Shortwave radio is radio transmission using radio frequencies in the shortwave bands (SW). There is no official definition of the band range, but it always includes all of the high frequency band (HF), which extends from 3 to 30 MHz ; above the medium frequency band (MF), to the bottom of the VHF band.
Very high frequency (VHF) is the ITU designation for the range of radio frequency electromagnetic waves from 30 to 300 megahertz (MHz), with corresponding wavelengths of ten meters to one meter. Frequencies immediately below VHF are denoted high frequency (HF), and the next higher frequencies are known as ultra high frequency (UHF).
In radio communication, skywave or skip refers to the propagation of radio waves reflected or refracted back toward Earth from the ionosphere, an electrically charged layer of the upper atmosphere. Since it is not limited by the curvature of the Earth, skywave propagation can be used to communicate beyond the horizon, at intercontinental distances. It is mostly used in the shortwave frequency bands.
It is generally recognized that the first radio transmission was made from a temporary station set up by Guglielmo Marconi in 1895 on the Isle of Wight. This followed on from pioneering work in the field by a number of people including Alessandro Volta, André-Marie Ampère, Georg Ohm, James Clerk Maxwell and Heinrich Rudolf Hertz.
The Wireless Institute of Australia (WIA) was formed in 1910, and is the first and oldest national amateur radio society in the world. It represents the amateur radio operators of Australia as the AR "peak body" in dealings with the Australian Communications and Media Authority (ACMA), the authority under the government of Australia that administers communications within and external to Australia. The WIA publishes a bi-monthly journal for its membership called Amateur Radio. The organisation is the national society representing Australia in the International Amateur Radio Union. The WIA holds regular meetings with the ACMA to inform the Authority on matters concerning the Australian amateur radio community.
2UE is an all-music radio station in Sydney owned by Nine Entertainment Co and run under a lease agreement by Ace Radio. It currently broadcasts from its studios in Pyrmont, New South Wales.
CFRC-FM is the non-commercial campus radio station at Queen's University in Kingston, Ontario, Canada. The station has one of the longest radio histories in Canada, with experimental broadcasts dating back to 1922 and serves Queen's University students and faculty as well as the greater Kingston community. CFRC-FM is also a member of the National Campus and Community Radio Association.
ABC Radio Perth is the on-air identifier of a radio station located in Perth, Western Australia, operated by the Australian Broadcasting Corporation, and broadcasting at 720 kHz AM. It is the flagship ABC Local Radio station in Western Australia. The station was established under the Sealed Set scheme by Westralian Farmers in 1924, sold to the Commonwealth Government in 1928 and provided with programmes by the Australian Broadcasting Company, became part of the Australian Broadcasting Commission in 1932, which became the Australian Broadcasting Corporation in 1983.
Amateur radio frequency allocation is done by national telecommunication authorities. Globally, the International Telecommunication Union (ITU) oversees how much radio spectrum is set aside for amateur radio transmissions. Individual amateur stations are free to use any frequency within authorized frequency ranges; authorized bands may vary by the class of the station license.
Apex radio stations was the name commonly given to a short-lived group of United States broadcasting stations, which were used to evaluate transmitting on frequencies that were much higher than the ones used by standard amplitude modulation (AM) and shortwave stations. Their name came from the tall height of their transmitter antennas, which were needed because coverage was primarily limited to local line-of-sight distances. These stations were assigned to what at the time were described as "ultra-high shortwave" frequencies, between roughly 25 and 44 MHz. They employed amplitude modulation (AM) transmissions, although in most cases using a wider bandwidth than standard broadcast band AM stations, in order to provide high fidelity sound with less static and distortion.
The timeline of radio lists within the history of radio, the technology and events that produced instruments that use radio waves and activities that people undertook. Later, the history is dominated by programming and contents, which is closer to general history.
KLZ is a commercial radio station licensed to Denver, Colorado. It airs a conservative talk radio format and is owned by Crawford Broadcasting, with studios on South Parker Road in Aurora. It is the oldest radio station in the state of Colorado, and one of the oldest in the United States.
Donald Charles Boulton Maclurcan was an Australian architect. As a senior partner of Fowell, Mansfield & Maclurcan, he designed or directed the design of a wide range of building types, from individual houses to important infrastructure projects.
The history of broadcasting in Australia has been shaped for over a century by the problem of communication across long distances, coupled with a strong base in a wealthy society with a deep taste for aural communications in a silent landscape. Australia developed its own system, through its own engineers, manufacturers, retailers, newspapers, entertainment services, and news agencies. The government set up the first radio system, and business interests marginalized the hobbyists and amateurs. The Labor Party was especially interested in radio because it allowed them to bypass the newspapers, which were mostly controlled by the opposition. Both parties agreed on the need for a national system, and in 1932 set up the Australian Broadcasting Commission, as a government agency that was largely separate from political interference.
Australasian Wireless relates to two separate entities: Australasian Wireless Limited and Australasian Wireless Company Limited. The former obtained an option to acquire the exclusive rights to the Telefunken wireless telegraphy system in Australasia, the latter acquired those rights and with public capital developed a firm which was successful in supplying wireless telegraphy equipment to shipping in Australasian waters and the establishment of Australia's first coastal radio stations. When the Australian Government decided to complete the remainder of the coastal network using the Balsillie wireless system manufactured by Father Archibald Shaw, AWCL merged with Marconi interests to form Amalgamated Wireless (Australasia). This merged firm eventually won the exclusive right to operate Australia's coastal radio network and went on to become the dominant company in Australia's radiocommunications and broadcasting industry.
Hannah Maclurcan was a cook and hotelier in Australia. She was the author of the very popular cookbook "Mrs. Maclurcan's cookery book : a collection of practical recipes specially suitable for Australia". She is also known as Hannah Maclurcan Lee.
The 5-meter band (60 MHz) is the middle portion of the very high frequency (VHF) radio spectrum allocated to amateur radio use.
