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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08 octombrie 2025
Xiegu G90 squawk at high volume
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On the G90 Groups is an interesting discussion about an audio feedback (squawk) at high volume . The subject is now locked but I think it w...
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Baofeng DM-32 Desktop Charger YPT-C21A
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Baofeng DM-32 desktop "charger" isn't a proper charger but a desktop stand with a charging indicator. The charging circuit is...
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"My SD card is not detected by the Marauder"
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When using Marauder, an SD card it's a must. Unfortunately, the smallest SDcards i have are no less than 64GB so, according to the auth...
25 iulie 2025
A GNSS Disciplined CTCSS, DCS and DTMF generator based on ESP32
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Let me present a project to both show off and because it might be useful to others, a GNSS disciplined CTCSSDCS and DTMF generator. Wh...
16 iulie 2025
Debugging ESP32 Timer Interrupts: A Tale of API Compatibility
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The Silent Signal Generator Have you ever spent hours debugging code that should work but doesn't? Recently, I faced this exact c...
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