Class A may refer to:
Communications technology
*
Class-A amplifier
In electronics, power amplifier classes are letter symbols applied to different Amplifier#Power_amplifiers, power amplifier types. The class gives a broad indication of an amplifier's Electrical efficiency, efficiency, linearity and other character ...
, a category of electronic amplifier
*
Class A network, in Internet technology, a type of large network
*
Class A television service
The class A television service is a system for regulating some low-power television ( LPTV) stations in the United States. Class A stations are denoted by the broadcast callsign suffix "-CA" (analog) or "-CD" (digital), although very many analog ...
, a system for regulating low power stations in the United States
Sports
*
Class A (baseball)
Single-A, formerly known as Class A and sometimes as Low-A, is the fourth-highest level of play in Minor League Baseball in the United States, below Triple-A (baseball), Triple-A, Double-A (baseball), Double-A, and High-A. There are 30 teams cl ...
, a level of American Minor League Baseball
*
Class A (classification), a Paralympic wheelchair fencing classification
Transportation
*
Class A airfield
Class A airfields were World War II (WW2) military installations constructed to specifications laid down by the United Kingdom, British Air Ministry Directorate General of Works (AMDGW). Intended for use by heavy bombers and Military transport ...
, a type of World War II British military installation
*
Class A surface
In automotive design, a class A surface is a freeform surface of high efficiency and quality, in terms of aesthetical reflectivity. Strictly, class A surfaces have curvature and tangency alignment. However, many people interpret class A surface ...
, in automotive design
*
Milwaukee Road class A
The Milwaukee Road Class "A" was a class of high-speed, streamlined "Atlantic" type steam locomotives built by the American Locomotive Company (ALCO) from 1935 to 1937 to haul the Milwaukee Road's ''Hiawatha'' express passenger trains. Numbered f ...
, a class of steam locomotives
*
Norfolk and Western Railway class A, a class of steam locomotives
* Class A, a type of commercial
driver's license in the United States
In the United States, driver's licenses are issued by each individual state, territory, and the District of Columbia (a practical aspect of federalism). Drivers are normally required to obtain a license from their state of residence. All states ...
* Class A, an ICAO
airspace class
Airspace class is a category used to divide the sky into different zones, defined by both geographical boundaries and altitude levels. The International Civil Aviation Organization (ICAO) provides standardized airspace classifications that most co ...
* Class A, a type of
motorhome
A motorhome (or coach) is a type of self-propelled recreational vehicle (RV) which is as the name suggests, like a home on wheels.
Features
Motorhomes usually have sleeping spaces for two to eight people. Each sleeping space is either fixed o ...
Other uses
*
''Class A'' (novel), a 2004 ''CHERUB'' novel by Robert Muchamore
*
Class A drug
The Misuse of Drugs Act 1971 (c. 38) is an act of the Parliament of the United Kingdom. It represents action in line with treaty commitments under the Single Convention on Narcotic Drugs, the Convention on Psychotropic Substances, and the ...
, a classification of drugs controlled by the UK Misuse of Drugs Act
*
Class A office space
An office is a space where the employees of an organization perform administrative work in order to support and realize the various goals of the organization. The word "office" may also denote a position within an organization with specific dut ...
, a Building Owners and Managers Association category
*
Library of Congress Classification:Class A -- General Works
* Class A, a
stellar classification
In astronomy, stellar classification is the classification of stars based on their stellar spectrum, spectral characteristics. Electromagnetic radiation from the star is analyzed by splitting it with a Prism (optics), prism or diffraction gratin ...
* Class A, a retired type of United States
Army Service Uniform
The Army Service Uniform (ASU) is a military uniform for wear by United States Army personnel in garrison posts and at most public functions where the Army Combat Uniform is inappropriate. As of 2021, the Army has two service uniforms for use by ...
* Class A foams, a type of
foam used in firefighting
See also
*
A class (disambiguation)
A class or A-class may refer to:
Locomotives
* CIÉ A class or CIÉ 001 Class, a 1955 class of Co-Co diesel locomotives used by Córas Iompair Éireann (The Irish Transport Company)
* NZR A class (1873), a class of steam tank locomotives operat ...
*
Class B (disambiguation) Class B may refer to:
* Class B (baseball), a defunct class in minor league baseball in North America
* Class B (classification), a Paralympic wheelchair fencing classification
* Class B drug, in British law
* Class B share, a “class” of commo ...
{{disambiguation