Longitude of ADF station. Returns 0 if no ADF station is tuned in. Measured in degrees from -180 to +180. West longitude is positive unless and East_Longitude command has reversed the orientation. Read-only.
Example
WEST_LONGITUDE
ADF_FREQ = 362
IF PLANE_LON > ADF_LON THEN
PRINT "You are west of the NDB."
ELSEIF PLANE_LON < ADF_LON THEN
PRINT "You are east of the NDB."
ENDIF