Radio Setup Dialog

The Radio Setup dialog is the master per-radio configuration window. It contains tabs for radio information, network settings, GPS, TX configuration, Phone/CW, RX calibration, audio, antenna names, filters, calibration, transverters, USB cables, peripherals, serial ports, APD, themes, SmartLink pinned certificate management, and KiwiSDR receivers.

Opening the Radio Setup dialog

• Select Settings > Radio Setup... from the main menu.

Radio tab

The Radio tab displays radio identification, licensing information, and firmware update controls.

Radio information (read-only)

Control	Description
Radio SN	Chassis serial number. Click the copy button next to the value to copy the serial number to the clipboard.
Region	Regulatory region (USA by default).
HW Version	Hardware version string.
Options	Licensed radio options.
FlexControl	Detected state of FlexControl hardware.
multiFLEX	multiFLEX enabled state.
Model	Radio model.

Each read-only value field has a copy button. Click the clipboard icon to copy the value to the system clipboard. A brief "Copied" popup confirms the action. Copy buttons are visually dimmed when the value is empty or unavailable.

User-configurable fields

Control	Description	Notes
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 with key StationName. Sent to radio as "client station ".

License information

The License Info section displays subscription status, expiration date, radio ID, and licensed version. Each field includes a clipboard copy button next to the value.

Firmware update

Control	Description
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.
Upload Firmware	Starts firmware upload with progress bar and status.
Firmware status	Empty until a firmware upload begins, then shows progress and result text.

Remote control and reboot

Control	Description	Notes
Remote On	Enables remote wake / remote-on.
Reboot Radio	Reboots the connected radio with a confirmation dialog. AetherSDR disconnects and (on LAN) auto-reconnects once booting finishes.	New in v26.8.4 (#4448). Only enabled when connected and the backend supports a client reboot (e.g. HL2 is RX-only so the button is disabled). On SmartLink/WAN the operator must reconnect manually after the reboot.
Agent Automation (MCP):	Enables the in-app automation bridge so an AI coding assistant (via the MCP server) can introspect and drive the running app. Off by default; the operator opts in.	New in v26.8.4 (#3646). Persisted via AutomationBridgeSettings. The AETHER_AUTOMATION launch environment variable force-enables the bridge regardless of this toggle and disables the control in the UI. Transmit-keying stays blocked unless AETHER_AUTOMATION_ALLOW_TX is set.
Access Token:	Read-only display of the MCP access token; paste it into the assistant's AETHER_MCP_TOKEN environment variable. Stored in the OS secret store.	New in v26.8.4. Auto-mints a 128-bit hex token when the bridge is enabled without one. Placeholder '(loading…)' until the keychain read lands.
Copy (Access Token)	Copies the access token to the clipboard.	New in v26.8.4.
Rotate (Access Token)	Generates a new token and applies it immediately, locking out any client still using the old one.	New in v26.8.4.
Allow TX via MCP: Enable transmit control	Lets an MCP client key the transmitter (MOX/PTT/TUNE/ATU/CWX). Off by default; first enable raises an operator-responsibility confirmation.	New in v26.8.4. Enforced in the bridge; no client can flip it. Overridden by AETHER_AUTOMATION_ALLOW_TX (force on) and AETHER_AUTOMATION_NO_TX (pinned off). A force-unkey watchdog limits bridge-originated TX.
Observe only: Read-only (block all driving)	Makes the bridge observe-only: MCP clients can read state but every mutating verb (set/invoke/connect/tune/capture) is refused.	New in v26.8.4 (#4188). Enforced in the app, so a client cannot bypass it. AETHER_AUTOMATION_READONLY launch variable pins it on for headless/CI runs.
VITA-49 RX buffer:	Snap-to-preset slider setting the kernel receive buffer (SO_RCVBUF) for the VITA-49 stream socket; larger absorbs panadapter/waterfall bursts so packets aren't dropped.	New in v26.8.4 (#3810). Presets 256 KB to 4 MB. The system caps the grant at net.core.rmem_max; a live 'granted: ' label shows what the kernel actually granted.
granted: (VITA-49 RX buffer)	Shows the buffer size the kernel actually granted (vs the requested preset).	New in v26.8.4. Shows '(applies on connect)' when no connection is active.
### SmartLink tab

The SmartLink tab manages pinned SmartLink TLS certificates. Lists each pinned certificate with host, SHA-256 fingerprint, and pinned date. Cert-pin mismatch now hard-pauses the handshake with a modal dialog.

Pinned SmartLink Certificates

Control	Description
Pinned SmartLink Certificates (section)	Section header for the pinned certs table. Lists every host this client has pinned on first connect (trust-on-first-use).
Host / SHA-256 fingerprint / Pinned (table columns)	3-column read-only table: Host (hostname), SHA-256 fingerprint (monospace), Pinned (YYYY-MM-DD or "(pre-phase 2)").
Forget selected	Removes the selected host's pinned cert fingerprint so the next connect re-pins silently.
Forget all	Clears every pinned cert (with confirmation). Next connect to each radio silently re-pins. Shows a confirmation dialog before wiping.

Network tab

The Network tab displays radio network information and provides network configuration options.

Network information (read-only)

Control	Description
IP Address / Mask / MAC Address	Read-only network addresses. Each includes a clipboard copy button.

Network settings

Control	Default	Range	Setting Key	Description
Enforce Private IP Connections:				Rejects non-RFC1918 peers. Toggle button shows "Enabled" when checked.
Network MTU:	1450	576-9000 bytes	NetworkMtu	Sets maximum outgoing VITA-49 UDP packet size in bytes. Default 1450 is safe for most VPN/SD-WAN tunnels.
DHCP / Static				Switches between DHCP and Static IP modes.
IP Address: / Mask: / Gateway:				Static IP configuration fields (visible only in Static mode).
Apply				Pushes the network configuration to the radio.

GPS tab

The GPS tab displays GPS presence and live position data.

Control	Description
GPS status	Shows lat/lon/alt/time/satellites information when a GPS is installed and active.

TX tab

The TX tab controls transmit timings, interlocks, power limits, tuning modes, and slice/TX follow behavior.

TX band settings

Control	Description
TX Band Settings	Opens the dedicated per-band power/tune dialog.

Timings

Control	Description
Timings	TX hang / delay timings.

Field	Description	Notes
ACC TX:	ACC TX delay in milliseconds.	Command: interlock set acc_tx_delay=<ms>
TX Delay:	TX delay in milliseconds.	Command: interlock set tx_delay=<ms>
RCA TX1:	RCA TX1 delay in milliseconds.	Command: interlock set tx1_delay=<ms>
Timeout (sec):	Interlock timeout in seconds. Displayed and entered in whole seconds; the radio stores the value internally in milliseconds.	Command: interlock set timeout=<seconds * 1000>

Interlocks

Control	Description
TX REQ: RCA	Enables RCA interlock input.
TX REQ: Accessory	Enables accessory interlock input.

Power and tuning

Control	Default	Range	Description
Max Power:		0-100%	Sets radio-level TX power cap.
Tune Mode:			Selects how the tune button behaves.

Waterfall display

Control	Description
Show TX in Waterfall:	When enabled, the TX signal is drawn in the waterfall display.

Slice/TX follow behavior

Control	Default	Setting Key	Description
TX Follows Active Slice	False	TxFollowsActiveSlice	TX follows the active slice. Mutually exclusive with Active Slice Follows TX. Disabled automatically during Split operation.
Active Slice Follows TX	False	ActiveFollowsTxSlice	Switches the active slice when TX moves externally (e.g. WSJT-X or CAT). Mutually exclusive with TX Follows Active Slice.

Phone/CW tab

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

Level meter

Control	Description
Enable/Disable the Level Meter During Receive	Shows mic level meter even in RX.

CW keyer

Control	Default	Range	Description
Iambic:		Enabled / Disabled	Enables or disables the iambic keyer on the radio.
Iambic Mode: A / B	A	A / B	Selects Curtis iambic mode A or B for both the radio and the local software keyer. Mutually exclusive pair.
Swap:			Swaps dit/dah.
Sideband:		LSB / USB	Selects CW pitch sideband.
CWX:			Enables CWX macro keying.

Decode

Control	Default	Setting Key	Description
Decode: RX	True	CwDecoder (nested JSON, rx field)	Enables the CW decode overlay on the panadapter for received CW.
Decode: TX	False	CwDecoder (nested JSON, tx field)	Decodes the operator's own CW keying via client-side sidetone, useful as a self-training tool for paddle/bug timing.

RTTY

Control	Description
RTTY Mark Default:	Default RTTY mark frequency.

RX tab

The RX tab provides frequency calibration controls and 10 MHz reference source selection.

Frequency calibration

The calibration controls are visible regardless of whether a GPSDO is installed.

• If a GPSDO is installed, a green status line reads "GPSDO installed. Manual frequency offset calibration available."
• If no GPSDO is installed, a yellow status line reads "Manual frequency offset calibration available."

Calibration procedure

1. Open Settings > Radio Setup... and click the RX tab.
2. Enter a known-accurate reference frequency in Cal Frequency (MHz):.
3. Click Start. The button changes to Busy and is disabled while calibration runs. A status label to the right of the button shows progress text.
4. "Starting…" appears immediately.
5. If you leave the Cal Frequency (MHz): field empty and click Start, the status label shows "Enter cal frequency" in amber and the calibration does not start.
6. Wait for the status label to indicate completion. The Start button re-enables automatically.
7. Confirm or adjust the result using Freq Offset (ppb):.

Control	Description	Notes
Cal Frequency (MHz):	Frequency used for calibration, entered in MHz to six decimal places.	Sent to the radio as radio set cal_freq=<value>.
Start	Begins the calibration sweep. Disabled and labelled Busy while a calibration is in progress.	Resets freq_error_ppb to 0 before starting. Requires a non-empty cal frequency.
**Freq Offset (pp