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Questions tagged [radio]

Radio equipment, including antennas, receivers, two-way radio systems, and more.

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15 votes
2 answers
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What radio frequency bands are associated with the long wire antennas, why do some aircraft have them and others don't?

On many older aircraft, and in vintage aircraft photos, you can often see long wire antennas strung from some point on the top of the fuselage to the top front of the vertical fin. On newer aircraft, ...
Anthony X's user avatar
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17 votes
1 answer
14k views

What is the night effect?

I read the night effect takes place in radio navigation, especially VOR and NDB. My questions are: What is its nature? Why does it occur? What are the consequences of it?
wiaim's user avatar
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7 votes
3 answers
11k views

How many antennae are there on a typical small aircraft, and how are they connected to the avionics?

As far as i know there are a bunch of antennas on board of a small (EASA CS-23) plane: GPS is for GPS navigation in MHz VHFVOR is for NAV and Glideslope/Localizer ADF is for ADF DME is for DME ...
MightyMirko's user avatar
34 votes
5 answers
24k views

Why is the quality of radio communication bad?

Why don't modern planes and ATC centers have good-quality audio for communication? For example in this video: Or basically any other example of pilot communication(...
ScienceSamovar's user avatar
8 votes
3 answers
4k views

What radios are airliners / large aircraft equipped with?

I know that pilots have to talk to the tower over the radio, and apparently you have to tune the radio to the right tower frequency. I've also heard that in an emergency, you're supposed to "squawk ...
raptortech97's user avatar
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15 votes
3 answers
6k views

Why shouldn't you use HF radio while refueling?

FCOM limitations for many aircraft state: DO NOT USE HF RADIO WHILE REFUELING Why is this? I have heard from people that it's because most of the big airliners have a 'notch' antenna for HF; it's ...
Praveen Pillai's user avatar
12 votes
4 answers
11k 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 ...
user avatar
9 votes
1 answer
14k views

What's the meaning of underlined frequency in sectional chart nav aid box?

There is a statement to describe the underlined frequency in legend, it says: Underline indicates no voice on this frequency. What does this mean? We still need to ident the Morse code, doesn't it?...
JuanLoveJesus's user avatar
7 votes
3 answers
2k 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
Nicholas Smith's user avatar
6 votes
1 answer
2k views

Is there anything better than LiveATC to get accustomed with RT phraseology?

I would like to "train my ear" for RT communications and I tried to listen to approach of Dublin's Airport. I simply can't understand more than 50% words because of loud background whistle and poor (...
super jet 100's user avatar
5 votes
2 answers
2k views

What was the range of a low-frequency radio range station?

The low-frequency radio range is a historic navigation aid that was in use from the 20's to the 70's. I find it quite interesting. Using AM frequencies, what was the range of a high power LFR station?...
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4 votes
2 answers
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 ...
Mark's user avatar
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15 votes
5 answers
13k views

Can I fly with an airband receiver in the United States?

I'm flying with American Airlines on a cross-country flight soon and was thinking about bringing along my airband receiver/scanner since it'd be fun to listen to ATC. It looks like I'd be unable to ...
Jeff B's user avatar
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8 votes
2 answers
3k views

Which FCC license do I need to operate an aviation radio on the ground?

I'm in the process of buying a handheld radio as a backup for when I go flying. According to the owner's manual, I'd need a ground station license to operate it when I'm not actually in an airplane, ...
HiddenWindshield's user avatar
8 votes
6 answers
3k views

Is there a solution to radio interference?

I was reading about the Tenerife Disaster and came across what seemed to be the probable cause behind the accident. A simultaneous radio call from the Pan Am crew caused mutual interference on the ...
Prodnegel's user avatar
  • 898
5 votes
2 answers
10k views

How does the PTT button on the radio work?

I've always seen a button either built into the yoke or attached to the yoke with velcro on older aircraft. However, the other day my instructor used an older-looking headset that had a push to talk ...
Pugz's user avatar
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5 votes
3 answers
2k views

Exactly what kind of radios are prohibited for passengers inside an aircraft?

I know that passengers are asked to put their cell phones on flight mode. But some carriers allow use of WLAN on-board. So, what radios should passengers refrain from using? Also, if a person uses a ...
pri's user avatar
  • 155
0 votes
2 answers
1k views

Carrier frequency and transmit power of a commercial aircraft

I have a few questions on the radio comms. aspects of commercial aircrafts. At what (central) frequency does an aircraft communicate with a control tower? Is the communication over one frequency only?...
Teodorism's user avatar
  • 455