Which frequency band is used for ground to air?
Spectrum Engineering & Policy – Radio Frequency Bands Supporting Aviation
|112 – 118 MHz||VOR; SCAT-I Radionavigation data link|
|118 – 137 MHz||VHF Air / Ground Communications|
|138 – 150.8 & 162 – 174 MHz||Fixed, Mobil|
|225 – 328.6 & 335.4 – 400 MHz||UHF Air / Ground Communications (U.S. Military)|
What is the air Ground communication method?
“The passage of voice and/or data between an aircraft and a ground station such as air traffic control or aircraft operating agency.” ICAO Annex 10 – Aeronautical Communications defines air ground communication as “Two-way communication between aircraft and stations or locations on the surface of the earth.”
How far can aircraft VHF transmit?
VHF communication systems are the most widely used for maintaining contact between ground and aircraft. This employs “Line Of Sight” transmission, which translates to a range of about thirty miles for an aircraft operating at 1,000 feet above the ground, or about 135 miles with an aircraft operating at 10,000 feet.
How do planes communicate with ground stations?
Voice/audio communications between an aircraft and the ground are traditionally accomplished using radio telephony, broadcasting and receiving on: UHF. VHF. HF.
How do you talk to ground control?
How To Talk To Air Traffic Control | ATC Radio Basics for Pilots
Can you listen to ATC on a radio?
To listen to your local air traffic control, you’ll need to obtain a radio scanner that’s capable of receiving frequencies between 118.0 and 136.975 MHz. Then, go on sites like skyvector.com to find an aeronautical sectional chart of your local area.
Why VHF is used in aviation?
VHF radio is used by aircraft to communicate with ground controllers, ask advice on other aircraft in the area at similar altitudes and declare various types of emergencies.
Can I fly with a VHF radio?
All types of radio devices are allowed on airplanes in the United States including handheld FM Radios, VHF, HAM, and marine radios both in carry-on and checked luggage. But, the use of radios is restricted on planes due to the possibility of interference with the plane’s systems.
How far can a pilot see at 35000 feet?
At 35,000 Feet: You can see 228 miles from a height of 35,000 feet. At 40,000 Feet: You can see 244 miles from a height of 40,000 feet.
What does a pilot say before take off?
“Let’s kick the tires and light the fires”
Famously uttered by Harry Connick Jr. in Independence Day, the military phrase signals that a plane is just about ready for takeoff, says Mark Baker, a commercial pilot of 35 years and current president of the Aircraft Owners and Pilots Association (AOPA).
What do pilots say when landing?
To indicate the landing clearance or final approach, the Captain will either make the following announcement and/or blink the No Smoking sign. “Flight attendants, prepare for landing please.” “Cabin crew, please take your seats for landing.” It may be followed by an announcement by a flight attendant.
Can you listen to military aircraft frequencies?
Even if you don’t live near a military base you should still be able to hear some communications in this band. Unlike the civilian aircraft band (108-137 MHz), communications in the military aircraft band are far more elusive.
Is LiveATC legal?
13.4 The LiveATC.net Services are owned or licensed by LiveATC.net and are protected by United States copyright laws and international treaty provisions.
What is the primary disadvantage of VHF communications?
VHF, since it tends to bend with the curvature of the earth more than UHF, is ideal for outdoor applications where distance is the primary user need. However, a big disadvantage of VHF is that it does not work well indoors as it will not penetrate walls or reinforced concrete as well as UHF.
What is VHF stand for?
very high frequency
VHF, in full very high frequency, conventionally defined portion of the electromagnetic spectrum including any radiation with a wavelength between 1 and 10 metres and a frequency between 300 and 30 megahertz. VHF signals are widely employed for television and radio transmissions.
Are aircraft radios VHF or UHF?
If you are into aviation, you probably already know how important it is to have a radio while in the air. Air Band radios use VHF frequencies in the 108 MHz – 137 MHz range.
Can planes fly at 50000 feet?
The highest that a commercial airplane can fly is 45,000 feet. Most military planes fly at around 50,000 feet and sometimes higher. Some rocket-powered planes can fly as high as 100,000 feet but they are specially designed for this purpose.
How cold is it at 40000 feet?
around -70 degrees Fahrenheit
After all, commercial airplanes can cruise at an altitude of nearly 40,000 feet, where temperatures hover around -70 degrees Fahrenheit.
Why do pilots say Niner?
Aviators often speak “pilot English” to avoid miscommunications over radio transmission. “Tree” for instance, means three, “fife” is the number five and “niner” means nine, says Tom Zecha, a manager at AOPA. The variations stemmed from a desire to avoid confusion between similar-sounding numbers, he says.
Why do pilots say blue?
The callout from the pilots like “LOC blue” serves to remind themselves of the current flight guidance modes, and to maintain awareness of mode changes. This is also to ensure that their mental idea of “what the aircraft will do next” is up to date and fits to the current flight situation.
Does military use UHF or VHF?
RE: Why Do Military Aircraft Use UHF And Not VHF? #10936127. The military aircraft radio spectrum, 225-400MHz (which is AM ), actually straddles the boundary between VHF and UHF . There are only modest differences in propagation properties between that and the 118–132MHz band used for civilian aviation.
What frequency do the Blue Angels use?
U.S.N. BLUE ANGELS:
|nbfm rpt.||142.025 in/out 142.625|
|Air to Air||241.40 250.80 251.60 275.35 360.40 384.40 395.90 391.90|
Is listening to ATC is illegal?
What is this? The rules forbidding people to listen to ATC seem to be a very gray area that is mostly overlooked in those countries. For the U.S. however, there is no problem listening to or recording and retransmitting air traffic control communications.
Can the public listen to air traffic control?
Air traffic control (ATC) is responsible for providing crucial information to pilots around busy airports. They communicate with pilots on designated radio frequencies to keep airport operations running smoothly and safely. Their communication is also accessible to the public.
Which is stronger VHF or UHF?
VHF frequencies can penetrate objects better than UHF. VHF can also travel farther. If a VHF wave and a UHF wave were transmitted over an area without barriers, the VHF wave would travel almost twice as far.