The Si4732 is a popular radio receiver chip used in a variety of hobbyist and consumer multi-band SDR radios, including the ATS-25 series.
The Si4732 is a high-performance digital tuner radio chip originally developed by Silicon Labs. Thanks to its high sensitivity, digital signal processing (DSP), and support for AM, FM, SW, LW, and SSB bands, it has become the core component of many popular multi-band radio receivers like the ATS-25 MAX.
These software-defined radio (SDR) devices are widely favored by amateur radio operators (HAM) and shortwave listening enthusiasts.
On this page, you will find user manuals, firmware updating guides, and setup instructions for various Si4732-based radio receivers. Because these devices are often produced by multiple generic electronics manufacturers and DIY hobbyist groups, navigating their featuresāsuch as direct frequency input, bandwidth filtering, and touch-screen configurationācan be complex. Our manuals aim to simplify the setup process for your Si4732 radio.
Latest manuals from manuals+ curated for this brand.
Common questions about manuals, registration, and support for this brand.
The Si4732 is a digital tuner radio chip that serves as the core processor for various multi-band (FM/AM/LW/SW/SSB) software-defined radio (SDR) receivers, such as the ATS-25 series.
You can typically tune frequencies using the rotary encoder knob or by pressing the FREQ key on the touch screen for direct numeric input.
The setup menu allows users to configure basic parameters, reset encoder settings to their default values, manage screensaver timers, and view firmware information.
Yes, many Si4732-based receivers support custom firmware flashing via their USB Type-C interface, though instructions vary by the exact manufacturer.
Ensure the device's internal lithium battery is fully charged via the USB-C port. If it remains unresponsive, you may need to perform a factory reset by holding the reset button during startup.