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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19 April 2021
ICOM External Antenna Tuner Connector & Stuff
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I had some projects to made and those involve external ATU connectors for ICOM radios; I think it's better to have some informations her...
03 April 2021
Arduino PTT Sequencer for Xiegu G90
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ATTENTION!!! This was made and tested on my Xiegu G90 and it is working very smooth and nice. However, your mileage can vary from similar ex...
2 comments:
01 April 2021
Simple QRO sequencer for Xiegu G90
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I saw some XPA-125 destroyed and I heard about few Xiegu radios with PA burned due to "hot switching". The correct way to switch t...
23 March 2021
"Tactical antennas"? Well...
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In the last year, the ham addressed market was flooded with a military style VHF/UHF antennas. The retailers are targeting the preppers wh...
2 comments:
24 February 2021
Software defined lab power supply
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Sometimes in the lab there is need to monitor the power parameters during some period of time and put it on a nice graph. Because I couldn...
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