A Linux-native client for FlexRadio Systems transceivers.
AetherSDR brings FlexRadio operation to Linux without Wine or virtual machines. Built from the ground up with Qt6 and C++20, it speaks the SmartSDR protocol natively and aims to replicate the full SmartSDR experience.
What's new in 26.9.2
67 merged changes from 15 human contributors and AetherClaude, plus two Dependabot updates within that total, expand receive options and multi-band skimming while improving station peripherals, CW, Icom and Hermes-Lite 2 reliability. New receivers and multi-band skimming - Four concurrent TCI DAX IQ subscriptions — several CW skimmers through one TCI server let compatible Flex setups feed several skimmers through one TCI server. Receivers on the same panadapter share its IQ stream; four independent band spectra require four panadapters (#4951). - Experimental ANAN-G2 reception adds openHPSDR Protocol 2 discovery, a single receive path, spectrum and audio, with live tuning and zoom. This phase is receive-only; transmit remains a future phase (#5143). - Experimental RTL-SDR USB reception adds a single slice and panadapter with basic AM, FM, SSB and CW demodulation on builds with the required RTL libraries. Availability varies by package; selectable sharp passband filtering is not yet implemented (#4862). Amplifiers, wattmeters and operator workflow - SPE floating front panel adds a live amplifier LCD mirror and guarded front-panel keys (#5393). - TelePost LP-100A support displays the wattmeter's readings over local serial or a serial-to-network proxy. This first version is read-only (#5320). - Runtime Monitor gains process-memory history (#5397). - PGXL and TGXL startup synchronization improves initial status presentation (#5337, #5339). PA current appears when PTT originates at the radio (#5307). - The connection panel stays visible at startup (#5334), CTCSS choices are easier to read (#5259), and radio-specific settings and Flex-only zoom controls are gated to compatible backends (#5299, #5166). KiwiSDR - The public-receiver browser reads its directory from the AetherSDR CDN mirror (#5445). - The directory-mirror Worker is included in the repository, and stale directory data is advisory so operators can continue browsing available receivers (#5449). CW - Client-side recordings capture sent CW instead of microphone input (#5278). - CWX sidetone follows the keyer's scheduled edges (#5129). - The P/CW pane gains APF toggle and level controls (#4883). - APF wheel input is ignored while APF is disabled (#5163). - CW settings remain stable on backends that do not echo them (#5380). Audio and Flex controls - Controller AGC-T input reaches the correct level control with AGC off (#5387). - Active-slice ALC and TX waveform meter routing are corrected (#5344). …
Yes. AetherSDR is free and open-source software released under the GPL-3.0 license.
What is the latest version of AetherSDR?
The latest version is 26.9.2, released on Sep 6, 2026.
Is it safe to download AetherSDR?
The download button links to the official installer published on github.com, the same file Windows Package Manager installs. You can verify the downloaded file by comparing its SHA-256 checksum with 665152a823d46f7930e31267d5a5a823bda61c2d1d158ab796b9717c139a219f.
Which Windows versions does AetherSDR support?
AetherSDR runs on Windows and is available for 64-bit (x64) systems.
How do I install AetherSDR silently?
Run the offline installer with "AetherSDR-v26.9.2-Windows-x64-setup.exe" /VERYSILENT /SUPPRESSMSGBOXES /NORESTART /SP- /CURRENTUSER, or install it with Windows Package Manager: winget install --id=AetherSDR.AetherSDR -e --silent.
How do I uninstall AetherSDR?
Open Settings › Apps › Installed apps, find AetherSDR and select Uninstall. From the command line, run winget uninstall --id=AetherSDR.AetherSDR -e.
Alternatives to AetherSDR
Other Music & Radio programs for Windows from different developers.