Check the Radio's Live DC Supply Voltage¶

The Meters applet shows the supply voltage reported live by the radio. Use it to confirm your DC power source is within a healthy range during operation.

Before you start¶

AetherSDR must be connected to the radio. The Meters applet requires an active radio connection.
The applet panel must be visible. If it is hidden, enable it via View > Applet Panel.

Steps¶

Click the MTR tray button on the right sidebar to open the Meters applet.
Read the +13.8V gauge. The label in the center of the bar updates live to show the current voltage — for example, +13.82V.

What each control does¶

Gauge	Valid range	Red above	Behavior	Accessibility
+13.8V	10.0–16.0 V	15 V	Displays the supply voltage reported by the radio. The gauge label updates dynamically to reflect the live value (e.g. `+13.82V`).	Accessible name: "Supply voltage"
PA Temp	0–120 °C	70 °C	Displays PATEMP meter reading from the radio.	Accessible name: "PA temperature"
Main Fan	0–3000 rpm	2500 rpm	Displays MAINFAN meter value from the radio.	Accessible name: "Main fan speed"

There is no persisted setting key for these gauges. They have no configurable defaults.

Accessibility notes¶

Each gauge has an accessible name set for screen reader compatibility: - PA Temp gauge: "PA temperature" - Supply voltage gauge: "Supply voltage" - Main Fan gauge: "Main fan speed"

These names are announced when the gauge receives focus or is navigated to with assistive technology.

Tips¶

The gauge label changes on every telemetry update from the radio, so the value shown in the bar center is always current — it is not a static placeholder.
The bar fills cyan in the normal range and turns red above 15 V. A red bar indicates a supply voltage that is above the expected operating range.
The PA temperature gauge turns red above 70 °C. If this occurs, reduce transmit power or duty cycle.
The Main Fan gauge turns red above 2500 rpm. This is normal during high-power operation and indicates the cooling fan is working as expected.

Troubleshooting¶

Gauge shows no movement or a fixed label — The radio is not connected, or the telemetry stream has not started. Confirm the connection status and reconnect via Settings > Connect to Radio....