Radio Setup Dialog

The Radio Setup dialog is the master per-radio configuration window. It contains tabs for radio information, network, GPS, TX, phone/CW, RX, antennas, filters, XVTR, USB cables, peripherals, serial/FlexControl, themes, and SmartLink certificate management. Many read-only values include a clipboard copy button next to the label for easy sharing with support.

Opening the dialog

1. Click Settings > Radio Setup....
2. The dialog opens with the Radio tab selected.

General dialog behavior

• The dialog geometry is persisted across sessions using PersistentDialog.
• Changes made on some tabs are applied immediately; others require clicking an Apply or Connect button.
• If you clear an IP field on the Peripherals tab and close the dialog without clicking Connect/Disconnect, the saved manual IP and port are automatically removed and the device disconnects.
• Tabs whose content may exceed the dialog's visible height (Themes, Audio, Filters, Peripherals on small or high-DPI displays) are wrapped in a vertical scroll area so the dialog does not overflow the screen edge.

Radio (tab)

The Radio tab displays radio information, identification, license info, firmware update controls, and a reboot button.

Control	Description	Notes
Radio SN	Chassis serial number (read-only).	Click the copy button to copy the serial number to clipboard.
Region	Radio regulatory region (read-only).
HW Version	Hardware version string (read-only).	Click the copy button to copy the version string to clipboard.
Remote On	Enables remote wake / remote-on.
Options	Shows licensed radio options (read-only).	Click the copy button to copy the options string to clipboard.
FlexControl	Detected state of FlexControl hardware (read-only).
multiFLEX	multiFLEX enabled state (read-only).
Model	Radio model (read-only).	Click the copy button to copy the model string to clipboard.
Nickname	User-friendly radio nickname.
Callsign	Station callsign.
Station Name	Identifies this AetherSDR client to other multiFLEX stations. Defaults to the OS hostname if empty.	Stored in AppSettings as StationName. Sent to radio as "client station \<name>".
License Info	Displays license details from the radio: subscription, expiration, radio ID, and licensed version.	Each field includes a clipboard copy button next to the value.
Check for Update	Queries for firmware updates.
Select Installer...	Opens a file dialog for a SmartSDR installer (.msi, .exe) or pre-extracted .ssdr firmware file. Passes the selected path to FirmwareStager which extracts .ssdr payload and emits progress.	Label changed from 'Browse .ssdr...' to 'Select Installer...' in v26.5.3.
Upload Firmware	Starts firmware upload with progress bar and status.
Reboot Radio	Sends a reboot command to the connected radio. Disabled when radio is disconnected. Shows a confirmation dialog before rebooting. On LAN, AetherSDR automatically reconnects after the radio boots. On SmartLink/WAN, you must reconnect manually.	New in v26.6.3. The dialog closes after reboot starts.

Copyable values (Radio tab)

The Radio SN, HW Version, Options, Model, and each License Info field display a small copy button when hovered or focused. Clicking the button copies the displayed value to the system clipboard and shows a brief "Copied!" popup near the button.

Rebooting the radio

1. Open Settings > Radio Setup....
2. Click the Radio tab.
3. Locate Reboot Radio button.
4. Click Reboot Radio.
5. A confirmation dialog appears with different text depending on connection type:
   • WAN/SmartLink: "AetherSDR will disconnect. SmartLink/WAN sessions do not auto-reconnect today — you will need to reconnect manually once the radio finishes booting."
   • LAN: "AetherSDR will disconnect and automatically reconnect once the radio finishes booting."
6. Click OK to confirm.
7. The dialog closes automatically.
8. The radio reboots and AetherSDR disconnects.

Firmware update (Radio tab)

AetherSDR does not download firmware automatically when an update is detected. Download the SmartSDR installer from flexradio.com yourself, then stage it manually.

Staging a firmware update

1. Open Settings > Radio Setup....
2. Click the Radio tab.
3. Click Check for Update.
4. If an update is available, a status message tells you the available version and directs you to download the installer from flexradio.com.
5. If firmware is current, a green status message confirms the installed version.
6. Download the SmartSDR installer from flexradio.com. Accepted formats:
7. .msi — WiX installer (FlexRadio SmartSDR v4.2 and later)
8. .exe — older self-extracting installer
9. .ssdr — pre-extracted firmware file
10. Click Select Installer....
11. A file picker opens filtered to *.msi, *.exe, and *.ssdr.
12. Select the file you downloaded.
13. When the upload button becomes active, click Upload Firmware.
14. A progress bar tracks the upload.
15. Do not close the dialog or disconnect from the radio while the upload is in progress.

Firmware status messages

Message	Meaning
Update available: vx.y.z	A newer firmware version exists. Download the installer from flexradio.com, then click Select Installer....
Firmware is up to date (vx.y.z)	No action needed.
(error text in red)	Upload failed. Check the file is a valid SmartSDR firmware file and try again.

Network (tab)

The Network tab displays radio network information and lets you configure advanced network options.

Control	Description	Default
IP Address / Mask / MAC Address	Read-only network addresses. Each includes a clipboard copy button.	—
Enforce Private IP Connections:	Rejects non-RFC1918 peers. Toggle button shows "Enabled".	—
Network MTU:	Sets maximum outgoing VITA-49 UDP packet size in bytes. Range 576–9000 bytes. Default 1450 is safe for most VPN/SD-WAN tunnels. Stored in AppSettings as NetworkMtu.	1450
DHCP / Static	Switches between DHCP and Static IP modes.	—
IP Address: / Mask: / Gateway:	Static IP configuration fields.	—
Apply	Pushes the network configuration to the radio.	—

Changing the Network MTU

The Network MTU setting controls the maximum packet size the radio sends over the network. Lowering it prevents fragmentation when you connect through a VPN or other tunnel that reduces the available path MTU.

1. Open Settings > Radio Setup....
2. Click the Network tab.
3. Locate the Network MTU: spinbox.
4. Set the value to match your network path MTU.
5. Click Apply to push the new MTU to the radio.

GPS (tab)

The GPS tab displays GPS presence and live latitude, longitude, altitude, time, and satellite information.

Control	Description
GPS status	Shows GPS presence and live position data.

TX (tab)

The TX tab controls TX timings, interlocks, max power, tune mode, waterfall display, slice/TX follow, and TX Band Settings.

Control	Description	Default
TX Band Settings	Opens the dedicated per-band power/tune dialog.	—
Timings (in ms)	TX hang / delay timings.	—
ACC TX:	ACC TX delay in milliseconds.	—
TX Delay:	TX delay in milliseconds.	—
RCA TX1:	RCA TX1 delay in milliseconds.	—
Timeout (sec):	Interlock timeout in seconds (displayed in seconds, stored on radio in milliseconds).	—
TX2 Delay:	TX2 delay in milliseconds.	—
Interlocks - TX REQ: RCA / Accessory	Enables RCA and accessory interlock inputs.	—
Max Power:	Sets radio-level TX power cap (0–100%).	—
Tune Mode:	Selects how the tune button behaves.	—
Show TX in Waterfall:	Draws TX signal in the waterfall.	—
TX Follows Active Slice	TX follows the active slice. Mutually exclusive with Active Slice Follows TX. Disabled automatically during Split operation.	False
Active Slice Follows TX	Switches the active slice when TX moves externally (e.g. WSJT-X or CAT). Mutually exclusive with TX Follows Active Slice.	False

TX Timing fields

The TX timing fields control delays and timeouts for transmit operations. Note that the Timeout field displays in seconds for readability, but the radio stores and expects this value in milliseconds internally.

1. Open Settings > Radio Setup....
2. Click the TX tab.
3. Locate the Timings section.
4. Enter the desired value in each field.
5. ACC TX, TX Delay, RCA TX1, and TX2 Delay are in milliseconds.
6. Timeout is in seconds (range 0–3600 seconds).
7. Press Enter or move focus away from the field to apply the change.

Phone/CW (tab)

The Phone/CW tab configures microphone, CW keyer, and RTTY defaults.

Control	Description	Default
Enable/Disable the Level Meter During Receive	Shows mic level meter even in RX.	—
Iambic:	Enables or disables the iambic keyer on the radio. Toggle button shows "Enabled".	Enabled
Iambic Mode: A / B	Selects Curtis iambic mode A or B for both the radio and the local software keyer. Mutually exclusive pair.	A
Swap:	Swaps dit/dah.	—
Sideband:	Selects CW pitch sideband (LSB or USB).	—
CWX:	Enables CWX macro keying.	—
Decode:	Enables the CW decode overlay on the panadapter. Stored in AppSettings as CwDecodeOverlay.	True
RTTY Mark Default:	Default RTTY mark frequency.	—

RX (tab)

The RX tab provides GPSDO frequency offset calibration and 10 MHz reference source selection. All calibration controls are always visible, regardless of whether a GPSDO is installed. A status label at the top of the group indicates whether a GPSDO is present (green text) or not (amber text).

Control	Description
Cal Frequency (MHz):	Frequency used for manual calibration.
Start	Starts the frequency calibration sweep. The button label changes to Busy while the sweep runs.
Freq Offset (ppb):	Manual frequency offset in ppb.
10 MHz Reference Source:	Selects oscillator reference source. Options depend on hardware installed. See table below.

10 MHz Reference Source

The 10 MHz Reference Source: combo box is populated dynamically. Only sources supported by the connected hardware appear. A label beside the combo shows the resolved source and lock state.

Combo options

Option	When shown
Auto	Always.
TCXO	When oscillator status has been received, or when the radio reports tcxoPresent, or when the current or active setting is tcxo.
GPSDO	When the radio reports gpsdoPresent, or when the current or active setting is gpsdo.
External 10 MHz	When oscillator status has been received, or when the radio reports extPresent, or when the current or active setting is external.

Status label behavior

• When Auto is selected and the radio has chosen a specific source, the label reads Auto -> <source>.
• When a specific source is selected and the radio is using a different one, the label reads <selected> -> <active>.
• When the setting and state agree, only the active source is shown.
• Lock state is appended: Locked (green) or Unlocked (red).
• If External 10 MHz is selected or active but no external reference is detected, the label appends (not detected).
• While the radio has not yet reported oscillator status, the label reads Waiting for oscillator status in grey.

Calibration procedure

1. Open Settings > Radio Setup....
2. Click the RX tab.
3. Enter a known-accurate reference frequency in the Cal Frequency (MHz): field.
4. Click Start.
5. The button label changes to Busy and is disabled while the calibration sweep runs.
6. A status label beside the button updates as the sweep progresses.
7. The radio first resets the frequency error to 0 ppb, then begins the PLL calibration sequence.
8. When calibration completes the button re-enables and the status label shows the result.
9. If you