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AetherSDR User Manual
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LU5DX/AetherSDRDocsEnglish
AetherSDR User Manual
About this Documentation
Changelog
Features
Getting started
Operating
Reference
Troubleshooting
AetherSDR User Manual
LU5DX/AetherSDRDocsEnglish
AetherSDR User Manual
About this Documentation
Changelog
Changelog
v0.9.7
v0.9.5.1
v0.9.4
v0.9.3
v0.9.2.1
v0.9.1
v0.9.0
Features
Features
Aether dsp
Aether dsp
AetherDSP Settings
Change NR2 noise power estimator (OSMS/MMSE/NSTAT)
Configure DFNR post-filter beta for extra suppression
AetherDSP Settings
Enable or disable NR4 adaptive noise estimation
AetherDSP Settings overview
Reset NR2 or NR4 parameters to defaults
Set DeepFilterNet3 Attenuation Limit for Strong or Weak Signals
Switch NR2 gain method between Linear, Log, Gamma and Trained
Tune NR2 Reduction Depth and Voice Threshold
Tune NR4 masking depth and suppression strength
Amp
Amp
Monitor Forward Power and SWR at the Amplifier Output
Amplifier overview
Put the PGXL amplifier in OPERATE
Put the PGXL amplifier in STANDBY
Watch PGXL temperature, drain current, and mains voltage
Antenna genius
Antenna genius
Auto-discover an Antenna Genius on the LAN
Enable AUTO mode so the AG follows radio band changes
Antenna Genius Overview
Select an antenna for Port A or Port B
Spot which antennas cannot TX on the current band (amber or dim)
Swap Radios That Share the AG (Antennas in Use by the Other Port Are Locked Out)
Band stack
Band stack
Bookmark the current frequency
Delete a bookmark you no longer need
Band Stack overview
Recall a stored bookmark with one click
Visually scan the stored frequencies for the active band
Cat control
Cat control
Autostart CAT servers with AetherSDR
Change the base TCP port
Enable CAT PTY so Linux/macOS apps can open a serial-style CAT port
Enable CAT TCP so N1MM, Log4OM, WSJT-X can control the radio
CAT Control overview
Client chain
Client chain
Bypass every RX stage at once
Bypass every TX stage at once
Open a Stage's Floating Editor from the Chain
Open a Stage's Frameless Floating Editor from the Chain
Aetherial Audio Chain overview
Play back the captured PUDU audio
Re-enable a specific stage after a global bypass
Record up to 30 seconds of post-PUDU TX audio
Reorder the RX DSP chain (independent of TX order)
Reorder the TX DSP chain
See at a glance whether PC Audio, the noise reducer, and audio output are live (RX status tiles)
Switch between editing the TX and RX chains
Switch between TX chain view and RX placeholder
Visually confirm when TX (MOX) is live
Client comp
Client comp
Adjust Compressor Threshold (TX or RX Side)
Adjust Compressor Threshold
Apply make-up gain after compression
Bypass the Compressor from the Chain
Open the Full Compressor Editor for Knee and Limiter Controls
Aetherial Compressor (TX) / Aetherial AGC-C (RX) Overview
Set Compression Ratio for Voice (TX) or Received Audio (RX AGC-C)
Set compression ratio for voice
Tune Attack / Release for a Natural-Sounding Squeeze
Watch live gain reduction while speaking or listening
Watch live gain reduction while speaking
Client de ess
Client de ess
Bypass the de-esser from the chain
Dial Amount for the most transparent de-essing
Narrow or widen the sidechain band with Q
Aetherial De-Esser overview
Set threshold just below the loudest 'S' peaks
Sweep Freq to locate peak sibilance
Watch live GR while reading a sibilant phrase
Client eq
Client eq
Adjust post-EQ output gain with the Output Fader
Bypass the EQ stage from the chain
Change a band's filter type by clicking its icon in the icon row
Change the HP/LP filter family (Butterworth, Chebyshev, Bessel, Elliptic)
Drag the TX or RX filter cutoff guide line to move the radio passband
Freeze the analyzer peak hold trace to spot resonances while tuning
Inspect the RX EQ curve and live spectrum
Inspect the TX EQ curve and live spectrum
Monitor post-EQ peak level on the Output Fader meter
Open the floating editor to add / remove / tune bands
Open the Frameless Editor to Add / Remove / Tune Bands on Either Side
Aetherial Parametric EQ (TX / RX) overview
Read exact freq / gain / Q values in the parameter text row
Reset all EQ bands to the default 10-band template
See the live spectrum of the selected path
Smooth the analyzer display for easier reading with the Smoothing combo
Switch between viewing RX and TX EQ
Verify the summed curve matches your mental target
Client gate
Client gate
Bypass the Gate from the Chain
Choose gate vs soft-expander behaviour via ratio
Aetherial TX Gate / Aetherial AGC-T (RX) Overview
Set Floor to avoid unnatural silence between words
Set Return to prevent gate chatter near threshold
Set Threshold Just Above Room Noise Floor
Set TX threshold just above room noise floor
Tune Return / Release for Natural Open/Close
Tune Release for Natural Gate Close
Use AGC-T on RX to Suppress Band Noise Below a Chosen Floor
Watch live GR while not speaking
Client level meter
Client level meter
Output Level Meter overview
Read the output level meter on the Tube applet
Client pudu
Client pudu
Add air with Doo Harmonics
Blend the Doo excitement with Mix
Blend the Body enhancement with Mix
Bypass PUDU from Either Chain
Bypass PUDU from the chain
Centre Clarity on the presence band for your mic (TX) or for RX intelligibility
Centre Doo on the presence band for your mic
Dial Body Drive for LF thickness
Aetherial TX Poodoo / Aetherial RX Poodoo overview
Pick Aphex (Even) vs Behringer (Odd) character
Tune Body to the fundamental of your voice (TX) or to bring out RX program lows
Tune Poo to the fundamental of your voice
Client reverb
Client reverb
Bypass reverb from the chain
Dial in a subtle Mix — 10-15 % is typical for voice
Offset reflections from the dry signal with Pre
Aetherial FreeVerb Overview
Reduce the high-end sparkle of the tail with Damp
Set room size for a small or large-hall feel
Tune decay to taste without muddying speech
Client tube
Client tube
Brighten or darken the saturated signal with Tone
Bypass the tube from either chain
Bypass the tube from the chain
Compensate level changes with Output
Dial Drive until the curve starts to bend (TX warmth or RX tone shaping)
Dial Drive until the curve starts to bend
Monitor output clipping with the level meter in the editor
Aetherial Mic-PreAmp (TX) / Aetherial Dynamic Tube (RX) overview
Parallel-blend saturation with Dry/Wet
Parallel-blend saturation with Mix
Read the output level meter on the Tube applet
Select a tube character (Model A, B, or C) to change harmonic flavour
Shift Bias to tweak the even / odd harmonic balance
Shift Bias to tweak the harmonic balance
Tune Attack and Release for natural-sounding envelope following
Use Envelope to add dynamic drive on transients
Connection
Connection
Enable low-bandwidth mode for slow links
Log in to SmartLink to see remote radios
Connect to a Radio overview
Retry Discovery When No Radios Appear
Cwx
Cwx
Change CW Send Speed in WPM
Edit a CW macro string
Enable QSK Full Break-in
Look up the prosign character shortcuts
CWX overview
Send a typed CW buffer live
Trigger a CW macro with F1–F12
Dax
Dax
Autostart DAX on Launch
Enable DAX to route slice audio to WSJT-X / FLDigi / other digital software
Identify which slice is the TX slice
DAX Audio overview
Reduce DAX RX Latency on Linux (Native PipeWire Path, ~200 ms)
See which slice is currently using each DAX channel
Set DAX RX gain per channel
Set DAX TX gain
Dax iq
Dax iq
Disable an IQ stream to free bandwidth
Enable an IQ stream for external SDR software
Monitor the RMS level of each IQ stream
DAX IQ Overview
Pick the IQ sample rate (24k/48k/96k/192k)
Dvk
Dvk
Digital Voice Keyer overview
Play a stored voice-keyer slot
Preview a slot without transmitting
Record a new DVK slot
Rename a slot
Stop a Playback in Progress
Upload a WAV file into a slot
Dx cluster
Dx cluster
Auto-reload ADIF log when updated by a logger
Clear all spots from the panadapter
Enable DXCC Coloring from an ADIF Log
Enable FreeDV QSO Reporter WebSocket
Enable SpotCollector UDP feed
SpotHub overview
Pick colors for each spot source
Poll POTA activations
Start WSJT-X UDP Listener and Filter for CQ, POTA or Calls to Me
Toggle vertical spot lines for contest or casual operating
Tune spot density, position, font size and lifetime
Tune to a Spot by Double-Clicking the Spot List
Eq
Eq
Boost or cut specific octave bands (63 Hz to 8 kHz)
Compare EQ on vs EQ off quickly with the ON button
Enable radio-side graphic EQ for RX
Enable radio-side graphic EQ for TX
Equalizer (Graphic) overview
Reset all bands to flat with one click
Switch between shaping RX audio and TX audio
Help
Help
Configure digital modes step-by-step
Learn the differences between NR2, NR4, DFNR and MNR
Open bundled getting-started guide
AetherSDR Offline Help Overview
Read the full AetherSDR help document
Understand How to Contribute Bug Reports and PRs
Memory
Memory
Add a memory at current frequency
Delete one or more memories
Edit a memory's name, mode or offset inline
Export memories for backup or sharing
Filter memories by profile
Import memories from a CSV/JSON file
Memory Channels overview
Recall an FM Repeater Memory and Restore Offset and CTCSS Tone
Search memories by name
Sort Memory Table by Column Header
Tune the Radio to a Stored Memory
Memory browse
Memory browse
Activate a memory with a single double-click
Browse the Radio's Stored Memories
Jump to the memory closest to the current frequency
Memory Browser overview
Meter
Meter
Check the Radio's DC Supply Voltage
Check the Radio's Live DC Supply Voltage
Monitor the Main Cooling Fan Speed
Meters overview
Watch PA temperature during long overs
Midi mapping
Midi mapping
Bind a MIDI Button to Straight Key, Left Paddle, or Right Paddle CW
Delete a binding
Invert a knob or treat it as an endless encoder
Load a previously saved MIDI profile
MIDI Controller Mapping Overview
Record a new binding with Learn mode
Save the Current Mapping as a Named Profile
Mqtt
Mqtt
Add or remove custom publish buttons
Enable TLS with a custom CA certificate
Overlay an MQTT value on the panadapter (prefix topic with *)
MQTT overview
Publish a canned message with a button (e.g. rotator preset)
Subscribe to rotator / antenna switch topics
Multi flex
Multi flex
Check which antenna and frequency each TX station is using
Enable multiFLEX on the radio
Grant or revoke local PTT
multiFLEX Dashboard overview
Network diagnostics
Network diagnostics
Change the Timeframe of the History Graphs (1 Min to 1 Week)
Check per-category data rates (audio, FFT, waterfall, meters, DAX)
Measure RTT and packet drops during audio problems
Network Diagnostics overview
Pause log scrolling to inspect an older entry
Network Diagnostics Dialog
View live log output filtered by diagnostic category
Pan layout
Pan layout
Arrange a 2x2 grid of panadapters
Panadapter Layout Overview
Preview and pick among the 10 layout variants
Split panadapter area side-by-side
Switch to a single full-width panadapter
Understand the slice capacity warning when adding panadapters
Panadapter
Panadapter
Click the spectrum to activate a panadapter multi slice mode
Close an extra panadapter
Copy decoded CW text to the clipboard
Fix a static/stale spectrum in a popped-out panadapter on macOS
Fix TX trail remaining visible on the waterfall after unkeying
Lock CW decoder pitch or speed once tracking is good
Maximize one panadapter to fill the main area
Panadapter overview
Pop a panadapter out into its own window
Tune CW decoder sensitivity to reject noise
Turn on the CW decoder to read Morse off-air
Phone
Phone
Adjust AM carrier power for AM transmit
Phone Applet
Phone overview
Set the TX audio high-cut frequency
Set the TX audio low-cut frequency
Tune VOX hang time
Phone cw
Phone cw
Adjust mic gain and enable the accessory mix
Change CW pitch / sidetone frequency
Configure break-in OFF so CW keys queue and PTT is manual
Enable iambic paddle keying
Enable speech processor at NOR, DX, or DX+ level
Enable the low-latency CW sidetone (Sidetone button drives both radio and local path)
Enable the low-latency CW sidetone for fast paddle / straight-key / CWX work
Listen to a TX sidetone monitor
CW sidetone pitch, volume, and enable in v0.9.2.1
Phone/CW overview
Pan the CW sidetone left or right
Pick a mic source (MIC, BAL, LINE, ACC, PC)
Select a mic profile for a specific microphone
Set CW break-in delay
Set CW keying speed in WPM
Set the CW sidetone volume
Use keyboard or MIDI to trigger straight key or iambic paddles
Profile manager
Profile manager
Create a separate mic profile per microphone
Profile Manager overview
Rename or delete a microphone profile
Review the list of active global profiles
Save the current radio state as a new global profile
Switch to a saved transmit profile
Turn on auto-save so TX tweaks always persist
Prop dashboard
Prop dashboard
Check current solar flux, sunspot number and K-index
Cycle solar imagery wavelengths to build intuition
Decide Which HF Band Is Open for Day or Night Work
HF Propagation Dashboard overview
Read rotating learning notes about solar conditions
See the 3-day Kp forecast and blackout risk
Watch for VHF sporadic-E or auroral openings
Radio setup
Radio setup
Assign a USB cable as CAT, BCD, bit or PTT
Calibrate the GPSDO frequency offset
Change Network MTU for VPN/Remote Setups
Check Radio Serial, Hardware Version, Region and Options
Choose PC input/output audio devices
Configure FlexControl Serial Port Pin Functions
Create a new transverter entry
Enable auto-record on TX and pick a save folder
Radio Setup Overview
Pick Opus vs Uncompressed Audio for SmartLink
Radio Setup dialog
Set per-band TX max power and tune mode
Set the radio nickname, callsign and station name
Start/stop the NVIDIA BNR Container
Switch the Radio Between DHCP and Static IP
Switch to an External 10 MHz Reference
Toggle low-latency vs sharp filters per bandwidth
Turn on audio boost or enlarge the audio buffer for remote operation
Upload a New Firmware File to the Radio
Rx
Rx
Change mode (USB, LSB, CW, AM, FM, etc.)
Fix stale slice tabs after switching to a radio with fewer slices
Lock the slice to prevent accidental retuning
RX Controls overview
Pick a filter width preset for the current mode
Select the RX or TX antenna for this slice
Switch between multiple slices using the A..H tab row
Tune the radio to a frequency (type MHz in the readout)
Turn on the squelch and set its threshold
Use RIT to offset the receive frequency for a drifting station
Use XIT to offset the transmit frequency without changing RX
Work an FM repeater with CTCSS tone and ± offset
Shack switch
Shack switch
Configure a dummy load antenna to protect the transmit path
Open the ShackSwitch web configuration interface
ShackSwitch overview
Resolve an Input A and Input B antenna conflict
Select an antenna for ShackSwitch Input A
Select an antenna for ShackSwitch Input B
Shortcut
Shortcut
Find all actions in a category
Keyboard Shortcuts Overview
Rebind a keyboard shortcut
Reset every shortcut back to defaults
Reset one shortcut to its default key
See the default key for any action
Slice troubleshooting
Slice troubleshooting
Capture a slice snapshot for support
Copy the full JSON snapshot to the clipboard
Export the snapshot to a file to attach to a bug report
Inspect each transverter's RF/IF, offset and validity flags for XVTR diagnosis
Slice Troubleshooting
Read a plain-language list of suspected slice problems
Refresh the snapshot after changing slice state
Spot settings
Spot settings
Adjust spot background opacity
Change spot density and vertical position
Clear every spot from the panadapter
Enlarge or shrink the spot font
Force a single spot text color
Overlay memory channels on the panadapter
Spot Settings overview
Pick a custom background color for spots
Shorten or lengthen spot lifetime
Turn spots on or off
Support
Support
Clear the Log Before Reproducing a Bug
Enable verbose logging for a specific subsystem
File an AI-assisted bug report
Open the log folder to grab multiple files
Support & Diagnostics overview
Reset AetherSDR Settings to Factory Defaults
View the Live Log Without Leaving the App
Tci
Tci
Adjust TCI RX gain per channel
Adjust TCI TX gain
Autostart TCI on launch
Change the TCI port
Enable the TCI server for Log4OM / SunSDR clients
Fix TCI TX Silent on Windows or Linux without PipeWire
TCI Server Overview
Tuner
Tuner
Fine-tune the C1/L/C2 relays with the mousewheel
Tuner overview
Put the tuner in OPERATE, BYPASS, or STANDBY
Read SWR Immediately After a Tune
Run an Autotune on the External TGXL
Switch between three antennas on a TGXL 3x1
Tx
Tx
Cancel an active or stuck transmission with the status bar TX badge
Enable APD to Linearise the Transmitter
TX Controls overview
Recall an ATU Memory
Run a Two-Tone Tune
Run the internal ATU
Set RF output power
Set tune-carrier power
Start a tune carrier to check SWR
Switch TX Profiles (e.g. SSB, Digital)
Toggle MOX to manually key the transmitter
Vfo widget
Vfo widget
Adjust AF gain and pan from the VFO panel
Apply a filter width preset from the VFO panel
Assign a DAX channel from the VFO panel
Change mode from the VFO panel
Change the VFO Marker Line Thickness
Collapse the VFO panel to frequency-only view
Enable noise reduction from the VFO panel
Enable RIT or XIT offset from the VFO panel
Enable squelch from the VFO panel
Hide or show filter edge lines on the spectrum
Mute audio for a slice from the VFO panel
VFO Panel overview
Set a custom filter edge from the VFO panel
Tune the radio by typing a frequency into the VFO panel
Wave
Wave
Adjust waveform amplitude zoom
Monitor TX or RX audio on the waveform display
Waveform applet overview
Pause and clear the waveform display
Pause the waveform to inspect a transient
Set the waveform refresh rate to reduce CPU load
Switch the waveform view mode (Scope, Envelope, History, Bands)
Use the waveform display to monitor TX or RX audio
Whats new
Whats new
Open the Upgrade Flow for a Newer Build
What's New — AetherSDR overview
Re-read Release Notes Later via Help Menu
Read what changed in the new version
Skip the current version's release notes
Getting started
Getting started
Concepts
Concepts
Understanding the AetherSDR Applet Panel
Understanding slices
How tuning works: the five ways to change frequency
Install
Install
Install AetherSDR on Linux
Install AetherSDR on macOS
Install AetherSDR on Windows
Setup
Setup
Auto-connect MIDI controller on startup
Check how many external clients are connected to each channel
Connect a MIDI controller
Connect by IP across a VPN or routed network
Connect TGXL, PGXL, Antenna Genius, or ShackSwitch by IP
Connect to a DX cluster
Connect to a local LAN radio
Connect to a Remote Radio Through SmartLink
Connect to a station MQTT broker
Connect to the Reverse Beacon Network
Disable auto-connect so AetherSDR waits for manual radio selection on startup
Disconnect from the Current Radio
Fix AetherSDR crash on quit when TCI is enabled and a radio is connected
Fix TUNE not working after upgrading to firmware 4.2 (configure direct TGXL connection)
Manually connect to an AG over a remote network
Pick the local network interface used for a manual connection
Recover TGXL TUNE on firmware 4.2 by configuring a direct connection
See all stations connected to this FLEX
See how many TCI clients are connected
Watch the first-UDP-packet timestamp after connect
Tutorials
Tutorials
Make your first QSO with AetherSDR
Operating
Operating
Digital modes
Digital modes
Setting up digital modes (FT8, WSJT-X, fldigi)
Dsp
Dsp
Choosing the right noise reduction: NR2, NR4, DFNR, MNR
Remote
Remote
Operating Remotely over SmartLink
Reference
Reference
Menu actions
Menu actions
AetherSDR Help
Configure Band Plan
Configure UI Scale
Configuring AetherSDR Controls
Configuring Data Modes
Contributing to AetherSDR
Enable Applet Panel
Enable Autostart for CAT with AetherSDR
Enable autostart for DAX with AetherSDR
Enable Autostart for rigctld with AetherSDR
Enable Autostart for TCI with AetherSDR
Enable Blink Status Indicator
Enable Connect to Radio
Enable Frameless Window
Enable Inhibit during TUNE
Enable Keyboard Shortcuts
Enable Minimal Mode
Network Diagnostics
Enable Pan Follows VFO
Enable Pop Out Applet Panel
Enable Propagation Conditions
Enable Single-Click to Tune
FlexControl
Getting Started
Import/Export Profiles
Quit
Reset Applet Order
Submit your idea... 💡
Understanding Noise Cancellation
USB Cables
Settings
Settings
Full AppSettings Key Reference
Troubleshooting
Troubleshooting
Networkdiagnostics
Networkdiagnostics
Diagnose audio underruns and jitter
Reference
¶
Menu actions, keyboard shortcuts, and AppSettings keys — quick lookups for power users.
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