The XHDATA D-808 is heavily based on the open-source hardware principles popularized by the "PU2CLR" Ricardo Lima Caratti Arduino SI473X library. This is a unique situation in commercial radio. Because the core technology is open, the community is deeply invested in the circuit design.
FM (64–108 MHz), LW (150–450 kHz), MW (520–1710 kHz), SW (1.7–30 MHz), AIR (118–137 MHz) Tuning Steps SSB minimum step is ; independent USB/LSB reception Power Source 18650 Li-ion battery , rechargeable via USB 500 stations across 50 pages Special Features xhdata d808 schematic extra quality
is a real, popular portable radio. However, the official manufacturer does not release public schematics for this model. Any listing claiming “original” or “extra quality” schematics is almost certainly a counterfeit, a low-resolution scan, or a re-packaged diagram from a similar radio (e.g., Sihuadong R-108, which shares some design DNA). The XHDATA D-808 is heavily based on the
: Technical diagrams and PDF schematics can be found on community platforms like Radioscanner.ru and through user-contributed files in groups like the Si47XX for Radio Experimenters Key Performance Specifications FM (64–108 MHz), LW (150–450 kHz), MW (520–1710