Questions tagged [radio-communications]

Radio is the primary way that pilots communicate with air traffic control and with other aircraft.

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3
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1answer
187 views

When do I have to contact Centre when departing/arriving at an airport with an ATF?

I'm looking at St-Frédéric airport in Quebec, Canada (CSZ4) and specifically at the "COMM" section. It says that there is an Aerodrome Traffic Frequency (ATF) on 122.8 but it also seems to say that ...
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3answers
853 views

What are the radio characteristics of communications between tower and aircraft?

I have a few questions on the types of antenna used for tower-aircraft comms. What type of antennas are used today for tower-aircraft comms? Are they directional or omni-directional? What's the ...
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3answers
1k views

Can one “create” a private interpilot air-to-air frequency to chat?

I've been looking for an answer to this for the past couple of hours and can't find anything on the matter. (Yes, I've read this What radio frequencies are used for intercom in formation flying? , ...
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1answer
184 views

How many radio transmissions per hour occur on a given frequency over Europe and North Atlantic?

For one of our research projects, we want to simulate a north atlantic flight from Frankfurt, Germany to the U.S.. To make it realistic, we are also simulating air traffic control - both instructions ...
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1answer
210 views

How the Log Periodic Dipole Antenna of Localiser help in varying modulation depth?

Here Albert Helfrick speaks about 40% modulation depth for each tone in a localiser radio signal. However latest manuals of ILS manufacturers and google source speaks about 20% modulation depth, not ...
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2answers
338 views

What minimum radio communication equipment is required in a homebuilt aircraft in India?

Let's say I am building a single seat aircraft for flying in one's own country(India). What should be minimum set (Not only from compliance prospective but to have core set of communication for ...
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2answers
3k views

When replying to ATC, callsign first or last?

When I was in flight school, some instructor told me that it is the unknown ICAO standard that you should reply to an ATC call with your callsign first, like this: ...
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2answers
901 views

What is the name or part number of the Bose 'Lemo' aviation headset connector?

In a similar direction to this question, I was wondering if anyone knows the name or part number of the connector commonly featured on Bose aviation headsets such as the A20. It is commonly know as ...
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4answers
3k views

What radio equipment do pilots use to communicate with ATC?

I know of the transponders used for communication by Air Traffic Control, but apart from that, what radio equipment do pilots use to talk to ATC? What modulation method is used?
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1answer
627 views

Why is the Departure leg of the traffic pattern being mistaught as Upwind?

I hear a LOT of newer pilots and CFI's erroneously referring to the Departure leg of the traffic pattern as the Upwind. Ref. A.I.M. Sec 4-3-2. Actually had a Tower controller tell me "I'll call your ...
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1answer
669 views

What is the sequence of ATC frequencies for final approach at JFK?

Recently I was listening to liveATC.net and tried to understand the sequence of operations for the voice communications. However, it seems that there are a lot of frequencies for the approach ...
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2answers
805 views

Can a pilot still land if the tower gives confusing Information? [closed]

Recently an airplane crashed at Kathmandu airport in Nepal. The people that owned that plane claim that confusing information was given to the pilot by the control tower, and as a result the plane ...
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1answer
2k views

How can multiple airplanes prevent simultaneous communication between ATC?

If two planes try to talk at the same time, do you hear nothing or both? Let's say ATC clears someone to land and they read back. I wait 4 seconds and then ask them something, how do I know another ...
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2answers
815 views

Is it possible to isolate COM1 and COM2 on a Garmin G1000?

Is it possible to isolate COM1 to one pilot and COM2 to the other pilot? When I'm getting the ATIS it's hard to listen to both COM channels sometimes depending on the amount of traffic. I used to be ...
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1answer
101 views

Could maintenance data be downloaded via ATC facilities?

Could aircraft send maintenance data to the airport via ATC facilities (e.g., tower, TRACON, enroute)? Or are they only used for air traffic control?
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1answer
548 views

How works the system of frequency for aircraft commercial Airline [closed]

Hello I have to present a weather radar technology but i m block on Air convention of communication. I need to know how they exactly attribute licence to an aircraft and how all this aircraft can ...
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3answers
2k views

Do small aircraft have sockets for passenger headsets?

I am currently training for my PPL. in the Cessna 182s we use I've only ever noticed two sets of ports for the headsets. If there were additional passengers in the back seats, how would they ...
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0answers
146 views

How HF wire antennas on older aircraft are protected from lightning and static discharge?

For HF antennas installed on some older aircraft with wires running from points on the fuselage to the tail, what precautions are used to prevent lighting strikes or P-static accumulation from ...
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3answers
758 views

Does ATC react to pilot position reports?

Following previous questions on position reporting: When do pilots have to submit position reports? What are pilot position reports? Does Air Traffic Control somehow react to pilots submitting ...
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1answer
313 views

How was the 'steer' bearing given? [duplicate]

From the USAF c. 1955 training film No Sweat, there is a technique called 'steer'. By pressing the PTT button for a few seconds, the tower controller is able to determine the pilot's bearing. What ...
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1answer
740 views

How do radio communications work en-route for intercontinental flights over the oceans?

What is the altitude one must reach in order to communicate with the ground? Is it possible to talk to ground via radio flying over the oceans? How to know the exact position of an aircraft over the ...
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2answers
874 views

When do pilots have to submit position reports?

While over non-radar controlled airspace (e.g. the North Atlantic, the Pacific, or over vast parts of Africa), pilots will submit position reports. Is there a regular time interval in between position ...
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1answer
778 views

Which radio frequency is used during a flight interception? [duplicate]

What kind of communication do the intercepting and intercepted aircraft use? Is it the usual air-to-air frequency or the international emergency frequency?
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1answer
1k views

Which frequencies does VDL Mode 2 use when used via the ATN (rather than ACARS)?

If I understand the slide below correctly (source), CPDLC can be used either via ACARS or via ATN. I know that, in the case of VDL Mode 2, there are specific ACARS frequencies. Which frequencies are ...
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2answers
1k views

How to guess the actual name of the SID, waypoint, etc., if you have never seen it when told by ATC?

Sometimes it's very tricky as those identifiers are not normal words. For example how to find a way-point you have to go direct to if it's not on the flight plan? SID and STARS can be reviewed before ...
6
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1answer
929 views

How common are mayday calls?

How often does an aircraft make a mayday call? I assume when confronted with an emergency on board, they will first deal with it, and not waste time contacting any one who would not be able to help ...
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4answers
25k views

Why do airplanes use MAYDAY when in danger but ships send SOS?

I thought SOS means "save our souls", but apparently it doesn't. But ships send SOS when in danger and they used Morse code. Why do airplanes use MAYDAY?
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1answer
9k views

How does an Airbus aircraft connect to the Internet? [duplicate]

I would like to understand better where (physically in the aircraft) and how the Internet connection is received on an Airbus aircraft, in particular in an Airbus A380, and then how this system is ...
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2answers
1k views

Where are US FIS-B UAT ground facilities located?

In the US there are Flight Information Services Broadcast (FIS-B) transmitters strategically located to provide WX, NOTAMS and other flight information utilizing the ADS-B infrastructure. ADS-B has ...
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5answers
5k views

How do commercial pilots keep situational awareness of their current call sign?

Air transport pilots operate flights with a variety of flight numbers, often with multiple flights in the same day. This means, as a result, the callsign that they are using changes as well. Also, ...
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3answers
843 views

Is a license required to transmit in the designated aviation band?

Is an FCC license required for people to operate a radio in the aviation band?
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1answer
255 views

Do overland long-haul flights have something similar to SELCAL?

This question will be regarding airlines, flying high altitudes. As with short flights, you are in contact with local controllers, then get passed off to enroute and local again. I am familiar with ...
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1answer
549 views

What are the ways to perform air traffic control on long distance flights? [closed]

I have a few questions on air traffic control. From my understanding, there are three major ways of sending control messages to an aircraft: 1) Direct radio link from control as long as the aircraft ...
3
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1answer
293 views

How airplanes of new generation communicate with ATC over remote areas? (North Atlantic Region)

How new airplanes get in contact with ATC while flying in remote areas? Do they use VHF datalink (VDL) ?
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2answers
2k views

How does air traffic control communicate with an aircraft?

I have a question on voice/data communication between air traffic control and an aircraft. I read somewhere that control communicates with an aircraft directly, through a direct radio link, while it'...
25
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1answer
8k views

Callsign includes the term 'with Kilo' ; What does that signify?

In FS-X I sometimes see with Kilo at the end of a Call-sign. For example the one from last night had Mike Sierra Alpha Bravo with Kilo What does With Kilo mean?
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1answer
596 views

Is there a Non Directional Beacon(NDB) morse code sound database?

I need to know what is the morse code sound of: CALL: OZ Khz: 212 QTH: RUCKR lat: 31.2292 long:-85.7917 I found this website, but I could not find the sound of different NDBs: http://classaxe.com/dx/...
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1answer
220 views

What good reference books for aviation (ATC & AOC) systems are there? [closed]

I am looking for a good reference book or research paper that describes the services and applications offered by air traffic control and Aeronautical Operational Control in detail. Everything I have ...
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5answers
9k views

What prevents someone from hijacking a radio frequency mid-air?

For someone who wants to stay anonymous and probably terrorize the skies, what protective measures do we have? Without even thinking too deep, I can imaging the following scenarios for someone who's ...
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1answer
1k views

Is there a list of accidents due to poor communication in English?

I would like a list of accidents satisfying the following criteria: Poor communication between ATC and pilots was judged to be a major factor in the accident; English was the language of ...
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2answers
290 views

What ground-based, airline job in the 1940s could have involved radio communications?

My mom worked for United Airlines in the mid 1940s in some communications capacity: she communicated by radio with United aircraft only, and she wasn't an air traffic controller. She went to school ...
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1answer
620 views

How to communicate a circling approach over CTAF?

The FAA ATC job order says: Circling approach instructions may only be given for aircraft landing at airports with operational control towers. But I could not find a phraseology example that ...
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2answers
2k views

Where do I find a complete Volmet frequencies list for Europe? [closed]

Is there any website or ,even better, book to buy to get such frequencies?
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1answer
441 views

When must full aircraft registration be used as radio callsign?

What are the FCC or FAA regulations that require one to use their full registration as radio callsign, unless abridged by air traffic control, when using an aircraft radio for transmitting? It seems ...
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4answers
5k views

Can normal PC headsets replace 'aviation' headsets?

Aviation headsets have Noise Reduction and a larger jack (1/4") than most PC headset counterparts (1/8"). But there are many excellent quality PC headsets with sound-proofing materials which eliminate ...
5
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1answer
3k views

What are the reasons for the particular range of VHF and UHF frequencies?

Generally, VHF frequency range is 30~300MHz and UHF is 300~3,000MHz. (according to Wikipedia). However, in ATC, VHF frequency range is 117.975-137MHz and UHF is 225MHz-400MHz. Why is there a ...
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2answers
2k views

Is there an ATC radio backup?

I was thinking, what would happen if the radio systems for an ATC tower fail due to power loss or faulty systems? Is there any kind of backup radio that would be used to contact the planes and/or ...
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1answer
515 views

Are peer-to-peer communications feasible between aircraft?

I have several questions regarding plane-to-plane communications (P2P), by which I mean air-to-ground communications where instead of a satellite, planes act as the intermediate nodes between a given ...
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3answers
1k views

Why is radio communication still used?

Why is radio still the method of communication from the ground to air? If i'm not mistaken, cellular services should be much better in quality and reliability
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2answers
493 views

ATC interruptions, when is it okay/overlooked?

Having recently completed my first solo flight, the tower gave me my taxi instructions, and then congratulated me, as my instructor was hanging out in the tower with the controllers at the time. It's ...

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