Now the VOR entries — Page 393, Lesson 408

This is the index of the book — the alphabetical list of topics and the page numbers where they appear. So what I want to do is walk you through the entries that matter for radio navigation, because this tells you exactly where each subject lives in the book. Let's start with the VHF family. Very High Frequency, abbreviated VHF, appears at page 8 — that's the fundamentals of the band itself. Then VHF Direction Finder, which is the ground-based system that takes a bearing from your transmissions, is at page 75. And VHF Omni-directional Range — that's the full name for VOR — is at page 111. So you can see the progression: first the frequency band, then the direction finder, then the omni-directional range. Now the VOR entries. VOR itself is listed at pages 111 and 285. The VOR Transmitter is at page 112, and the VOR Receiver is also at page 112 — so the ground station and the airborne equipment are introduced together. VOR Airborne Equipment is at page 119, and the VOR Deviation Indicator — that's the instrument in the cockpit that shows your deviation from the selected radial — is also at page 119. The VOR Summary is at page 132, which is the consolidation of the whole system. Then we have the combined systems. VOR/DME is at page 261 — that's the pairing of VOR with Distance Measuring Equipment. VOR/DME Frequency Pairing is at page 250, which is the specific arrangement where the VOR and DME frequencies are matched. And VORTAC is at page 116 — that's the combination of VOR and TACAN, the military tactical air navigation system. There's also VOT at page 116, which is the VOR test facility — the ground check signal you use to verify your receiver's accuracy. Now the visual approach aids. Visual Glide Path Indicators are at page 155 — those are the lights that show you the correct glide path on approach. Then the satellite and augmentation systems. VNAV — Vertical Navigation — is at pages 268 and 277. WAAS, the Wide Area Augmentation System, is at page 320. WADGNSS — Wide Area Differential GNSS — is at page 305. WADGPS — Wide Area Differential GPS — is at page 321. And WGS84, the World Geodetic System 1984, the reference datum, is at page 306. Finally, the wave and propagation entries. Waveguide is at pages 56 and 60 — that's the physical structure that guides the radio wave. Wavelength is at page 6, and Waves is at page 5 — the very basics of wave theory. And WEA is at page 217. So that's the index — it's your map of where everything sits. When we actually start the VOR chapter, we'll begin at page 111 with the transmitter and receiver, and build up from there.