YO3HJV
Hamradio, Electronics& Stuff
XIEGU G90 Collection
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Full schematics
Block Diagram and Schematic
G90 Faults and mitigation
Reflashing the Bootloader
Audio Amp Gain Mod
Power supply section
SMPS regulators instead of LDO
"COMM LOST" Error
MCU and DB9 reference
External Speaker Mod
Firmware Programming Cable Schematic
High Resolution Pics
Power Output vs Supply Voltage
Front Panel Backlight
ATU issues
ICOM RJ-45 Microphone with G90
Disassembly the Front Panel of G90
VFO encoder selection
On screen voltmeter
Repair Manual by XIEGU
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21 April 2025
Project "Router" - 1
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First is first... const int uartPins [ 4 ][ 2 ] = { { 3 , 1 } , // PC: RX=GPIO3, TX=GPIO1 (default Serial) { 16 , 17 } , // U_1...
17 April 2025
ICOM IC-703+ de vanzare / For Sale
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SOLD! Primul meu ICOM IC-703+ este de vanzare! Dupa un eveniment distructiv accidental (o supravoltare datorita functionarii defectuoase a ...
16 January 2025
Xiegu G90 - O defectiune tipica
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Micul transceiver Xiegu G90 este unul foarte indragit de radioamatorii carora le place sa iasa in natura. Forma sa compacta, cei 20 de W i...
28 November 2024
433 MHz LoRa SAW Bandpass Filter
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The LoRa network that a team of radio amateurs in Bucharest is testing is - for various reasons - deployed in the 433 MHz ISM band. A check...
18 October 2024
LoRa APRS with Meshtastic DevBoard
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After I played a little with my Meshtastic Development Board I previously made (and write about) I decided it will be nice to give it a try...
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