Documentation from Radiomuseum and community groups highlights changes between production runs:
While a complete, manufacturer-issued engineering schematic for the XHDATA D-808 is not publicly released in the standard user manual, the radio's architecture is well-documented by the hobbyist community through teardowns and technical analysis . The D-808 is built around a dual-PCB design (MCU/Screen and Receiver boards) centered on the Silicon Labs Si4735-D60 DSP chip Core Technical Architecture
The whip antenna was originally anchored only to the PCB, making it prone to snapping the solder joint. Newer versions add a stabilizing screw through the back case.
The is a highly-regarded portable digital radio known for its use of Digital Signal Processing (DSP) and high sensitivity across FM, SW, MW, LW, and AIR bands. Its internal design is centered around the Silicon Labs Si4735 DSP chip, which handles demodulation for all supported modes, including Single Sideband (SSB). Internal Architecture and Variations
The D-808 has a brick-wall filter at 6 kHz. On the schematic, locate the audio output path between Si4735 pin 23 (OUT) and the headphone jack. There is a series capacitor (C49) and a resistor to ground (R56). Changing C49 from 0.1uF to 0.47uF opens up the treble, making shortwave sound less "muffled."
D-808 Schematic !new!: Xhdata
Documentation from Radiomuseum and community groups highlights changes between production runs:
While a complete, manufacturer-issued engineering schematic for the XHDATA D-808 is not publicly released in the standard user manual, the radio's architecture is well-documented by the hobbyist community through teardowns and technical analysis . The D-808 is built around a dual-PCB design (MCU/Screen and Receiver boards) centered on the Silicon Labs Si4735-D60 DSP chip Core Technical Architecture xhdata d-808 schematic
The whip antenna was originally anchored only to the PCB, making it prone to snapping the solder joint. Newer versions add a stabilizing screw through the back case. The is a highly-regarded portable digital radio known
The is a highly-regarded portable digital radio known for its use of Digital Signal Processing (DSP) and high sensitivity across FM, SW, MW, LW, and AIR bands. Its internal design is centered around the Silicon Labs Si4735 DSP chip, which handles demodulation for all supported modes, including Single Sideband (SSB). Internal Architecture and Variations On the schematic, locate the audio output path
The D-808 has a brick-wall filter at 6 kHz. On the schematic, locate the audio output path between Si4735 pin 23 (OUT) and the headphone jack. There is a series capacitor (C49) and a resistor to ground (R56). Changing C49 from 0.1uF to 0.47uF opens up the treble, making shortwave sound less "muffled."
Loaded All Posts
Not Found Any Posts
VIEW ALL
Read More
Reply
Cancel Reply
Delete
By
Home
PAGES
POSTS
View All
RELATED ARTICLES:
TOPIC
ARCHIVE
SEARCH
ALL POSTS
Not Found Any Post Match With Your Request
Back Home
Sunday
Monday
Tuesday
Wednesday
Thursday
Friday
Saturday
Sun
Mon
Tue
Wed
Thu
Fri
Sat
January
February
March
April
May
June
July
August
September
October
November
December
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Just Now
1 Minute Ago
$$1$$ minutes ago
1 Hour Ago
$$1$$ hours ago
Yesterday
$$1$$ days ago
$$1$$ weeks ago
More Than 5 Weeks Ago
Followers
Follow
THIS PREMIUM CONTENT IS LOCKED
STEP 1: Share To A Social Network
STEP 2: Click The Link On Your Social Network
Copy All Code
Select All Code
All codes were copied to your clipboard
Can not copy the codes / texts, please press [CTRL]+[C] (or CMD+C with Mac) to copy
Table of Content