If you are using a protected 18650 battery, it is likely too long. It may not make proper contact or could physically damage the compartment. The radio is designed for standard, flat-top unprotected 18650 cells .
"All these receivers (including ETON G3) are no different, even the numbering of the elements on the board is the same. One can safely use the scheme of one to repair another." — Victor
The manufacturer Silicon Labs has made the full datasheet available online. You can find it on electronics documentation sites like AIPCBA or Datasheets.com by searching for . This is essential for advanced modifications or understanding the chip's pinout.
: Micro-USB port, blue or white backlight, "Synthesized Receiver" on the manual cover. Newer Version (2022+) xhdata d-808 schematic
To prevent switching noise from leaking into the sensitive RF stages, the schematic utilizes a mix of ultra-low-noise Low-Dropout (LDO) linear regulators (e.g., 3.3V and 1.2V regulators) rather than noisy buck-boost converters to power the digital MCU and the analog RF rails. 4. Hardware Revisions: Spotting the Differences
is a Digital Signal Processing (DSP) based receiver that relies on a dual-board architecture connected via a ribbon cable. XHDATA D-808 operation manual | The SWLing Post
The XHDATA D-808 relies on a hybrid architecture that combines a high-performance analog front-end with a powerful digital processing backbone. Unlike traditional superheterodyne radios that require complex intermediate frequency (IF) transformer alignment, the D-808 digitizes incoming RF signals early in the signal chain. The Signal Path If you are using a protected 18650 battery,
Check for cracked solder joints on the USB pins or a blown input protection diode. 4. Popular Schematic Hardware Modifications
Shows RDS, signal strength (RSSI), SNR (Signal-to-Noise Ratio), and frequency 1.2.3.
AM, FM, SSB (Single Sideband), and Upper/Lower Sideband (USB/LSB) selection. "All these receivers (including ETON G3) are no
You seem to be looking for a schematic diagram for the XHData D-808, a type of shortwave radio receiver.
: Trace the audio output lines from the Si4735, through the decoupling capacitors, straight to the amplifier IC inputs. Total Loss of Shortwave/FM Sensitivity
. Understanding the layout of this radio provides insight into why it remains a favorite among shortwave and DX (long-distance) enthusiasts. The Core Component: Silicon Labs Si4735 At the heart of the D-808’s schematic is the Silicon Labs Si4735 DSP chip
: It interfaces with the main microcontroller using an I2Ccap I squared cap C serial bus. The Microcontroller Unit (MCU)
If you are using the schematic to troubleshoot a broken XHDATA D-808, target these common components: No Audio but LCD Works