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).
Ultra high frequency (UHF) is the ITU designation for radio frequencies in the range between 300 megahertz (MHz) and 3 gigahertz (GHz), also known as the decimetre band as the wavelengths range from one meter to one tenth of a meter. Radio waves with frequencies above the UHF band fall into the super-high frequency (SHF) or microwave frequency range. Lower frequency signals fall into the VHF or lower bands. UHF radio waves propagate mainly by line of sight; they are blocked by hills and large buildings although the transmission through building walls is strong enough for indoor reception. They are used for television broadcasting, cell phones, satellite communication including GPS, personal radio services including Wi-Fi and Bluetooth, walkie-talkies, cordless phones, and numerous other applications.
George Harold Brown was an American research engineer. He was a prolific inventor who held more than 80 patents and wrote over 100 technical papers.
Directions: The Plans Video Album is a video album from Death Cab for Cutie, corresponding to their major-label debut album Plans. It was released on April 11, 2006 on Atlantic Records/Warner Music Group. Conceptualized by executive producers Aaron Stewart-Ahn and the band's bass player Nick Harmer proposals from around the world were submitted to Death Cab for Cutie, and a budget was allowed for 12 finalists to create videos that would translate their visions of every song from Plans. Directions also includes an interview with the band, directors' statements, treatments and profiles, animatics, and artwork, along with two bonus videos, "Jealousy Rides with Me" and "Talking Like Turnstiles".
A Gizmotchy is an antenna developed in the early 1960s for citizens band radio by the Utica Radio Corporation. In the mid-1960s the patent was acquired by the Charles Radio Company and the antenna is now marketed as the Charles Gizmotchy.
"Say Goodbye to Hollywood" is a song written and performed by Billy Joel, first released in 1976 on his album Turnstiles. It was originally released as a single with "Stop in Nevada" as a B-side. However, the song achieved greater recognition in 1981 when a live version from Songs in the Attic was released as a single, with the live version of "Summer, Highland Falls" as a B-side. Joel wrote the song after moving back to New York City in 1975; he had previously relocated to Los Angeles in 1972 in an attempt to get out of an onerous record deal.
The Billy Joel Band is the band that backs singer-songwriter and pianist Billy Joel on both studio and live recordings. The band stabilized around 1975 but underwent several lineup changes in the late 1980s and early 1990s. Joel's touring band as a whole did not begin playing on his records until he recorded the album Turnstiles in 1976. This line-up included Richie Cannata on saxophones and organ, Liberty DeVitto on drums, Russell Javors on guitar, and Doug Stegmeyer on bass.
In logic, the symbol ⊨, ⊧ or is called the double turnstile. It is often read as "entails", "models", "is a semanticconsequence of" or "is stronger than". It is closely related to the turnstile symbol , which has a single bar across the middle, and which denotes syntactic consequence.
Douglas Alan Stegmeyer was an American musician who was best known as the bassist and back-up vocalist for Billy Joel. Stegmeyer also performed as bassist for Debbie Gibson and Hall & Oates.
A batwing or super turnstile antenna is a type of broadcasting antenna used at VHF and UHF frequencies, named for its distinctive shape which resembles a bat wing or bow tie. Stacked arrays of batwing antennas are used as television broadcasting antennas due to their omnidirectional characteristics. Batwing antennas generate a horizontally polarized signal. The advantage of the "batwing" design for television broadcasting is that it has a wide bandwidth. It was the first widely used television broadcasting antenna.
An antenna array is a set of multiple connected antennas which work together as a single antenna, to transmit or receive radio waves. The individual antennas are usually connected to a single receiver or transmitter by feedlines that feed the power to the elements in a specific phase relationship. The radio waves radiated by each individual antenna combine and superpose, adding together to enhance the power radiated in desired directions, and cancelling to reduce the power radiated in other directions. Similarly, when used for receiving, the separate radio frequency currents from the individual antennas combine in the receiver with the correct phase relationship to enhance signals received from the desired directions and cancel signals from undesired directions. More sophisticated array antennas may have multiple transmitter or receiver modules, each connected to a separate antenna element or group of elements.
Antennas to Hell is the first greatest hits compilation album by American heavy metal band Slipknot. The album was released on July 23, 2012, in the United Kingdom and July 24, 2012, in the United States by Roadrunner Records. The title is a reference to the critically acclaimed post-rock album Lift Your Skinny Fists Like Antennas to Heaven, released by the band Godspeed You! Black Emperor in 2000. The album features hit singles, fan favorites, and live tracks. The two-disc version of Antennas to Hell features a bonus live CD capturing Slipknot's performance at the 2009 Download Festival in Donington Park, England. The three-disc version includes a bonus DVD featuring every Slipknot music video and ten brand new video features, titled "Broadcasts from Hell", created by Shawn Crahan. It is the first album released by the band since late bassist Paul Gray's death in 2010. Despite being a greatest hits collection, Clown of Slipknot has stated that it's more of a tribute to what Slipknot were and used to be at the time of the songs, and also said that the collection comes with lots of artwork and DVD content.
Turnstile is an American hardcore punk band from Baltimore, Maryland, formed in 2010. They have released 3 EPs and two studio albums.
Nonstop Feeling is the debut album by American hardcore punk band Turnstile. It was released on January 13, 2015 through Reaper Records. The album was reissued on 12" vinyl on September 23, 2016 through Roadrunner Records when the band signed to the label.
Explorer 38 was the first satellite to study radioastronomy. Explorer 38 was launched as part of the Explorers program, being the first of the 2 satellites RAE. Explorer 38 was launched on 4 July 1968 from Vandenberg Air Force Base, California, United States, with a Delta J rocket.
