Radio Setup dialog

This page describes every control in the Radio Setup dialog (Settings > Radio Setup...). The dialog has a tab strip along the top; each section below covers one tab.

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Radio tab

Displays radio identification, license information, and firmware update controls.

Indicators

Indicator	Behavior
Radio SN	Chassis serial number (read-only).
Model	Radio model (read-only).
HW Version	Hardware version string (read-only).
Region	Regulatory region; default USA (read-only).
FlexControl	Detected state of FlexControl hardware (read-only).
multiFLEX	multiFLEX enabled state (read-only).
Options	Shows licensed radio options (read-only).
License Info	Displays subscription, expiration, Radio ID, and licensed version from the radio (read-only).

Editable fields

Control	Kind	Behavior
Nickname	Text field	User-friendly radio nickname.
Callsign	Text field	Station callsign.
Station Name	Text field	Identifies this AetherSDR client to other multiFLEX stations. Stored in StationName. Defaults to the OS hostname if left empty. Sent to the radio as client station <name>.

Buttons

Control	Behavior
Remote On	Enables remote wake / remote-on.
Check for Update	Queries for available firmware updates. When an update is found, the status label reads: Update available: vX.Y.Z — Download the SmartSDR installer from flexradio.com, then click 'Select Installer...' to stage it. When firmware is current, the label reads: Firmware is up to date (vX.Y.Z).
Select Installer...	Opens a file picker. Accepts a SmartSDR .msi installer (FlexRadio v4.2+ WiX format), an .exe self-extracting installer (older releases), or a pre-extracted .ssdr firmware file. The firmware stager auto-detects the format from the first 8 bytes (OLE/MSI magic vs. PE/COFF MZ header) and extracts the .ssdr payload without external tools. Previously labelled Browse .ssdr... (changed in v0.9.3).
Upload Firmware	Starts the firmware upload. A progress bar and status label track progress. Enabled only after a valid file has been staged by Select Installer....

Staging a firmware update (v0.9.3 and later)

1. Click Check for Update.
2. If an update is available, download the SmartSDR installer from flexradio.com.
3. Click Select Installer... and select the downloaded .msi, .exe, or .ssdr file.
4. The status label shows Preparing firmware from \<filename>... while the stager extracts the payload.
5. When staging completes the status label confirms readiness and Upload Firmware becomes active.
6. Click Upload Firmware to transfer the firmware to the radio.

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Network tab

Displays network addresses and lets you adjust network settings.

Indicators

Indicator	Behavior
IP Address / Mask / MAC Address	Read-only network addresses reported by the radio.

Controls

Control	Kind	Default	Behavior
Enforce Private IP Connections:	Toggle button	—	Rejects non-RFC1918 peers.
Network MTU:	Spinbox	1450	Sets maximum outgoing VITA-49 UDP packet size in bytes. Range: 576–9000 bytes. Stored in NetworkMtu.
DHCP / Static	Toggle button	—	Switches between DHCP and Static IP modes.
IP Address: / Mask: / Gateway:	Text fields	—	Static IP configuration fields.
Apply	Push button	—	Pushes the network configuration to the radio.

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GPS tab

Displays GPS presence and live position data when a GPS receiver is attached to the radio.

Indicator	Behavior
Live GPS data	Shows latitude, longitude, altitude, time, and satellite count. Updated in real time.

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TX tab

Controls TX timings, interlocks, power limits, tune mode, and slice-follow behavior.

Control	Kind	Default	Behavior
Timings (in ms)	Spinbox	—	TX hang and delay timings in milliseconds.
Interlocks - TX REQ: RCA / Accessory	Toggle button	—	Enables the RCA and accessory interlock inputs.
Max Power:	Spinbox	—	Radio-level TX power cap (0–100%).
Tune Mode:	Combo box	—	Selects how the Tune button behaves.
Show TX in Waterfall:	Toggle button	—	Draws the TX signal in the waterfall display.
TX Follows Active Slice	Push button	False	TX follows the active slice. Mutually exclusive with Active Slice Follows TX. Disabled automatically during Split operation. Stored in TxFollowsActiveSlice.
Active Slice Follows TX	Push button	False	Switches the active slice when TX moves externally (e.g. WSJT-X or CAT). Mutually exclusive with TX Follows Active Slice. Stored in ActiveFollowsTxSlice.
TX Band Settings	Push button	—	Opens the dedicated per-band power and tune dialog.

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Phone/CW tab

Configures the microphone, CW keyer, and RTTY defaults.

Iambic keyer

1. Click Settings > Radio Setup....
2. Click the Phone/CW tab.
3. Confirm Iambic: reads Enabled. If it reads Disabled, click it once to enable the keyer.
4. Click A or B to select Curtis iambic mode.

Control	Kind	Default	Behavior
Enable/Disable the Level Meter During Receive	Toggle button	—	Shows the mic level meter during RX.
Iambic:	Toggle button	—	Enables or disables the iambic keyer on the radio.
Iambic Mode: A / B	Push button (mutually exclusive pair)	A	Selects Curtis iambic mode A or B for both the radio hardware keyer and the local software keyer. Mode A = Curtis A; Mode B = Curtis B. Added in v0.9.1.
Swap:	Toggle button	—	Swaps dit and dah.
Sideband:	Combo box	—	Selects CW pitch sideband (LSB or USB).
CWX:	Toggle button	—	Enables CWX macro keying.
Decode:	Toggle button	True	Enables the CW decode overlay on the panadapter. Stored in CwDecodeOverlay.
RTTY Mark Default:	Spinbox	—	Default RTTY mark frequency.

Mode A vs. Mode B: Mode A (Curtis A) releases the last element when both paddles are released mid-squeeze. Mode B (Curtis B) completes the last element before stopping. The local software keyer mirrors whichever mode you select, providing sub-5 ms sidetone response independent of network latency.

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RX tab

Provides GPSDO frequency offset calibration and 10 MHz reference source selection.

In v0.9.2.1, the calibration controls became available regardless of whether a GPSDO is installed. The status label at the top of the group reads:

• GPSDO installed. Manual frequency offset calibration available. (green) — GPSDO present.
• Manual frequency offset calibration available. (amber) — no GPSDO.

Using frequency calibration

1. Click Settings > Radio Setup....
2. Click the RX tab.
3. Enter a known-accurate reference frequency in Cal Frequency (MHz):.
4. Click Start.
5. The button label changes to Busy and becomes disabled while calibration runs.
6. The status label reports progress (Starting… and subsequent states).
7. AetherSDR resets the frequency error to 0 ppb (radio set freq_error_ppb=0) before starting the sweep.
8. When calibration completes, the button re-enables and the status label updates with the result.
9. If Cal Frequency (MHz): is empty when you click Start, the status label shows Enter cal frequency and calibration does not begin.

Calibration controls

Control	Kind	Default	Behavior
Cal Frequency (MHz):	Spinbox	—	Frequency used for calibration. Must not be empty before clicking Start.
Start	Push button	—	Resets frequency error to 0 ppb, then starts the calibration sweep. Disabled and labelled Busy during an active calibration.
Freq Offset (ppb):	Spinbox	—	Manual frequency offset in parts per billion. Applied directly without running a sweep.
10 MHz Reference Source:	Combo box	Auto	Selects the oscillator reference source. The combo is populated dynamically based on installed hardware and the current oscillator state: Auto, TCXO, GPSDO, and External 10 MHz appear only when the corresponding hardware is detected or was previously selected. When Auto is active, the status label shows the resolved source (for example, Auto -> GPSDO). If the selected source differs from the active state, both are shown (for example, GPSDO -> TCXO). Lock status (Locked / Unlocked) is appended and updates live; if External 10 MHz is selected but no external signal is detected, (not detected) is appended.

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Audio tab

Configures radio audio outputs, PC audio devices, recording, and the NVIDIA BNR container.

Control	Kind	Default	Behavior
Line Out:	Slider	—	Line-out gain.
Mute (Line Out)	Push button	—	Mutes line-out.
Headphone:	Slider	—	Headphone gain.
Mute (Headphone)	Push button	—	Mutes headphone output.
Front Speaker: / Mute	Push button	—	Mutes the front speaker (model-specific).
Audio Compression (SmartLink): Auto / Uncompressed / Opus	Push button	Auto	Selects the audio codec for SmartLink/LAN connections. Stored in AudioCompression.
Prevent system sleep while connected	Checkbox	False	Keeps the OS awake while the radio is connected to prevent audio/TCP/UDP stream drops during idle. Stored in InhibitSleepWhileConnected.
PC Audio Devices: Input: / Output:	Combo box	—	Picks the host audio input and output devices.
Audio Boost:	Toggle button	—	Enables extra gain on the client audio path. Stored in AudioBoost.
Audio Buffer:	Text field	200	Audio buffer size in milliseconds for VPN/SmartLink jitter compensation. Range: 50–1000 ms. Stored in AudioBufferMs.
Recording: Radio Side / Client Side	Push button	Radio Side	Selects radio-side or client-side recording. Stored in RecordingMode.
Save to:	Text field	—	Folder for saved recordings (client-side only). Defaults to Documents/AetherSDR/Recordings. Stored in QsoRecordingDir.
...	Push button	—