Nav-Radar Calling is an add-on for the JF Vulcan, although it can be used with any aircraft in MSFS.

The Vulcan relied heavily on the Navigator-Radar (Nav-Rad) for navigation using its H2S Mk. IX ground radar.

NavRadar Calling ("NavCall") gives voice commands to guide you to waypoints when not using GPS and where there is no VOR, ADF, or TACAN.

You specify userpoints in Little Nav Map and export them to a csv. Or manually edit the waypoints.csv file in the install folder

NavCall then imports that csv file. 

On activaton "Start Calls', the voice will tell you where to steer and how far or how long to go.

When you select "Bomb mode" it will also call for bomb bay open, bombs away, and close bomb bay doors.