Provide a custom CA certificate file when connecting to an MQTT broker that uses a self-signed or private Certificate Authority. When no CA certificate file is specified, AetherSDR uses the system CA bundle.
Checkbox that enables TLS encryption. Checking it auto-switches the port from 1883 to 8883 (and vice versa when unchecked).
unchecked
MqttTls
CA cert
Text field for the CA certificate file path. Visible only when Use TLS is checked. Leave blank to use the system CA bundle. The Browse... button opens a file selection dialog.
Read-only group box that lists topics published automatically when MQTT is connected. Each topic can be toggled on or off via a checkbox. Topics with a grayed-out checkbox are always active and cannot be disabled.
Read-only group box that lists topics subscribed automatically when MQTT connects. Each topic can be toggled on or off via a checkbox. Topics with a grayed-out checkbox are always active and cannot be disabled.
Note: The defaultEnabled column shows the initial state when per-topic gating was introduced in v26.6.3. For topics listed as always on (Gateable = No), the checkbox is grayed out and cannot be changed.
Connection fails with "certificate verify failed" — The CA certificate file path is incorrect or the certificate does not match the broker. Verify the file path and that the certificate is the CA that signed the broker's certificate.
Publish or subscribe topic not working — Check the Internal AetherSDR Topics section to ensure the desired topic is enabled (checkbox checked). Topics can be individually disabled to reduce network traffic.