RimuSDR Release Notes

Enhancements

• Flex Control Knob is now fully supported.
• Antenna Genius control is now fully supported.
• Waterfall Performance Boost - Reduced CPU usage across all platforms.
• RX buffer flush + Opus suppression during TX for cleaner transitions.
• Added offline license deactivation process.
• Spot Levels Increased - Up to 15 levels.
• MIDI Improvements - Better device detection, loopback filtering, new actions, UI refinements.
• SmartLink Login Improvements.
• New statistics dialog + improved audio path.

Platforms

• Support for full RimuSDR suite on Ubuntu 24.04 and 26.04 on aarch64 (deb and AppImage).
• Support for Fedora 44 (rpm package).
• Fixed Windows build filename format.
• Discontinued build for Fedora 42 which is EOL.

Fixes

• Multiple panadapter simultaneous open issue fixed.
• Diversity panel now shows gain/phase values.
• Fixed Smartlink caching.
• Waterfall time-scale drag regression resolved.
• Spectrum fill setting now saves correctly.
• MIDI device detection fixed on Windows.
• Spot overflow handling corrected.
• FM OPT + XVTR settings now persist.
• FM property changes now correctly update the slice flag and RX panel.

Fixes

• RimuSDR : Fix Slice Audio panel so that it's sized correctly for Diversity.
• RimuSDR : Fix Slice Tuning flag passband z-order when two slices are on the same frequency.

Enhancements

• RimuSDR : Added DVK panel.
• RimuSDR : Added MIDI controller support, including support for Lynovation CTR2 controllers (https://ctr2.lynovation.com/).
• RimuSDR : Sub-band display reworked to more closely match the SmartSDR+ behavior while remaining fully client-side.
• RimuSDR : Customizable filter widths implemented natively, with no dependency on SmartSDR+ licensing.
• RimuSDR : Diagnostics dialog now includes a full radio feature list for easier troubleshooting.
• RimuSDR : Change slice panel behavior to allow audio, DSP, Mode, RIT, DAX panels to remain open simultaneously.
• RimuSDR : Remove digital filter offset from DSP slice tuning panel to match SmartSDR.
• RimuDAX : Enhanced debug level logging.
• RimuCAT : Enhanced debug level logging.
• APILayer : Updated protocol layer to align with FlexLib 4.2.

Fixes

• RimuSDR : Improved Slice Tuning flag behavior for smoother keyboard arrow-key tuning.
• RimuSDR : Settings dialog hardened for better reliability across distros.
• RimuSDR : Fixed performance issue with large number of spots.
• RimuSDR : Right side panel button states and panadapter splitter position were not being saved.
• RimuSDR : Fixed panadapter splitter behavior to prevent panel collapse.
• RimuSDR : Fixed TX Band Settings dialog to display correct columns for FLEX-6300.
• RimuSDR : Fixed font size of buttons in slice tuning flag.
• RimuSDR : PC Audio gain value is not stored in settings.
• RimuCAT : Added validation to ensure a Slice is selected before saving.
• RimuDAX : Resolved potential driver-handling edge cases.

Enhancements

• RimuSDR : Added trial mode for downloads. Trial mode restricts RimuSDR users to 80M and no TX, allowing a trial before purchasing a license.
• RimuSDR : Added FreeDV support. Running FreeDV Flexradio AppImage will automatically add slice modes FDVU and FDVL to RimuSDR.
• RimuSDR : Implemented Quick Audio recording/playback.
• RimuSDR : Improved Sub-Band Display, added IARU regions sub-band selection.
• RimuSDR : Added USB Cable menu option.
• RimuSDR : Improved SmartLink authentication speed, increased timeout for slower networks.
• RimuSDR : Added selected global profile to application title.
• RimuSDR : UI adjustments to status bar, contrast settings, color theme.
• RimuCAT : Added protocols: Passthrough, N1MM Spots, Winkeyer, ORTP (note these 4 protocols have received minimal testing).
• RimuCAT : Added experimental .deb builds for arm64.
• RimuCAT : Added RPM builds for Fedora 42, Fedora 43, Rocky 9, Rocky 10.

Fixes

• RimuSDR : Minor UI adjustments to status bar.
• RimuSDR : Mode selection via profile : Selecting a mode (Phone/CW) using a profile does not trigger the P/CW panel to toggle.
• RimuSDR : Keyboard tuning causes VFO to drift 1 Hz.
• RimuSDR : Slice flag sliders jump 3 values when using the mouse wheel.
• RimuSDR : Forcibly disconnected in multiFLEX mode would cause receive audio to be silently absent on reconnect.
• RimuDAX : TX audio channel could become permanently stuck in the Busy state on some launches.
• RimuDAX : Connecting RimuDAX to a radio that was already using a PC microphone (Remote Audio) would force-enable DAX, causing microphone audio to be permanently lost if the user subsequently disabled DAX from the radio panel.
• RimuDAX : Prevent Linux from auto-switching audio defaults upon audio module load.
• RimuCAT : SIGSEGV when deleting a port.
• APILayer : Active slice was being determined incorrectly.

Enhancements

• RimuSDR : Added keyboard shortcuts.

Fixes

• APILayer : Fix locale issues for floating point conversions.
• RimuSDR : Add guards against zero bandwidth in waterfall frequency settings.
• RimuSDR : Correct input device index validation in PulseAudioEngine to allow auto-select.
• RimuSDR : Enhance panadapter bandwidth handling and add startup telemetry logging.
• RimuSDR : Gracefully handle network connectivity issues during license activation.
• RimuSDR : Radio Setup TX tab Interlock Timeout can't be adjusted correctly.
• RimuCAT : Fix port disconnection when changing bands.

Initial Release

• First public release of the RimuSDR suite including integrated DAX and CAT components.