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VOR (VHF Omnidirectional Range) is a radio navigation technology used by aircraft to determine their position and remain on-course.

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Time to VOR / Aircraft Speed

I'm trying to figure out the calculation to these questions: "A pilot tracking a VOR turns 90 degrees from current heading. The pilot notes that it takes 3.0 minutes for the plane to intercept the ...
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2answers
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What does the letter “D” next to the VOR frequency and name mean?

In most charts there is the letter D next to the VOR freq. What does this mean? I assume the H and L in brackets in other charts mean high and low VORs (correct me if im wrong). But what does the D ...
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1answer
77 views

What are the VOR channels used for?

I'm looking at different VORs on a sectional chart and I see the frequencies but I also see a channel number associated with them as well. What are these channel numbers and how do you use them?
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97 views

Calculating distance from VOR station with radial and heading

I am currently struggling to understand the following question regarding a VOR station and an aircraft. The aircraft is found in the 30deg radial from the VOR station at time T(1) and T(2). During the ...
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3answers
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Are NDBs and VORs dying as a navigational method?

I am new to aviation, so bear with me on this question: I have read in multiple places that the VOR/NDB navigational aids are dying out to GPS. Is this true? Are more modern aircraft being built with ...
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1answer
277 views

Why wouldn't KJFK offer the ILS for 22L?

(Source: Flightradar24) The above was from last Sunday around 17z. I was watching FR24 with the ATC feed. The airport was operating in 'arrival priority' with approaches to both 13L (Canarsie) and ...
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1answer
119 views

Reading the VOR dial to find magnetic bearing to station

In my PPL trial test, I have the following question regarding VOR: Consult Figure 3, Illustration 6. On a magnetic heading of 160°, the magnetic bearing to the station is: 045° 205° 165° 270° (See ...
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How do I determine which radial intercept angle to use?

I'm studying for the (EASA) Instrument Rating exam and I found several questions about radial intercept angles in sample exams but nothing in the books I've studied and my flight instructor doesn't ...
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2answers
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TFR based on an invisible VOR?

A new TFR was recently published, which references the Riverside (RIS) VOR/DME. When I look at the relevant chart in SkyVector, I don't see such a VOR in that area. When I put the ID "RIS" into ...
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3answers
946 views

Is VOR identification automated in modern avionics?

Is the VOR identification via audible Morse code automated in modern autopilots / avionics? Or does a pilot in an A380 still sits in there, listens and compares the .-. .. -.. to her charts?
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123 views

Does an aircraft equipment suffix denote how many VOR radios are installed?

I'm studying IFR. Does an aircraft equipment suffix specify if and how many VOR radios are installed? I'm guessing that the suffix is used by ATC to know if they can give you an RNAV or a an approach ...
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105 views

What is space modulation? Its application is instrument landing systems [duplicate]

How the modulation depth changes with respect to azimuth for the Receiver of aircraft when it is using localiser or glideslope?
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1answer
273 views

Is my understanding of magnetic variation and declination (for a VOR) correct?

AIXM (the XML-based exchange model for AIP by Eurocontrol and european AIS) defines the following properties for a VOR: codeTypeNorthA code indicating the ...
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127 views

How does one reverse direction on a VOR radial?

Tracking inbound, say on R-270, how do I track outbound on the same R-270? What intercept heading shall I fly?
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2answers
204 views

Could a pilot navigate using distances and radials from an RNAV waypoint, similar to VOR navigation?

I know that typically RNAV navigation involves a list of waypoints, and the aircraft simply flies from one point to the next. What I'm curious about is if a procedure could be developed (as a special ...
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294 views

What are the differences between VORTAC's and NDB's?

What are the differences between VORTAC's and NDB's?
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366 views

What are the differences between VOR/DME and VORTAC? [duplicate]

Yes, long answers are needed but what are the differences ?
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1answer
845 views

What is the VOR reference signal?

What is the VOR (VHF Omnidirectional Range) reference signal? I have to calculate the spectrum of this signal.
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2answers
135 views

Are VOR frequencies static?

I am a brand new student pilot pursuing my private cert. I don't need to know this for a while, but I'm trying to learn about VOR navigation to enjoy my sim flights more, in the meantime. My ...
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1answer
173 views

Do UAVs use ground-based navaids?

When I Googled it seems it is not common to use Vortac like systems from UAVs as a backup to GNSS outages, like in manned aircraft. And also I haven't seen any equipment designed for just UAV ...
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2answers
2k views

Why is there a grid below the antennas of an VOR?

A few days ago I made a trip to the VOR-DME near my local airport LOWG, because I always wanted to see one. It's GRZ on 116.2. When I was there, I wondered why there is a giant metal grid under the ...
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1answer
223 views

Why is there a GPS/RNAV waypoint co-located with a VOR?

There is an RNAV waypoint named STYCK co-located at what appears to be the exact location of the LOA VOR (coordinates match precisely as well). Why would the creation of a waypoint be necessary if IFR ...
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How can pilots use receiver function of VOR during lost comms? [duplicate]

In the event of lost comms, are pilots encouraged to try the receiver of the VOR nearby if the VOR provides the function? If they are, what's the proper use of the VOR receiver? Just tune in the VOR ...
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3answers
422 views

Are nearest VOR stations always tuned to?

I am flying under IFR. My current leg route is Z401. I am between TIPRU and VOR VLM (VLASIM). I am on inbound radial 304° VLM: This is an RNAV route. But let us imagine it is non-RNAV and I am ...
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2answers
4k views

Can a pilot use their GPS/FMS to fly a VOR or NDB approach?

GPS is more accurate than a VOR or NDB signal. Can we use a GPS to fly a VOR or NDB approach from the initial approach fix through the missed approach and hold? I know there are two types of ...
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1answer
1k views

Do some modern VORs not spin? [duplicate]

Today in Ground School we learned about radio navigation. I read here that the rotating part of the VOR rotates at 1,800 RPM (wow! Is it an electric motor that spins it?) We know that modern Active ...
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2answers
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How wide is the cone of confusion above a VOR and NDB?

I saw in book that the cone of confusion of VOR is 40 degrees, and NDB is 50 degrees of each side! Isn't it too much? Maybe it's a mistake, or old information(book printed in 2004) Clarify please: ...
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1answer
773 views

Why do we have to manually tune VOR receivers?

As the VOR frequency is automatically selected when the DME is selected, under what system conditions is manual tuning of the VOR required? (aviation-safety-bureau.com)
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1answer
1k views

What causes the phase to change in a VOR?

I get the light house analogy, and how the VOR essentially works, although I'm wondering what actually causes this phase shift? As it hits magnetic north the variable and reference signal are in phase,...
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1answer
812 views

VORTAC symbol over KMOT airport - is the small dot the center?

I am looking at KMOT and I see a little dot over the airport symbol, is that the center of the VORTAC?
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2answers
765 views

How can a pilot fly a distance of 594 NM connecting two VOR's?

I was researching worldwide airway designations when I stumbled upon this airway in Brazil: G678 with an MEA of 15,000 feet and a distance of 594 NM (nautical miles) between navaids. It's drawn ...
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1answer
8k views

What is the difference between conventional VOR and Doppler VOR?

There are two types of VOR (VHF Omnidirectional Range) navigation beacons; the conventional VOR (CVOR) and the Doppler VOR (DVOR). What are the differences between them? Specifically I would like to ...
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3answers
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Why is there no “reverse sensing” on a horizontal situation indicator (HSI)?

When we use this awesome instrument for navigation (not only for ILS/LOC), it is said that there is no reverse sensing (except for back course thing). I kind of understand why pilots are confused when ...
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1answer
373 views

Why would a VOR be decommissioned leaving the DME?

As can be seen on this question and this question the OJC VOR has been decommissioned but the DME is still active. What would be the purpose in having DME without VOR?
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How is the serviceability of VOR unit part CI 215 checked?

In the VOR receiver we use two antenna, which are joined with the help of an assembly (part # CI 215), then the output of these two antenna is fed to RxR. My question is: how do we assure the ...
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1answer
800 views

Why do we need DME or RNAV when using VOR navigation above FL240?

According to FAR 91.205(e) there must be DME or RNAV system when a pilot uses VOR navigation above FL240. However, why does the regulation say we need it from FL240, not from FL180 where class A ...
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3answers
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When is a VOR shown on maps?

I do not understand when the Compass around a VOR is and is not present on maps. For example, around Kansas City: VOR OJC has been deactivated for quite some time now. But its compass is still ...
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What is the primary means of IFR navigation for private pilots?

I have been doing a lot of reading into IFR navigation, and have been looking at the various instruments and systems that are used. I am going to exclude GPS here, as I have been focussing on some of ...
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2answers
1k views

How does CDI work when flying to VOR without DME?

Let's show what I mean on an example. Flying towards a VOR (not knowing the distance), HSI course pointer pointing towards the VOR. Let's say the plane is really far from the VOR and we turn ...
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1answer
2k views

Do real aircraft have something close to the GPS/NAV modes in FSX?

I am a long-time flight simulator player and also very interested in aviation. In FSX, all aircraft have a GPS/NAV knob which allows the pilot to switch between direct GPS autopilot and VOR navigation ...
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5answers
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Can VOR indication be reliable if one of its antennas breaks?

What will be the reliability of the VOR indication inside the cockpit if one of the two outside antenna is broken ? Can we trust it to make a VOR approach? What will be the consequences assuming ...
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1answer
654 views

How are there some Victor airways that exceed the service area of the VORs they are identified by?

As you can see here, V267 has a length of 149nm, is defined by the Craig VOR (CRG) and the Dublin VOR (DBN) and has a MEA of 3000. According to the AIM, the Service volumes of VORs never reach more ...
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2k views

How does the VOR receiver pick up the signal and how are the needles controlled?

Knowing the basic principle of a VOR and how it works, I am interested to know how the receiver works. What exactly makes the needle deflect? And how does this deflecting mechanism know how much to ...
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5answers
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Where to find a waypoints/fixed points, navaids and airports database?

I wonder if it is possible to download a database with waypoints, navaids, airports and airways between them. I've been working with AIP documents but it's difficult to get raw information from them ...
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4answers
3k views

How are VORs oriented near the magnetic poles?

I noticed on SkyVector that, for example, the Resolute Bay VOR (YRB) and Baker Lake VOR (YBK) seem to be oriented in such a way that the 360 radial is pointing in the direction of true north (and I ...