Knockout Cup (sometimes referred to as the KO Cup ) is a British motorcycle speedway competition run annually since 1929. [1] Each division has its own respective Knockout Cup. The current Knockout Cup competitions are the Premiership Knockout Cup (tier one), the Championship Knockout Cup (tier two) and the National League Knockout Cup (tier three). [2] The cups have been run in the past under the associated name of the League. For example Elite League Knockout Cup when tier one was the Elite League, a Premier League Knockout Cup when tier two was the Premier League and so on. Contents 1 Knockout Cups (chronological order) 1.1 Tier One 1.2 Tier Two 1.3 Tier Three 2 List of Winners 3 References Knockout Cups (chronological order) Tier One National Trophy 1931-1964 (all divisions) British League Knockout Cup 1965-1967 British League Division One Knockout Cup 1968-1974 British League Knockout Cup 1975-1994 Premier League Knockout ...
"AM Radio" redirects here. For the song by Everclear, see AM Radio (song). For the American musical group, see AM Radio (band). AM broadcasting is a radio broadcasting technology, which employs amplitude modulation (AM) transmissions. It was the first method developed for making audio radio transmissions, and is still used worldwide, primarily for medium wave (also known as "AM band") transmissions, but also on the longwave and shortwave radio bands. The earliest experimental AM transmissions were begun in the early 1900s. However, widespread AM broadcasting was not established until the 1920s, following the development of vacuum tube receivers and transmitters. AM radio remained the dominant method of broadcasting for the next 30 years, a period called the "Golden Age of Radio", until television broadcasting became widespread in the 1950s and received most of the programming previously carried by radio. Subsequently, AM radio's audiences have a...