Minnesota Public Radio slideshow:
Faulty navigation beacon may have been factor in Wellstone crash
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The VOR radiates a signal in 360 radials, one for each degree on the compass. The VHF carrier signal transmits a Morse code station identifier along with its navigational components. By tuning in a specific "radial," a pilot can tell exactly which way to fly to reach the airport. (MPR Photo/Bob Collins)

The VOR radiates a signal in 360 radials, one for each degree on the compass. The VHF carrier signal transmits a Morse code station identifier along with its navigational components. By tuning in a specific "radial," a pilot can tell exactly which way to fly to reach the airport.

(MPR Photo/Bob Collins)
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