screen. Some units in this era introduced the MV04 PCB (upgraded from MV02), which modified the integrated battery management and charging setup. 2023 Revision: This latest hardware version introduced USB-C charging
Never try to listen to weak Shortwave or Airband signals while the radio is plugged into a cheap wall charger. Cheap switch-mode power supplies emit massive amounts of Radio Frequency Interference (RFI).
. Instead, "updates" for the D-808 have arrived as distinct hardware revisions over the years. The Evolution of "Firmware" Through Hardware
To put it directly:
utilizes the popular digital signal processing (DSP) chip to achieve its impressive receiver capabilities. Unlike some high-end software-defined radios (SDRs) or more recent Chinese radios that allow for user-installed firmware updates via USB-C, the XHDATA D-808 is designed as a standalone consumer unit.
. However, unlike modern software-defined radios or smartphones, XHDATA D-808 does not support user-accessible firmware updates
port for charging and a blue or white backlight. This version is often cited for having better AM performance compared to some later batches. 2021/2022 Revision: xhdata d-808 firmware update
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“The D-808 uses a masked ROM microcontroller. Firmware is programmed at the factory and cannot be rewritten by users. New production batches may have improved software, but existing units cannot be updated.”
Since its release, the D-808 has seen several firmware iterations. Users have reported the following versions: screen
Instead of software versions, the D-808 is categorized by physical manufacturing updates:
If the microprocessor hangs while scanning, corrupt memory might be the culprit.
Press and hold the button to toggle the USB charging function ON or OFF . The DIY Alternative: Arduino and the Si4735 Cheap switch-mode power supplies emit massive amounts of
You can distinguish between the old and new models without opening the radio:
| Revision | Approx. Period | Known Changes | |----------|----------------|----------------| | v1.0 | 2017-2019 | Original release, had a squelch issue on SSB and occasional display lag. | | v2.1 | 2020-2021 | Improved SSB stability, changed AGC behavior, fixed some display bugs. | | v3.0 | 2022+ | Better sync detection, reduced birdies on certain bands, different LCD controller. |