← All worlds
01 / THE WORLD OF SIGNALS

Decodium.

From weak signals,
new connections.

FT8FT4FT2CORE SHANNON
9H1SR / RADIO LAB↓EXPLORE
01YOUR OPERATING DESK

Inside the signal.
At the heart of the QSO.

Decodium 4.0 Core Shannon brings together digital modes, radio control and operating tools. An interface for monitoring activity, decoding and making contacts.

DECODIUM 4.0 / CORE SHANNONINTERFACE
Screenshot from the project repository. The interface may vary between versions.↗ Enlarge
01

Digital modes. One station.

FT8, FT4 and FT2 for receiving, transmitting and managing contacts.

02

Activity takes shape.

A waterfall and panadapter to visualise signals; Live Map, DX Cluster and PSK Reporter to explore activity.

03

From your radio to your log.

CAT control, decode history, ADIF export and a UDP connection to your logbook.

Features described in the project documentation. CAT compatibility and options depend on the platform and configuration. Read the documentation
DETAILSINSIDE THE PROJECT

The possibilities,
in detail.

Features, integrations and operating conditions, with direct links to project sources.

The connection guide

Fork: Salvatore Raccampo · 9H1SR and Martino · IU8LMC. From the WSJT-X / Decodium family. Acknowledgements

01Digital modes, beyond FT8.

FT8, 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 & documentation
02CAT, audio and the DecoPort bridge.

CAT 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 & documentation
03From each QSO to your other tools.

Local 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 & documentation
04SSTV: a workspace for images.

In 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 & documentation
02THE LABORATORY

Find the signal.
Hear the difference.

Choose 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 Decodium
9H1SR / SIGNAL LABSIMULATION
VFO A14.07400MHz
FT8 · 14.074 MHzOne signal
20m
100%100%

Signal centred.

40%
EXAMPLE MESSAGES
DECODE / READY · FT8
A signal is waiting for you.

20 m tuning references: Decodium ↗

NEXT FREQUENCY / 02

The connection continues.

Give every QSO a home with DecoDXLog.

DecoDXLog
THE NEXT CONTACT STARTS HERE

Your next CQ
starts here.

Download the software

Windows · macOS · Linux

Enlarged Decodium interface
SECRET CONTACT / 9H1SR73.

Greetings from Malta.

You found the station’s little secret. The best part of radio is the person on the other side of the signal.

− − · · ·   · · · − −
CQ DE 9H1SR / JM75fv