Legally, for air-to-air communications between private, fixed-wing aircraft, there is just one authorized frequency: 122.75 MHz. For general aviation helicopters: 123.025 MHz.
What frequency do airplanes use?
In the US the civil aircraft communications band (118-137 MHz) generally uses 25 kHz spaced channels. As of 2010 aeronautical enroute and flight test stations may use 8.33 kHz spaced channels in the 121.4-123.6, 128.825-132.0 and 136.5-136.875 MHz ranges.
What is the best frequency to listen to aircraft?
Very High Frequency (VHF)
To support full VHF communications, the FAA recommends that all aircraft with older 360-channel systems should be retrofitted with a 760-channel piece of equipment with 25 kHz channel spacing which is capable of operating in the 118.000 to 136.975 MHz band.
What is the air-to-air frequency?
However, the frequency 123.45 MHz is designated as an air-to-air VHF communications frequency to enable aircraft engaged in flights over remote and oceanic areas out of range of VHF ground stations to exchange necessary operational information and to facilitate the resolution of operational problems.
Are aviation frequencies AM or FM?
Aviation voice radios use VHF AM. AM is used so that multiple stations on the same channel can be received. (Use of FM would result in stronger stations blocking out reception of weaker stations due to FM’s capture effect).
How do I listen to airport frequencies?
If you’ve got nothing better to do on one night, visit LiveATC.net, where anyone with a computer or smartphone and a passing interest in aviation can listen to control towers live, worldwide, and in full action. Student pilots use it to listen to their local airport to get accustomed to the myriad radio calls required.
Is listening to air traffic control illegal?
You can listen to air traffic control radio transmissions
It is illegal under the Wireless Telegraphy Act 1949 2006 to listen to anything other than general reception transmissions unless you are either a licensed user of the frequencies in question or have been specifically authorised to do so by a designated person.
Is 121.5 still monitored?
DOES ANYONE STILL MONITOR 121.5 MHZ ELTS? Even though satellites no longer monitor 121.5 MHz signals, the search and rescue community will still respond when notified through other means. ELTs were originally intended to use 121.5 MHz to inform air traffic control and pilots monitoring the frequency of an emergency.
What radio frequency does the military use?
The primary communications mode is narrowband FM, but some AM is used by air units of the various services for tactical air-to-air comms. The military has a BIG (175 MHz) military aircraft band in the 225-400 MHz range.
What frequency do helicopters use?
Use of air to air frequencies for aircraft and helicopters. In the FCC rules 47 CFR 87.187(j) it states: The frequency 122.750 MHz is authorized for use by private fixed wing aircraft for air-air communications. The frequency 123.025 MHz is authorized for use by helicopters for air-air communications.
What frequency do humans vibrate at?
The important parts of the human body vibration frequency are generally located in about 3 Hz–17 Hz. According to the International Standard ISO 2631 in the vertical vibration of the human body, the sensitive range is located in 6 Hz–8 Hz.
What is a talk around frequency?
Talk around means that you are not going through the repeater. The most common way to do this is to program a channel with transmit and receive on the repeater output frequency. This way the mobile or portable does not transmit on the input to the repeater thus they are talking around the repeater.
Is formation flying legal?
FAR §91.111, which governs operations near other airplanes, states that: “No person may operate an aircraft in formation flight except by arrangement with the pilot in command of each aircraft in the formation.” This minimum legal requirement for formation flight should be obvious, but apparently pilots have been …
Why is AM radio dead?
AM is dying for a lack of listeners. Only 10 to 20 % of all radio listeners listen to it, and that depends upon the locale. … Then there is digital radio, although this is not a popular option. The U.S. version (called HD Radio) is available on both the AM and FM bands, but few receive it.
How are ATC frequencies calculated?
Type in your departure airport into Skyvector. In the upper left-hand corner, you will see the Airport/Facility Directory. In the Airport/Facility Directory, you will see the controlling center’s frequency. That’s the frequency you will use to pick up VFR flight following.
Are aircraft radios VHF or UHF?
The UHF air band operates in AM in a general range of 225.0–399.95 MHz. Many ATC functions have both VHF and UHF frequencies. For example, Newark Liberty Tower uses 118.3 and 257.6. ATC will often broadcast on both the VHF and UHF frequencies.