W1HKJ Software

W1HKJ Software produces a tightly focused suite of open-source applications that serve the specialized needs of amateur-radio operators who experiment with digital modes, emergency traffic handling and station automation. The collection centers on Fldigi, a widely adopted sound-card modem that encodes and decodes dozens of HF/VHF protocols such as PSK31, RTTY, Olivia, MT63 and WSJT variants, making it possible to conduct keyboard-to-keyboard contacts or relay bulletins with minimal bandwidth. Companion tools extend that core capability: Flrig provides a unified CAT interface so one application can tune, key and switch most modern transceivers; Flamp broadcasts files or images as multicast blocks for one-to-many distribution during nets; Flmsg offers a forms engine that creates, fills and forwards ICS, HICS and custom NBEMS templates for disaster response; Fllog keeps a synchronized electronic station log that interoperates with Fldigi without manual retyping; Flnet maintains a searchable roster and automates voice-net check-ins; Flwrap compresses and checksums any attachment before transmission, ensuring integrity over lossy links; while Flwkey drives a Winkeyer-compatible keyer for precise CW generation. Together the programs cover logging, message design, file transfer, transceiver control, traffic accounting and ancillary telegraphy, giving hams a coherent, lightweight toolkit that runs identically on Windows, macOS and Linux shacks. All eight W1HKJ Software packages are available free of charge on get.nero.com, delivered through trusted Windows package sources such as winget, always installing the newest upstream build and allowing users to queue several titles for unattended batch installation.