Figure 16-31. Radio magnetic indicator.  finder (ADF) bearing information.  [Figure 16-31]  Remote  indicating compasses were developed to compensate for  errors in and limitations of older types of heading indicators.  The remote compass transmitter is a separate unit usually  mounted in a wingtip to eliminate the possibility of magnetic  interference. The RMI consists of a compass card, a heading  index, two bearing pointers, and pointer function switches.  The two pointers are driven by any two combinations of a  GPS, an ADF, and/or a VOR. The pilot has the ability to select  the navigation aid to be indicated. The pointer indicates the  course to the selected NAVAID or waypoint. In  Figure 16-31, the green pointer is indicating the station tuned on the ADF.  The yellow pointer is indicating the course to a VOR or GPS  waypoint. Note that there is no requirement for a pilot to  select a course with the RMI. Only the selected navigation  source is pointed to by the needle(s).  The following describes a step-by-step procedure for tracking  to and from a VOR station using a CDI.  Figure 16-32 illustrates the procedure.  First, tune the VOR receiver to the frequency of the selected  VOR station. For example, 115.0 to receive Bravo VOR.  Next, check the identifiers to verify that the desired VOR  is being received. As soon as the VOR is properly tuned,  the course deviation needle deflects either left or right.  Then, rotate the azimuth dial to the course selector until the  course deviation needle centers and the TO-FROM indicator  indicates “TO.” If the needle centers with a “FROM”  indication, the azimuth should be rotated 180° because, in  this case, it is desired to fly “TO” the station. Now, turn the  aircraft to the heading indicated on the VOR azimuth dial or  course selector, 350° in this example.  If a heading of 350° is maintained with a wind from the right  as shown, the aircraft drifts to the left of the intended track.  As the aircraft drifts off course, the VOR course deviation  needle gradually moves to the right of center or indicates the  direction of the desired radial or track. Figure 16-32. Tracking a radial in a crosswind.  33  30  24  21  15  12  6  3  S  W  E  N  HDG  A A D D F F NAV  NAV N  E  S  W  3  33  24  21 15  12  30 6  O B  S  33 30 24 2I I5 I2  6  3  N  E  S  W  3  33  24  21 15  12  30 6  O B  S  33  30  2I  24 I5 $^{I2 }$ 6  3  N  E  S  W  3  33  24  21 15  12  30 6  O B  S  30  33  24 2I I5 I2  6  3  N  E  S  W  3  33  24  21 15  12  30 6  O B  S  33 30  24 2I I5 I2  6  3  N  E  S  W  3  33  24  21 15  12  30 6 O B  S  33 30  24 2I I5 I2 6  3  N  E  S  W  3  33  24  21 15  12  30 6 O B  S  33 30  24 2I I5 I2 6  3  N  E  S  W  3  33  24  21 15  12  30 6  O B  S  33 30  24 2I I5 I2 6  3  N  E S  W  3  33  24 21  15 12  30  6  O B  S  33 30  24 2I  I5 I2  6  3  3  2  1  4  5  7  8  FROM  6  FROM  0  27 6 18  FROM  TO TO WIND  TO  BRAVO BRA  115.0 TO  TO  Tracking With VOR  16-25 