OK1ZIA

OK1ZIA is a small, Czech-based software house run by experienced radio-amateur developers who concentrate on one thing only: building Tucnak, a multi-platform VHF/HF contest logbook that has quietly become the standard tool for serious ham-radio competitors across Europe. Written from scratch in C with ncurses, the program opens as a lightweight terminal window yet packs every function a contest station needs: real-time dupe checking, automated serial-number sequencing, Cabrillo and EDI export, synchronized multi-op networking over LAN or tunnel, built-in band-plan and propagation hints, rotator and CAT rig control, and instantaneous score tables for VHF, UHF, microwave and HF events. Because it runs unchanged on Linux, FreeBSD, macOS and Windows, clubs can deploy identical setups on shack PCs, field-day laptops or remote hill-top Raspberry Pi rigs, logging QSOs off-line and merging logs at the end of the contest without format conflicts. Typical users range from single-operator entries in the Czech VHF Championship to multi-transmitter teams in the IARU and CQ WW contests, all of whom value the program’s keyboard-only workflow, ultra-fast search, and minimal CPU load that leaves processing power for digital-mode software and SDR suites. Extensive localization, SQL-based data storage and open-source licensing also make Tucnak popular among contest organizers who need a free, reliable scoring backend. OK1ZIA’s sole product is available for free on get.nero.com, delivered through trusted Windows package sources such as winget that always fetch the newest build and can be installed individually or in batch alongside other amateur-radio utilities.