Boeing 777-200 Tutorial/KSFO-KLAX: Difference between revisions

The Automatic Direction Finder uses a transmitter and aerial on the ground , an NDB (Non Directional Beacon) that allows the ADF instrument to point to the aerial that is tuned at a specified  frequency . So, no matter what direction you are travelling in, the needle (the "middle" portion that moves from side to side tells you how close or far away you are from your desired course steer in the opposite direction to the direction it is moving to move back to the desired course this part of the needle is called the CDI (Course Deviation Indicator). The main part of the needle points to the station. In the RMI (Radio Magnetic Indicator) we can select a plain ADF frequency or the more information rich VOR signal, which is similar but has more information. It points to a selected direction 0-360 to the beacon you which once the needle is pointing at twelve o' clock or straight forward toward your selected VOR ( vor = Vhf (very high frequency) Omnidirectional Range-finder )you can press F12 and enter your current heading plus or minus 180, in the radial  box on the nav1 line.