VOR Navigation Made Simple: The Station-Centric Approach

What is a VOR and How Does It Work?

A VOR (VHF Omnidirectional Range) is a ground-based radio navigation system that broadcasts signals allowing aircraft to determine their position relative to the station. Think of it like a lighthouse, but instead of a visible beam, it sends out radio signals in all directions. The key to understanding VOR navigation is this: the station is the center of attention. Everything is measured from the station's perspective, not the airplane's.

When you tune a VOR frequency, your aircraft's receiver compares two signals from the station to calculate your bearing—the direction FROM the station TO your position. This bearing is called a radial. VORs have been the backbone of airway navigation for decades, and while GPS dominates today, VOR proficiency remains essential for instrument pilots and is required for many approaches and as a backup navigation method.

What Are VOR Radials?

VOR radials are magnetic courses that extend outward from a VOR station like spokes on a bicycle wheel. There are 360 radials—one for each degree of the compass. The critical concept is that radials are always named by the direction they point FROM the station, not toward it. If you're flying east of a VOR, you're on the 090 radial because the station would look east (090°) to see you.

This naming convention confuses many pilots because we naturally think from our own perspective. Instead, imagine you ARE the station—which direction do you look to see the airplane? That's the radial number. The interactive diagram below lets you drag an airplane around a VOR to see how radials work from the station's perspective.

Notice how the radial number always describes where the station "sees" the airplane. When you move the airplane to the north, you're on the 360 radial. Move it south, and you're on the 180 radial. The station is always at the center, looking outward.

How Do You Read the G1000 HSI?

The G1000 HSI (Horizontal Situation Indicator) displays VOR information in an intuitive format that eliminates much of the confusion associated with traditional CDI instruments. The compass card rotates with your heading, so the display always shows your actual orientation. The course selector lets you choose which radial to track—set it to your desired course and the magenta needle shows that course on the compass.

The CDI (Course Deviation Indicator) bar shows how far you've drifted left or right of the selected course, with each dot representing 2 degrees of deviation. The TO/FROM flag indicates whether the selected course will take you toward the station or away from it. Unlike traditional CDIs, the HSI's rotating display means the needle always points in the direction you should turn—no more reverse sensing confusion.

Which Way Do You Turn When the Needle Deflects?

On a properly configured HSI, the CDI needle always points toward your selected course. If the needle deflects left, turn left. If it deflects right, turn right. This simple rule works because the HSI display rotates with your heading, keeping everything aligned with your actual orientation.

However, this rule only applies when your heading roughly matches your selected course. If you're flying perpendicular to your course or in the opposite direction, the needle still shows the course location but following it requires different thinking. Traditional CDIs cause "reverse sensing" when flying toward the station with a FROM setting (or vice versa). The HSI eliminates most of this confusion, but understanding why it happens helps you navigate any instrument configuration.

How Do You Find Your Position Using a VOR?

Finding your position with a VOR follows a simple three-step procedure: Tune, Identify, Twist. First, tune the VOR frequency on your nav radio. Second, identify the station by listening to the Morse code identifier—never navigate using an unidentified station. Third, twist the course selector until the CDI needle centers with a FROM flag displayed. The course index now shows your radial—the direction from the station to your position.

For example, if the needle centers with 145 degrees selected and FROM showing, you're on the 145 radial, positioned southeast of the station. This tells you which line you're on, but not how far along it. To pinpoint your position precisely, either use DME (Distance Measuring Equipment) to get your distance from the station, or cross-reference with a second VOR to find where two radials intersect.

How Do You Intercept and Track a VOR Radial?

To intercept a VOR radial, first set your desired radial in the course selector. If you want to track outbound (away from the station), the radial number goes in directly with a FROM flag. If you want to track inbound (toward the station), set the reciprocal course with a TO flag. Now look at the CDI needle—it shows which side of the radial you're on.

Fly a heading that takes you toward the needle. For example, if tracking the 270 radial outbound and the needle is deflected left, you're north of the radial, so fly a southwesterly heading to intercept. As the needle starts centering, reduce your intercept angle. When centered, turn to match the selected course and make small corrections (5-10 degrees) to keep it centered. The closer you are to the station, the more sensitive the needle becomes.

What Are Common VOR Navigation Mistakes?

Practice with the Interactive Simulator

The best way to master VOR navigation is hands-on practice. Our interactive simulator below combines a map view with an accurate G1000 HSI display. Start in Explorer mode to experiment freely, then switch to Lessons mode for guided practice with immediate feedback.

Use the simulator to practice identifying radials, setting courses, and understanding the relationship between your position and the CDI/TO-FROM indications. The three guided lessons will walk you through essential VOR skills:

1. Lesson 1: Identify what radial you're on
2. Lesson 2: Set a course to fly direct to the VOR
3. Lesson 3: Intercept and track a specific radial

Additional Resources

• IFR Currency Requirements — Stay proficient with regular instrument practice
• Instrument Rating Training Guide — Complete guide to earning your instrument rating
• VOR Approaches with GPS Guidance — Using GPS as backup for VOR approaches