EU1KY Analyzer 2026 v2.1
Version 2.1 is the current stable release of the multilingual firmware for the EU1KY antenna analyzer.
Supported languages
- Polish
- English
- German
- Russian
Main changes in v2.1
- redesigned and unified user interface
- improved measurement screens and data presentation
- improved calibration workflow
- updated single-frequency measurement functions
- updated SWR and impedance graph presentation
- improved tools and system menus
- improved user interface icons and layout
- various stability and usability fixes
- CW decoder removed from the public release due to insufficient decoding reliability
- documentation-only encoder screenshot function removed from the public firmware
- redundant green status indicator removed from the Files menu tile
Firmware
The firmware is intended for the STM32F746G-DISCO based EU1KY antenna analyzer.
Two firmware formats are provided:
.bin– ready-to-flash binary firmware.hex– Intel HEX firmware image
Documentation
The first part of the user documentation is now available in Polish and Russian.
This release currently includes:
EU1KY-PL_2026_V2.1_Manual_Part_1_Measurement.pdf– Polish user manualEU1KY-RU_2026_V2.1_Manual_Part_1_Measurement.pdf– Russian user manual
Part 1 covers the Measurement section of the analyzer, including single-frequency measurements, SWR and impedance sweeps, multi-band measurements, antenna tuning and RF component measurements.
This is not yet the complete manual for all functions of EU1KY Analyzer 2026.
Further parts of the documentation are planned and may cover additional analysis functions, tools, settings, diagnostics, calibration, metrology and other features available in the firmware.
Contributions to the documentation are welcome. If you use EU1KY and would like to help with technical review, screenshots, descriptions, translations or further chapters, please open an Issue or contact the project maintainer.
Source code
The complete source code required to build this firmware is included in the repository.
A separate minimal source archive is also attached to this release for convenient offline use.
Important
After installing a new firmware version, verify your calibration data before performing precision measurements.
Calibration results are specific to the individual analyzer hardware.
A low SWR alone does not confirm antenna efficiency. Measurement results should always be interpreted together with impedance, calibration status and the actual measurement setup.
Feedback
Testing reports, bug reports and suggestions are welcome, especially from users with different EU1KY hardware configurations.
Feedback concerning the Polish and Russian manuals is also welcome. Corrections and help with further documentation will be appreciated.