Questions tagged [radio-communications]

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

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1 answer
60 views

Multiple COMM types on the same frequency?

In the manual for the Garmin GNC 255 on page 13, it is stated that: When connected to a position source, the nearest station identifier will be shown for the selected frequency. Frequencies with ...
22 votes
5 answers
7k views

Is it acceptable to abbreviate “Foxtrot” to “Fox”?

My instrument instructor pointed out that I’ve been saying “Four Seven Fox” instead of “Four Seven Foxtrot”. I realize I’ve been doing this for years now, but this is the first I’ve ever been called ...
0 votes
4 answers
521 views

Why are we still using audio to communicate between ATC and Pilot?

Amidst the recent Japan Airlines 516 crash at Haneda and multiple others in history like the famous KLM/PanAm at Tenerife, it has always bothered me that these accidents were so easily preventable ...
0 votes
1 answer
145 views

Can a radio on VOX detect a loud tone and interpret as a cut on transmission (coming from pilot/cockpit)?

Can a radio using VOX detect a short tone and interpret it as a signal for cutoff of audio signal/transmission? this is A/G radio communication using a Schmid radio
1 vote
2 answers
160 views

How impactful could an ATC-specific speech-to-text AI model be for the aviation industry?

Various initiatives, such as the European SESAR 3 program, the Airbus Speech Recognition Challenge, or Appareo's technology, highlight a growing interest in tailored Automatic Speech Recognition (ASR) ...
3 votes
3 answers
47k views

Do ATC say "Climb to XXXX on standard" or "Climb to standard XXXX" or something else?

Do ATC say "Climb to XXXX on standard" or "Climb to standard XXXX" or something else? By "standard" I'm referring to altimeter pressure settings (set to standard pressure)...
0 votes
1 answer
230 views

How do these lines sound as ATC communications?

These are translated lines from a fictional story in Chinese, written by someone who (like me) does not work in aviation and therefore does not have firsthand knowledge of these things. Therefore, it ...
6 votes
2 answers
296 views

Radiotelephony Practices of American Pilots in Comparison to ICAO Standards

As a commercial pilot with experience in various airspaces, including frequent interactions with American pilots, I've noticed a distinct difference in their radiotelephony etiquette compared to the ...
4 votes
4 answers
2k views

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

What type of antenna are used today for tower-aircraft comms? Are they directional or omni-directional? What's the range of data rate (in kbps) that these antennas can provide? Also, is there any ...
1 vote
1 answer
177 views

Why and how can TCAS and SSR transponder work at the received frequency of each other?

The TCAS sends interrogation pulses at 1030 MHz and receives replies at 1090 MHz. And the transponder replies interrogations at 1030 MHz receiving at 1090 MHz. There could be interference between them,...
20 votes
5 answers
9k views

How did aircraft communicate during early air travel?

During the initial era of air travel how do the pilots/Navigation officers would communicate with ground stations? Do they use radio communication? Or Telegraph was used?
1 vote
2 answers
431 views

Can I share ACARS messages online?

ACARS messages are transmitted via radio just like normal ATC communications are. In the UK, for example, it is illegal to listen to and broadcast ATC chatter. Does the same apply to ACARS? If an ...
2 votes
2 answers
171 views

Origins and Efficiency of the Phonetic Alphabet in Aviation

I’m curious about the history and practicality of the phonetic alphabet (Alpha, Bravo, Charlie, Delta, Echo, etc.) used in aviation communication. While I recognise its universal application in ...
0 votes
1 answer
132 views

How might ATC phrase an instruction to a pilot to maintain a certain speed and establish glide path?

What might an ATC say to instruct a pilot to maintain a certain speed and establish glide path? My attempts (as someone who does not know much at all about how a plane is piloted) are: "Maintain ...
0 votes
1 answer
150 views

How might an ATC ask a pilot to check the weather conditions at a certain location?

(Working on a translation that involves radio communications dialogue.) Say the location is X nautical miles from the aircraft to a direction that's between the Y o'clock and Z o'clock direction, what ...
0 votes
2 answers
138 views

What might an air traffic controller say to approve a request from a pilot for a certain heading?

I'm translating something that involves radio communications dialogue. Two questions, actually: How would a pilot request a particular heading? (Does this ever happen?) E.g. something like "...
4 votes
3 answers
3k views

Do civilian aircraft transiting through controlled airspace designated for military airports typically talk to the tower of that airport? (USA)

The general point of this question is to understand how civilian aircraft operate around controlled airspace designated for military airports, in terms of communications, in the US. I think the best ...
0 votes
1 answer
96 views

What is the meaning of (HR) (LY) (FOR) in radio phraseology?

Need help! Can’f figure out what’s the meaning of (HR) (LY) (FOR) beside some words from this document: Source.
76 votes
4 answers
98k views

Why do English-speaking pilots and ATC say "Niner" instead of "Nine"?

Besides the fact that it's now a standard, why do American-English-speaking pilots and ATC say "Niner" instead of "Nine"? None of the other numerals are pronounced in an atypical fashion. For what ...
8 votes
2 answers
2k views

Mandatory Reports to ATC on an Approach

An instructor recently told me a required radio call to ATC is to tell them when you are established on course on final approach. His point was that this tells ATC when to switch you to tower. While I ...
21 votes
5 answers
3k views

Can the guard frequency be used by non-aircraft / general public?

I am part of an organisation which regularly flies high-powered rockets, and thus files a TFR when we do so prohibiting aircraft from the area where we launch these rockets up to 10,000 ft. This TFR ...
10 votes
3 answers
4k views

How does the emergency frequency work?

When I'm flying from my airfield, I usually am out of range of the airfield's radio within 50 miles or so, at low altitudes. How does the emergency frequency (121.50) work? Where is the location of ...
2 votes
1 answer
341 views

Can You Transmit with Airband Transceiver

I am considering the purchase of two Dittel FSG-5 Airband (118-137 Mhz) transceivers. If I transmit from one radio to the other, and vice versa, am I breaking any rules or potentially causing an issue ...
7 votes
2 answers
1k views

Are any Q-codes still used in aviation?

On amateur (ham) radio, we often use Q-codes, which are three-letter codes starting with the letter Q with various meanings. They were originally used to speed up Morse code communications; it might ...
3 votes
1 answer
123 views

Radiotelephony certificates in Germany: to get AZF do i need BZF first?

I've been asked by LBA (German Civil Aviation Authority) to acquire the general radio telephony certificate (AZF) in order to convert my FAA ATP to a German EASA ATPL. Can I get the AZF immediately or ...
3 votes
2 answers
572 views

Can a private pilot flying a passenger to a hospital use a MEDEVAC callsign?

Normal air ambulance flights in medical emergency situations use a callsign consisting of the word "MEDEVAC" followed by the registration number excluding the prefix (e.g. N912MF is "...
4 votes
1 answer
213 views

Bordering towered airspaces

I'm looking for guidance on radio communications when taking off from Delta airspace and flying into Charlie that starts where the Delta ends. My aircraft can only monitor one frequency at a time. Can ...
2 votes
2 answers
279 views

How does an ARTCC achieve radio coverage of its entire region?

I live close to the edge of the ARTCC region covering my area. There is no way I could talk on VHF to the control center at normal GA altitudes; it might be possible from airliner or bizjet cruise ...
4 votes
2 answers
360 views

Pilot communication with ATC partially unreadable

Can anybody decipher this pilot's landing request due to moderate turbulence (some unreadable words...). Thanks ! https://www.icloud.com/iclouddrive/03kDM9-xQ7Oyz3kUaeRJj6M5Q#AUDIO-2021-12-03-07-51-...
9 votes
1 answer
383 views

Did pilots use the radio in the Spanish Civil War?

Was radio communication used by fighter pilots during the Spanish Civil War? Fiat CR32, Messerschmitt Me 109 and Polikarpov I-16 were typical aircraft but I have no information about radio ...
19 votes
3 answers
5k views

Do pilots ever talk directly to each other over radio?

Do pilots ever talk directly to other pilots over air band radio, or only to air traffic control?
8 votes
2 answers
1k views

What licenses do I need to transmit on AirBand frequencies?

I am not a pilot, but at my company we are trying to figure out what FCC licenses we need to use to talk to our pilot when we are on the ground and they are flying. My research has led me to mixed ...
0 votes
3 answers
377 views

Can ATC tell someone to leave the airspace because they called them by the wrong name?

I will preface this question by saying that the story in question is anecdotal, told by an instructor at an airfield I was visiting. I will obfuscate the callsigns and airfield in question. Apparently,...
11 votes
2 answers
4k views

How can pilots get other pilots' attention without the use of radio

In this video, a pilot makes the embarrassing mistake of announcing the passengers on an active frequency. During the video, other pilots are apparently trying to get his attention by sending some ...
4 votes
1 answer
321 views

Is it possible to use Morse code for communication?

Let's say your radio fails, but luckily you brought your keychain Morse code transmitter as a backup! Is there any way to use it? ICAO defines Q-codes for aviation use. Q-codes were initially ...
3 votes
3 answers
635 views

When is the word "Over" required in radio transmissions?

From the AIM 4-2-3: The terms initial contact or initial callup means the first radio call you make to a given facility or the first call to a different controller or FSS specialist within a facility....
26 votes
3 answers
4k views

Are tower controllers trained on not overloading pilots with complex taxi instructions while landing?

The above question comes from the following observations: I've noticed over the years of flying (small GA aircraft) that some towers are talking more and more to me while landing. It used to be ...
6 votes
3 answers
8k views

How long before departure can an IFR clearance be copied?

When flying IFR under the FAA the departure procedure starts with copying an IFR clearance from ATC. My question is, how long before departure is it okay to go ahead and copy down the clearance? ...
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0 answers
122 views

What is the meaning of “next frequency” in PDC?

When we get pdc we see next frequency,For example 121.4 Sometimes it is the frequency of clearance,but sometimes is the frequency of departure. WHY?Which frequency should it be?
14 votes
5 answers
7k views

What is the difference between “affirm” and “acknowledged”?

Recently, I've watched Air Force One and I heard ATC and the pilots say "Acknowledged." instead of "affirm" or "affirmative" as I've learned.. Is it common to say both? ...
3 votes
0 answers
103 views

PTT mutes mic w/ A20, Delta Zulu, works with older headsets

New airplane to me. Coms work great using an older headset, David Clark or other brand. When using my Delta Zulu or Bose A20 the intercoms works fine until you press the PTT. When pressed the radio ...
2 votes
1 answer
337 views

Why from the SELCAL pool letters "I", " N", "O" are omitted?

Why from the SELCAL code pool, the letters "I", " N", "O" are omitted? Thanks in advance.
12 votes
1 answer
21k views

Why (and when) did people start meowing on guard frequency?

meow Some love it, some hate it, but we've all heard it - that's right, pilots meowing on guard frequency (121.5). When did it start? Does (or did) it represent something? Does ATC ever do it?
6 votes
3 answers
2k views

While flying, how do I contact someone who is on the ground?

As a regular General Aviation pilot, how do I contact or relay a simple message to someone on the ground? For example, to update a friend, family member, or taxi company with an ETA or a meeting point....
11 votes
10 answers
9k views

Best way of learning the aviation alphabet?

I want to learn the aviation alphabet, and when searching the Internet on how to, I see a plethora of approaches, so I thought of asking here! If it's primarily opinion based, let me know.
16 votes
2 answers
9k views

What is meant by "Fox Two"?

Numerous Movies, Video Games, and TV shows featuring fighter pilots depict the pilots calling out "Fox Two" on the radio as they fire a missile. The transmission (as depicted, I'm not sure ...
2 votes
2 answers
184 views

Who do you talk to in Class G airspace (UK)?

I'm currently in my early days of learning about aviation, and have just started learning how to use a VFR chart. One thing that I have noticed is that the class D airspaces generally have frequencies ...
1 vote
1 answer
133 views

In cases where it's legal, is it feasible to use a phone for a call in the normal way?

In a country that allows cell phone use on planes, or with VoIP using satellite Internet, how feasible is it to use a phone by the normal method of holding it to your face on a small GA plane such as ...
2 votes
5 answers
730 views

(In English) is there a way/shorthand to refer to the minutes part of a plane's landing time? (I.e. omitting the hour)

For example, if a plane lands at 17:34, is it possible (in English) to only report the minutes (34) portion of the time? If so, how? The reason/context for the question: I'm trying to translate ...
15 votes
3 answers
20k views

How should a pilot respond verbally to being cleared for takeoff?

When ATC says "cleared for takeoff", what's the correct answer from the pilot?

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