Tuning

Tune the decoder, not the radio. Every Device starts on Auto: set a channel's frequency and the radio moves its window to cover it.

Auto

The radar button next to the Device dial is lit while Auto is on.

On Auto, the Scope does not pan the radio. Drag a channel marker to move that decoder.

With several decoders, the radio picks a window that covers as many as it can. The count on the Device node, such as 2/3, shows how many it hears.

Manual

The radio stays where you put it. Channels outside its window stop until it covers them again.

Tuning the radio itself, from its dial, the keyboard, or the Scope, switches to Manual. SDR-- asks first. Tick Don't show again to skip the question. Press the radar button to return to Auto.

Use Manual to watch a fixed band in the Scope, or when no decoder is wired.

Lock

A lock next to a dial stops tuning by hand.