Home

AetherSDR Wiki

Native. Open. Yours.

Welcome to the AetherSDR documentation. AetherSDR is an open-source, Linux-native client for FlexRadio Systems transceivers.

Getting Started

• Installation — Download and install on Linux, macOS, or Windows
• First Connection — Connect to your FlexRadio for the first time
• Building from Source — Compile AetherSDR yourself

User Guide

• Panadapter Controls — FFT spectrum, waterfall, zoom, pan, display settings
• VFO Widget — Frequency display, sub-menus, slice management
• RX Controls — Filters, DSP, AGC, squelch, RIT/XIT
• TX Controls — Power, profiles, ATU, MOX, TUNE
• Multi-Slice Operation — Working with multiple VFOs
• TNF (Tracking Notch Filters) — Creating and managing notch filters
• Profile Management — Global, TX, and Mic profiles
• XVTR (Transverters) — Transverter setup and operation

CW & Digital Modes

• CWX Panel — Keyboard-to-CW keying panel (CW/CWL modes)
• CW Decoder — Real-time Morse decode with confidence coloring
• DVK Panel — Digital Voice Keyer: 12-slot recording/playback for contesting (voice modes)
• RTTY Operation — Mark/Space lines, shift settings, external software setup
• RADE Digital Voice — FreeDV AI-based digital voice codec
• DAX Virtual Audio — Virtual audio devices for digital mode apps (WSJT-X, VARA, fldigi)
• WSJT-X Integration — FT8/FT4 with rigctld CAT control and DAX audio
• CAT Control — Hamlib rigctld TCP and virtual serial ports

Spotting

• SpotHub — Unified spot manager (DX Cluster, RBN, WSJT-X, POTA, FreeDV)

External Control

• FlexControl Tuning Knob — USB tuning knob with acceleration and configurable buttons
• MIDI Controller Mapping — Map any MIDI controller to 50+ radio parameters with Learn mode
• MQTT Station Automation — Subscribe/publish to control rotators, antenna switches, and Node-RED flows
• USB Cable Management — Configure CAT, BCD, Bit, and Passthrough cables on the radio's USB ports

Remote Operation

• SmartLink Setup — Operate your radio over the internet
• Manual Connection — Connect across routed networks without SmartLink
• Low Bandwidth Connections — Reduce traffic for VPN, LTE, and metered links

Radio Configuration

• Radio Setup — All settings tabs
• Firmware Update — Update radio firmware from Linux
• Audio Settings — Line out, headphone, PC audio devices

Advanced

• DSP Noise Mitigation — Complete guide to all noise reduction features
• Multi-Flex — Operating alongside SmartSDR or Maestro
• NR2 Noise Reduction — Client-side spectral noise reduction
• Troubleshooting — Common issues and solutions

Contributing

• Contributing Guide — How to contribute code and features
• AI-Assisted Development — Using Claude AI to contribute