A radial is a magnetic bearing from a VOR or TACAN station.
Radials are always numbered in three digits beginning with 001° and extending clockwise
through 360° (Magnetic North).
Your position can be determined by noting which of the 360 radials emanating from the
TACAN you are on by referring to the tail of the number 2 needle. This MAG bearing from
the station coupled with the direct readout of distance (slant rage) presents an exact location of
your aircraft from a specified navaid.
For example, the instruments depicted on the following page indicate that the aircraft is on the
260° radial 163 nautical miles from the TACAN.
2-4 NAVAID POSITIONING