If you see "X2" in the model name, you're getting a more polished version with better software and hardware stability.
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Open your flashing software (like ESP32 Flash Tool) and select the correct COM port.
Rotate the tuning dial clockwise to increase frequency, or counterclockwise to decrease it.
The boot screen will display the current firmware version (e.g., Harduino, ATS Community, or Volos firmware). ats-25 radio manual pdf
Many versions of the ATS-25 run open-source firmware community upgrades (such as those modified by PU2CLR or specialized Russian/European amateur radio groups). Upgrading your firmware can unlock hidden features like: Spectrum analyzer/waterfall displays. Improved scanning speeds. Extended frequency ranges. Expanded RDS data decoding for local FM stations.
For standard broadcast stations, use AM or FM mode. For amateur radio operators or utility signals, tap the button to cycle through USB or LSB . Adjusting the Bandwidth (BW)
Used by HAM radio operators above 10 MHz (e.g., 20m, 15m, 10m bands) and commercial marine/aviation traffic. Fine-Tuning SSB (BFO)
Tap the key on the touchscreen to select your resolution. If you see "X2" in the model name,
The ATS-25 relies on a highly integrated architecture. Maximize your hardware performance by understanding its core components and layout. Core Architecture
The open-source nature of the Arduino-based firmware is one of its most attractive features. Advanced users can modify or upload custom firmware to change the radio's behavior, add features, or improve performance. However, the official manual primarily focuses on standard operation, making it the best starting point for most users.
The touchscreen interface is divided into persistent zones for efficient operation.
Functions as a tuning dial. Rotate to change frequencies or navigate menus. Press the knob inward to change tuning step sizes or confirm selections. The boot screen will display the current firmware version (e
versions) is a crucial, high-quality guide necessary to navigate this complex SDR-based receiver. Here is a full review of the ATS-25 radio and its documentation. 1. Manual Quality and Content (The PDF/Printed Manual) Comprehensive Coverage:
Because there are many clones of the ATS-25, there isn't one official "global" manual. However, you can find various English PDF versions provided by resellers on forums like or by searching for "ATS-25 Si4732 manual English PDF" on GitHub. Why is the screen unresponsive?
A more powerful version of the classic ATS-25, the ATS-25X2 is built on the same SI4732 + ESP32 core, but with hardware refinements and improved capabilities. Key features include:
Before diving into the operational manual, it helps to understand what hardware drives the ATS-25. Knowing these specs ensures you use the correct charging equipment and antennas. Si4732 (Advanced DSP architecture) Display: 2.4-inch color TFT touch screen Frequency Range: FM: 64–108 MHz (with RDS capability) LW: 153–500 kHz MW: 520–1710 kHz SW: 1730 kHz–30,000 kHz (1.7.3 MHz to 30 MHz) SSB: Single Sideband support (USB/LSB) up to 30 MHz
: For those updating firmware (e.g., version 4.10 Air), a step-by-step installation and activation process is detailed on Facebook Community Pages Key Technical Specifications Receiver Type Si4732 DSP Full Band Receiver Frequency Range : Supports FM (64–108MHz) and AM (MW, LW, SW). : 2.4-inch color touch screen and rotary encoder.
Detailed instructions on using the VFO knob and touchscreen to change bands, modes (AM, SSB, CW, FM), and bandwidths. Digital Decoding: Explanations for setting up FT8, FT4, and CW decoding. Advanced Features:
