Radio Setup Dialog

Overview

The Radio Setup dialog is the master per-radio configuration window. It provides access to radio information, network settings, GPS, transmit configuration, phone/CW settings, receive calibration, audio, filters, transverters, USB cables, peripherals, serial ports, SmartLink pinned certificate management, KiwiSDR receiver configuration, and APD settings.

To open the dialog, click Settings > Radio Setup.... The dialog requires an active radio connection.

Radio Tab

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

Information Fields

Control	Kind	Behavior
Radio SN	Indicator	Chassis serial number (read-only). Includes a clipboard copy button next to the value.
Region	Indicator	Radio regulatory region.
HW Version	Indicator	Hardware version string. Includes a clipboard copy button.
Options	Indicator	Shows licensed radio options. Includes a clipboard copy button.
FlexControl	Indicator	Detected state of FlexControl hardware.
multiFLEX	Indicator	multiFLEX enabled state.
Model	Indicator	Radio model. Includes a clipboard copy button.
Nickname	Text field	User-friendly radio nickname.
Callsign	Text field	Station callsign.
Station Name	Text field	Identifies this AetherSDR client to other multiFLEX stations. Defaults to the OS hostname if empty. Stored as StationName in AppSettings. Sent to radio as 'client station '.
License Info (Subscription / Expiration / Radio ID / Licensed version)	Indicator	Displays license details from the radio. Each field includes a clipboard copy button.

Controls

Control	Kind	Behavior
Remote On	Push button	Enables remote wake / remote-on.
Check for Update	Push button	Queries for firmware updates.
Select Installer...	Push button	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	Push button	Starts firmware upload with progress bar and status.
Reboot Radio	Push button	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):	Toggle button	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:	Text field	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)	Push button	Copies the access token to the clipboard. New in v26.8.4.
Rotate (Access Token)	Push button	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	Checkbox	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)	Checkbox	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:	Slider	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)	Indicator	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.

Network Tab

The Network tab displays radio network information and advanced network options.

Information Fields

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

Controls

Control	Kind	Default	Valid Range	Behavior
Enforce Private IP Connections:	Toggle button	Enabled	-	Rejects non-RFC1918 peers.
Network MTU:	Spinbox	1450	576-9000 bytes	Sets maximum outgoing VITA-49 UDP packet size in bytes. Default 1450 is safe for most VPN/SD-WAN tunnels. Stored as NetworkMtu in AppSettings.
DHCP / Static	Toggle button	-	-	Switches between DHCP and Static IP modes.
IP Address: / Mask: / Gateway:	Text field	-	-	Static IP configuration fields.
Apply	Push button	-	-	Pushes the network config to the radio.

GPS Tab

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

TX Tab

The TX tab controls transmit timings, interlocks, maximum power, tune mode, waterfall display, and slice/TX follow behavior.

Controls

Control	Kind	Default	Valid Range	Behavior
TX Band Settings	Push button	-	-	Opens the dedicated per-band power/tune dialog.
Timings (in ms)	Spinbox	-	-	TX hang / delay timings.
Interlocks - TX REQ: RCA / Accessory	Toggle button	-	-	Enables RCA and accessory interlock inputs.
Max Power:	Spinbox	-	0-100 %	Sets radio-level TX power cap.
Tune Mode:	Combo box	-	-	Selects how the tune button behaves.
Show TX in Waterfall:	Toggle button	-	-	Draws TX signal in the waterfall.
TX Follows Active Slice	Push button	False	-	TX follows the active slice. Mutually exclusive with 'Active Slice Follows TX'. Disabled automatically during Split operation.
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'.

Phone/CW Tab

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

Controls

Control	Kind	Default	Valid Range	Behavior
Enable/Disable the Level Meter During Receive	Toggle button	-	-	Shows mic level meter even in RX.
Iambic:	Toggle button	-	Enabled / Disabled	Enables or disables the iambic keyer on the radio.
Iambic Mode: A / B	Push button	A	A / B	Selects Curtis iambic mode A or B for both the radio and the local software keyer. Mutually exclusive pair.
Swap:	Toggle button	-	-	Swaps dit/dah.
Sideband:	Combo box	-	LSB / USB	Selects CW pitch sideband.
CWX:	Toggle button	-	-	Enables CWX macro keying.
Decode: RX	Toggle button	True	-	Enables the CW decode overlay on the panadapter for received CW. Stored as nested JSON under CwDecoder (rx field).
Decode: TX	Toggle button	False	-	Decodes the operator's own CW keying via client-side sidetone, useful as a self-training tool for paddle/bug timing. Stored as nested JSON under CwDecoder (tx field).
RTTY Mark Default:	Spinbox	-	-	Default RTTY mark frequency.

RX Tab

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

Controls

Control	Kind	Default	Valid Range	Behavior
Cal Frequency (MHz):	Spinbox	-	-	Frequency used for manual calibration.
Start	Push button	-	-	Starts the frequency calibration sweep.
Freq Offset (ppb):	Spinbox	-	-	Manual frequency offset in ppb.
10 MHz Reference Source:	Combo box	Auto	Auto / TCXO / GPSDO / External	Selects oscillator reference source. Options shown depend on hardware installed. Lock status (Locked / Unlocked) is shown alongside the combo and updates live.

Calibration Tab

The Calibration tab provides manual frequency calibration for radios that cannot calibrate their own oscillator (e.g. HL2). This tab is hidden unless the connected radio's backend supports host frequency calibration; it is capability-gated, not family-gated, so it never appears on a Flex where the RX tab's hardware calibration handles the task.

The tab re-reads the stored calibration each time the dialog is shown, so a freqcal bridge call or a different radio's settings made while the dialog was closed are picked up before any Trim press can commit the wrong value.

Controls

Control	Kind	Behavior
Calibration controls	Various	Frequency calibration inputs and Trim control for the connected radio. Re-seeded from the live radio model whenever the dialog opens or the connection changes.

Audio Tab

The Audio tab manages radio audio outputs, compression, PC devices, boost, buffer, recording, and NVIDIA BNR container.

Controls

Control	Kind	Default	Valid Range	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.
Front Speaker: / Mute	Push button	-	-	Mutes front speaker (model-specific).
Audio Compression (SmartLink): Auto / Uncompressed / Opus	Push button	Auto	-	Selects audio codec for SmartLink/LAN. Stored as AudioCompression.
Prevent system sleep while connected	Checkbox	False	-	Keeps OS awake while radio is connected to prevent audio/TCP/UDP stream drops during idle. Stored as InhibitSleepWhileConnected.
PC Audio Devices: Input: / Output:	Combo box	-	-	Picks host audio in/out devices.
Audio Boost:	Toggle button	-	-	Enables extra gain on the client audio path. Stored as AudioBoost.
Audio Buffer:	Text field	200	50-1000 ms	Increases audio buffer in milliseconds for VPN/SmartLink jitter. Stored as AudioBufferMs.
Recording: Radio Side / Client Side	Push button	Radio Side	Radio Side / Client Side	Picks radio-side or client-side recording. Stored as RecordingMode.
Save to:	Text field	-	-	Folder for saved recordings (client-side only). Defaults to Documents/AetherSDR/Recordings. Stored as QsoRecordingDir.
...	Push button	-	-	Browses for recording folder.
Auto-record on TX	Checkbox	False	-	Automatically records while transmitting. Stored as QsoRecordingAutoRecord.
Idle timeout:	Spinbox	120	10-3600 sec	Seconds of silence before recording stops. Stored as QsoRecordingIdleTimeout.
NVIDIA BNR: Autostart Container / Start / Stop / Check Status	Push button	-	-	Controls the NVIDIA