DIGITAL COMMAND CENTER — KM4SPL
Projects: https://km4spl.com/projects/
Browser demo: https://km4spl.com/demo/

BROWSER DEMO
No radio is required. Open Settings > Profiles to enter your callsign and grid.
Profiles autosave in this browser. Radio setup and preferences also persist.
Choose FT8, FT4, JS8, WSPR, PSK31, or RTTY beside the band selector.
Green waterfall marker: receive audio offset within the selected dial frequency.
Red waterfall marker: transmit audio offset. Click for RX; Shift-click for TX.
Drag either marker or type a frequency in the RX/TX fields.
RX Frequency keeps messages within +/- 50 Hz of your selected RX offset.
Double-click a CQ station to enable simulated TX. This can be disabled in
Settings > System > Demo preferences. Next cycle advances the simulation.
Stop All TX ends simulated transmission and disables automation.
Contacts are simulated. The session log clears on reload.
WSPR demonstrates receive-only propagation beacons, not two-way contacts.
The TX Drive / ALC slider is beneath the safety meters. Auto ALC limits drive.
Use the minus buttons to collapse the waterfall or map for more reading room.

MULTI-MODE DECODER SOURCE PREVIEW (NEW)
Download: https://km4spl.com/downloads/Digital-Command-Center-Decoder-Preview.zip
Setup: https://km4spl.com/projects/decoder-setup.txt
Requires Python 3.11+ and WSJT-X / JS8Call / fldigi as appropriate.
Extract the ZIP, open a terminal in its dcc folder, and follow DIGITAL_MODES.md.
FT8 / FT4 / WSPR: station audio or mono 16-bit WAV recordings, using WSJT-X.
JS8: receive messages from JS8Call's TCP API.
PSK31 / RTTY: receive text from fldigi's local XML-RPC API.
This source preview is separate from the older Windows Alpha executable.
Physical radio reception and full JS8Call/fldigi audio playback need field tests.

WINDOWS ALPHA 1 (EARLIER PREVIEW)
Download: https://km4spl.com/downloads/Digital-Command-Center-Windows-Alpha.zip
Windows 10/11. Extract the ZIP and run DigitalCommandCenter.exe.
This is a receive-only preview. CAT and FT8 decoding are still being completed.
The browser demo develops independently and has newer features than this ZIP.
The download is not updated just because the online demo changes.

VERIFY THE DOWNLOAD (POWERSHELL)
Get-FileHash .\Digital-Command-Center-Windows-Alpha.zip -Algorithm SHA256
Expected SHA-256:
5fa3a94d5a9bf2e4241b8f09da39894961627e82bfc4ec02bafd9bc1e566bfa1

Raspberry Pi: source setup is available; no prebuilt package is published yet.