Press the button to toggle between standard AM and SSB. Select USB (Upper Sideband) for frequencies above 10 MHz. Select LSB (Lower Sideband) for frequencies below 10 MHz. Fine Tuning (BFO)
The ATS-20 radio is a popular, compact, and versatile shortwave radio receiver. Here's some general information about it:
This is likely local electronic interference. Turn off nearby plasma TVs, computer monitors, or cheap USB wall adapters. If you are charging the radio while listening, unplug the charging cable.
The ATS-20 (often utilizing the SI4732 chip) is a highly capable, budget-friendly, and portable shortwave radio receiver. It is a favorite among Amateur Radio operators and Shortwave Listeners (SWL) because it packs All-Band coverage—including Single Sideband (SSB)—into a compact, aluminum housing.
platform, these radios offer sophisticated features like Single Sideband (SSB) reception in a pocket-sized aluminum case. Core Technical Specifications ats-20 radio manual
user wants a comprehensive article about the "ATS-20 Radio Manual". I need to cover all aspects of the radio: manuals, specifications, features, operation, troubleshooting, etc. The search results include a wide range of resources, including manual PDFs, GitHub repositories, and forum discussions. I should open those to gather detailed information. seems the tool is indicating that the cursor [0] is invalid. The cursor IDs might be out of range. I need to check the valid cursors. The system might have changed. I should re-issue the search to get fresh results and then open them. search results show various resources. I need to open them to get the content. The cursors are valid now. I'll open the most relevant ones. opened pages provide a wealth of information. I'll continue opening more relevant pages. now have a comprehensive set of search results covering manuals, firmware, troubleshooting, and specifications. I'll use these to write a detailed article. The article will cover the ATS-20 radio, its hardware, firmware, operation, and troubleshooting. I'll structure it with sections for introduction, hardware overview, the manual and firmware, step-by-step operation, advanced configuration, common issues and fixes, and a conclusion. I'll cite the relevant sources throughout. you've just picked up an ATS-20 or ATS-20+ radio, welcome to a truly unique device that lives at the intersection of shortwave listening and open-source hardware hacking. This guide will serve as a comprehensive manual, helping you navigate the complexities of this tiny but powerful SDR.
The main rotary encoder for changing frequency, navigating menus, and selecting options. Click to select.
Computers, LED lights, phone chargers, and televisions create heavy Electromagnetic Interference (EMI). Keep your ATS-20 away from these devices to lower the background noise floor.
If you want to customize your device further, you can look into the open-source community online. Many enthusiasts update the ATS-20 firmware via the Arduino IDE to unlock custom band plans, smoother step adjustments, and better screen layouts. Press the button to toggle between standard AM and SSB
Within ten minutes, she tuned to 7.090 MHz USB and heard a net operator: “…repeat, shelter open at county high school. Bring water and blankets.”
Here’s a common layout based on popular community builds:
Most ATS-20 units use a and a few tactile buttons for navigation.
5V DC input for charging the built-in 3.7V lithium battery. 3. Basic Operation Guide Fine Tuning (BFO) The ATS-20 radio is a
| Control | Function | |---------|----------| | | 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) |
Flip the toggle switch on the back/top panel or click the volume wheel open.
Allows advanced configuration of receiver sensitivity.
Is your radio built with an or an ESP32 board inside?