CDI, HSI, OBS, and Heading Selector Explained
A standalone CDI (Course Deviation Indicator) is an instrument that shows your deviation from a VOR radial that is selected using the OBS (Omnibearing Selector) knob located on the instrument itself. An HSI (Horizontal Situation Indicator) is an entirely separate instrument that combines a CDI and a heading indicator.
What are the differences between an OBS, a CDI, a Heading …
The OBS (Omni Bearing Selector) knob is on the CDI, it is not its own instrument. The knob allows the selection (via the outer ring) of the radial (course) you wish to track from a VOR ground station.
How to Navigate Using a VOR: 9 Steps (with Pictures) - wikiHow
Nov 30, 2023 · VOR, short for VHF Omni-directional Range, is a type of radio navigation system for aircraft. VORs broadcast a VHF radio composite signal including the station's Morse code identifier (and sometimes a voice identifier), and data that...
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What is OBS in Aviation? - Aero Corner
The OBS is a selector knob on a navigational radio. It stands for the “Omni-Bearing Selector,” and it enables a pilot to select which direction they wish to fly towards or away from a VOR navigational beacon or GPS waypoint.
How VOR Works: VHF Omnidirectional Range - PilotMall.com
Oct 17, 2024 · A VOR, or Very High Frequency (VHF) Omnidirectional Range, is a navigation system that broadcasts signals on VHF frequencies between 108.0 and 117.95 MHz. These signals spread out in all directions, like spokes on a wheel, and each one is known as a “radial.”
Simple Way to Determine Aircraft Position Using a VOR, CDI, and OBS ...
Easiest way to determine your location using VOR CDI OBS.
VORs: Avoiding Confusion with the TO / FROM Flag - Flight …
Dec 23, 2015 · The Omni-Bearing Selector (OBS) knob lets you select one of these spokes (radials), and the CDI will tell you where you are in relation to your selected radial. But the way this information is displayed is where the confusion comes in.
Interactive VOR Exercise - Embry–Riddle Aeronautical University
Directions. Click and drag on the VOR station or airplane. As they move around, you can see the instruments display the airplane's heading and radial/course information relative to the station. The orange slider at the top can be used to control the airplane's heading.
The ABCs Of VORs - AOPA
Dec 5, 2000 · There are three types of VOR navigational stations: VOR (just the VOR), VOR-DME (VOR plus distance measuring equipment), and vortac (VOR plus the military's tactical air navigation system). Each VOR station can further be classified according to its range - terminal, low altitude, or high altitude.
How it works: Course deviation indicator - AOPA
Jul 1, 2020 · The VOR system has many components, including a ground-based radio transmission station, a panel-mounted navigation radio to receive signals, and a navigator head. The panel’s navigator head includes the OBS (omni-bearing selector) and …
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