Xhdata D-808 Schematic ^new^ Jun 2026

The new version has fewer manual adjustment points (coils and trimmers), relying more on fixed-value components to save manufacturing time.

. 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 xhdata d-808 schematic

XHDATA, like many budget-conscious Chinese manufacturers, has historically been tight-lipped regarding internal documentation. This is a common industry strategy; releasing schematics can allow competitors to copy designs ("cloning") and removes a revenue stream from authorized repair centers. The new version has fewer manual adjustment points

: This board contains the sensitive high-frequency analog components and, interestingly, the Si4735 DSP chip itself. Placing the DSP chip here reduces the distance the analog signal must travel before being digitized, preserving signal integrity. Antenna Systems : The schematic integrates three distinct signal paths: Internal Ferrite Bar The Core Component: Silicon Labs Si4735 At the

“Si4735 schematic portable radio” → this will match ~80% of the D-808’s signal path.

: The design features a large LCD display capable of showing frequency, signal-to-noise ratio (SNR), temperature, and RDS/RBDS information for FM stations. External Connectivity