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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23 August 2023
Do you need to test your COM port?
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As a ham or just an amateur electronist, sometimes you might need to test your COM/RS232 serial port. A nice utility freeware is Hercules . ...
3 comments:
31 July 2023
The tale of the two QCX...
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The first one I got it as a present from my friend Dexter, YO3HEX. Came in a lot of envelopes as a kit and, as I am always ready to make so...
30 July 2023
A new QCX
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I finished my second QCX, this time a QCXmini for 20m band. Did some calls today, July 30, 2023 on my vertical Hustler 4BTV. Ridiculous:
60m band in Romania
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The 60m band (5 MHz) in Romania is available to YO radio amateurs under special authorization. In the National Frequencies Allocation Tabl...
2 comments:
15 June 2023
Counterpoise? On the Use and Abuse of a Word - L. B. Cebik, W4RNL
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L. B. Cebik is my Antenna Guru! He is SK now but he wrote a lot of articles about antenna, introducing the antenna modelling into the ham wo...
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