Digital modes. One station.
FT8, FT4 and FT2 for receiving, transmitting and managing contacts.

Decodium 4.0 Core Shannon brings together digital modes, radio control and operating tools. An interface for monitoring activity, decoding and making contacts.
FT8, FT4 and FT2 for receiving, transmitting and managing contacts.
A waterfall and panadapter to visualise signals; Live Map, DX Cluster and PSK Reporter to explore activity.
CAT control, decode history, ADIF export and a UDP connection to your logbook.
Features, integrations and operating conditions, with direct links to project sources.
The connection guideFT8, FT4 and FT2 belong to a wider family: the project also documents Q65, MSK144, JT65, JT9, JT4, FST4, FST4W and WSPR. Available capabilities depend on the decoding backend, platform and build, so check the documentation for the version you have installed.
Source & documentationCAT handles tuning, mode selection and other radio commands; audio carries the signal to receive or transmit. DecoPort brings control and audio together over a network for compatible radios and clients. It does not provide wideband IQ: configuration and available capabilities follow the project documentation.
Source & documentationLocal logging, ADIF export and QSO forwarding help preserve contacts and pass them to compatible tools. Decode history supports your operating workflow, while PSK Reporter and DX Cluster help you follow activity. Each service has its own configuration, separate from the radio’s audio and CAT connections.
Source & documentationIn builds that include it, the SSTV workspace combines reception, transmission, an image Studio and Gallery through Decodium’s audio and CAT/PTT paths. The documentation distinguishes implementation from field validation: check mode availability and interoperability for the version and station configuration you intend to use.
Source & documentationChoose FT8, FT4, FT2 or CW and turn on the audio. Move the tuning slider: the signal grows as you centre it and fades as you move away. In CW, find the different stations.
Synthetic audio · simulated reception and messages Discover DecodiumSignal centred.
A signal is waiting for you.20 m tuning references: Decodium ↗