘0.’ Then spin slower. You will hear the earth turn.”
He followed the instructions. He spun the dial backward. 150 kHz. 100 kHz. 50 kHz. The static deepened into a low, rhythmic thrum. It wasn't a station. It sounded like a heartbeat, slow and planetary. He felt a strange vertigo, as if the concrete floor beneath him was rotating.
“STEP 4: For the numbers station, tune to 4625 kHz at 02:00 UTC. MODE to ‘USB.’ Do not speak to the lady. She is not a lady anymore.”
A chill ran down his spine. It was 1:58 AM. He dialed in the frequency. At exactly 02:00, the static parted. A woman’s voice, eerily flat and pristine, began to recite numbers in German. “Acht… zwei… neun… null… vier…” Elias leaned closer, mesmerized. The manual hadn’t told him what to do when she finished. He found out. After the last number, the voice stopped. Then, a single, clear whisper came through the speaker, as if she was standing right behind him: “Why are you listening?”
He slammed the power button. The screen went black. His heart hammered against his ribs.
He didn’t touch the radio for a week.
Then, curiosity, that old poison, got the better of him. He opened the PDF to the final page. The last instruction was the only one not garbled by poor translation. It was crisp, precise, and written in a different, heavier font.
“FINAL STEP: Turn the volume knob fully counter-clockwise until you feel a click past ‘0.’ This is not ‘MUTE.’ This is ‘MEMORY.’ The radio will then listen to you. Speak your deepest secret into the silence. The ATS-20 will broadcast it once, on every frequency, for one second, to every receiver on Earth. This cannot be undone. Do not turn the knob past ‘0’ unless you are prepared to be truly heard.”
Elias stared at the radio. The blue screen was dark, but the power cord was still plugged in. He picked it up. His thumb rested on the volume knob. He could feel the faint resistance, the ghost of a notch before the final stop. The click past ‘0.’
In the silent basement, he whispered, “No.” He set the radio down, unplugged it, and removed the batteries.
He never turned it on again. But sometimes, late at night, he swears he hears a faint voice coming from the unpowered speaker. His own voice. Speaking a secret he has never told a soul.
To enter the Setup Menu, press and hold the Encoder Button (or sometimes a dedicated "Menu" button depending on firmware) for 2 seconds.
This unit supports Single Side Band (SSB), essential for Ham Radio and Utility stations.
| Control | Function | |---------|----------| | Volume Knob | Power & volume (rotate) | | Tuning Knob | Change frequency / navigate menu | | Band Button (B) | Cycle: FM → SW → MW → LW | | Mode Button (M) | Switch tuning steps (fine/coarse) | | Memory/Set Button (S) | Save/recall presets (long press to save) | | Light/Display Button | Backlight on/off (hold for menu) |
While the factory ATS-20 radio manual may leave you frustrated, this guide provides everything you need to enjoy one of the most fun, portable shortwave and SSB receivers on the market. The ATS-20 is not perfect—the UI has a learning curve, and the stock firmware has quirks—but with these instructions, you can unlock its full potential as a travel-friendly ham radio companion, an aviation band scanner, or a bedside world receiver.
Remember: The best accessory for your ATS-20 is patience. Spend an afternoon with the encoder and these notes, and soon you will be tuning in to transatlantic hams, marine weather faxes, and distant AM broadcasters like a pro.
Have a tip or found a mistake in your specific ATS-20 revision? Community forums like Radioreference.com and the SI4735 subreddit are excellent resources for advanced tweaks beyond any manual.
Search terms used: ATS-20 radio manual, ATS-20 plus manual, Si4732 radio instructions, ATS-20 Pro SSB tuning, ATS-20 hidden menu, ATS-20 firmware update.
ATS-20 Si4732 Radio Receiver: The Ultimate User Guide The ATS-20 (Si4732) has become a favorite among radio enthusiasts for its portability and impressive range. Whether you are a seasoned "ham" or a newcomer to shortwave listening, this guide serves as your comprehensive ATS-20 radio manual to help you master its features. 1. Getting Started
Before diving into the frequencies, ensure your device is ready:
Charging: Most units use a Mini-USB or USB-C port. A red LED usually indicates charging, turning off or green when the 3.7V lithium battery is full.
Antenna: Screw the telescopic antenna into the BNC connector. For better HF (High Frequency) reception, consider using an external long-wire antenna. 2. Controls and Layout
Encoder Knob: This is your primary tool. Rotate it to change frequencies or navigate menus. Press it to confirm a selection.
Power Switch: Usually located on the side or back to toggle the unit on/off.
Volume: Adjust using the dedicated knob or through the digital interface (depending on your specific firmware version). 3. Selecting Modes and Bands The ATS-20 is a compact HF/VHF amateur and
The ATS-20 covers a massive range including FM, AM, and SSB. Use the Bands menu to cycle through: FM: Standard broadcast radio (64–108MHz). MW (Medium Wave): Standard AM radio. SW (Shortwave): 1.7MHz to 30MHz.
LSB/USB (Lower/Upper Sideband): Essential for listening to amateur radio operators on HF bands. 4. Tuning and Steps
To change your tuning speed, press the Step button (or encoder). Common increments include: 1kHz / 5kHz: Best for AM/MW scanning. 100kHz: Fast scrolling through FM. 10Hz / 100Hz: Critical for "clarifying" voices in SSB mode. 5. Advanced Features
Bandwidth (BW): You can adjust the filter width to cut out interference. Use narrower settings (e.g., 2.0kHz) for crowded SSB bands and wider settings (e.g., 6.0kHz) for high-quality AM.
BFO (Beat Frequency Oscillator): When in SSB mode, the BFO allows you to fine-tune the pitch of the voice to make it intelligible. Rotate the encoder until the "Donald Duck" sound turns into a clear human voice. 6. Menu Settings
By accessing the internal menu (usually a long press of the encoder), you can: Adjust Brightness: Save battery by dimming the OLED screen. Scan: Automatically search for the next strongest station. Mute: Quickly silence the audio. Troubleshooting Tips
No Sound on SW? Check your gain settings and ensure you are outside or away from electronic interference like LED bulbs or PC power supplies.
Firmware Updates: Many ATS-20 radios run on Arduino-based code. If your device feels "buggy," the enthusiast community often releases updated sketches that improve stability and add features.
Note: 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.
: Attach the included rubber feet to the bottom of the metal case to prevent sliding. Antenna Connection : Connect the telescopic antenna to the BNC connector
on top. For better performance on shortwave (SW), consider using a dedicated external wire antenna. USB-C port
(on newer units) or Mini-USB to charge the internal lithium battery. A charging indicator LED will show status. 2. Control Layout & Key Functions
The interface typically consists of a primary rotary encoder (tuning knob) and several front-panel buttons: Button/Control Primary Function SSB Mode Function VOL+ / VOL- Adjusts speaker/headphone volume. BAND+ / BAND- Cycles through preset frequency bands (FM, MW, SW, LW). Switches modulation: FM, AM, LSB, USB. Cycles through tuning increments (e.g., 1kHz, 5kHz, 10kHz). Adjusts BFO fine-tuning.
Changes bandwidth filter settings (useful for reducing noise). Standard frequency navigation. Press to confirm or scan. Adjusts Beat Frequency Oscillator (BFO). 3. Advanced Operation Frequency Scanning : On firmware that supports it, ensure
is set to "On" in the settings. Press the tuning knob to begin scanning; rotate or press it again to stop. SSB Reception : To listen to amateur radio operators, switch the to LSB or USB. Use the
function to fine-tune the signal until voices sound natural. System Reset (EEPROM)
: If the settings become unstable, turn the device on while holding down the encoder button . The screen should display EEPROM RESET 4. Troubleshooting & Performance Audio Quality
: Some external speakers may trigger interference or fail to output in stereo. If using external audio, high-quality shielded 3.5mm cables are recommended to minimize noise. Firmware Updates
: The ATS-20 is built on an Arduino-compatible platform (Si4732 chip). Many users flash "Advanced" firmware (like the Goshante firmware
) to add features like RDS (Radio Data System) or improved scanning. for the preset bands or more detail on flashing custom firmware
ATS-20+ Firmware Update Guide | PDF | Computer File - Scribd
This is a comprehensive, deep-dive manual for the generic ATS-20 / ATS-20P / ATS-25 series of All-Band Radio Receivers.
Because these devices are manufactured by various Chinese OEM brands (like C.Crane, Hanfong, or unbranded), official documentation is often sparse. This guide covers the hardware architecture, menu navigation, hidden features, and troubleshooting based on the standard SI4735/DSP chipset architecture used in these units.
Yes, there is a secret engineering menu that no printed ATS-20 radio manual includes.
How to access:
What you can adjust here:
Exit: Turn the radio off and on again.
