Use the Markers option (added in 3.0.11) to annotate the spectrum display as shown below. In general, markers are used for:
Markers are taken from:
Select Markers from the ribbon bar, View, Spectrum pane. Click the button to enable the display, from the dropdown select the options below.
Display a small window with the current frequency entered for you. Just add a title for the marker and press OK.
If selected, entries are added for memory definitions. More information is below.
This is the display where you manage:
In the configuration display you can import and export definitions in:
First select the export option to create a file, the import file format is identical. Typically use a program such as Microsoft Excel to edit a CSV file and XML Notepad to edit XML files. Of course, there are many other options including Notepad.
You can also add DX Cluster spots, more information is here.
Optionally display markers using your memory definitions. In the ribbon bar select Memories, in the Bank panel check [X] Markers.
All receivers have a Signal Meter (S Meter). SDR Console offers a digital bar and a psudo analog meter.