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Channel 37 is an intentionally unused ultra-high frequency (UHF) television broadcasting channel by countries in most of ITU region 2 such as the United States, Canada, Mexico and Brazil. The frequency range allocated to this channel is important for radio astronomy , so all broadcasting is prohibited within a window of frequencies centred ...
World map showing the areas of Earth receiving daylight around 13:00 UTC in April. Daylight is the combination of all direct and indirect sunlight during the daytime.This includes direct sunlight, diffuse sky radiation, and (often) both of these reflected by Earth and terrestrial objects, like landforms and buildings.
FM channel 200, 87.9 MHz, overlaps TV 6. This is used only by K200AA.; TV 6 analog audio can be heard on FM 87.75 on most broadcast radio receivers as well as on a European TV tuned to channel E4A or channel IC, but at lower volume than wideband FM broadcast stations, because of the lower deviation.
An HD feed of the channel was launched in 2004, with the name of Outdoor Channel 2 HD; it used to broadcast different programming in contrast with the SD channel, until it turned into a simulcast feed and rebranded simply to "Outdoor Channel HD". It currently broadcasts at 1080i and it is carried by most subscription providers. It was the first ...
The frequency drifts from higher to lower values because it depends on the electron density, and the shock propagates outward away from the Sun through lower and lower densities. By using a model for the Sun's atmospheric density, the frequency drift rate can then be used to estimate the speed of the shock wave.
A clear-channel station is a North American AM radio station that has the highest level of protection from interference from other stations, particularly from nighttime skywave signals. This classification exists to ensure the viability of cross-country or cross-continent radio service enforced through a series of treaties and statutory laws.
The final was "NASA TV UHD", an experimental ultra-high-definition television channel created through a Space Act Agreement with Harmonic Inc., featuring content from NASA's archives that takes advantage of the large format, with a musical audio track. [7] [8] A high definition simulcast feed of the "Public Channel" was launched on July 19 ...
National Geographic (formerly National Geographic Channel; abbreviated and trademarked as Nat Geo or Nat Geo TV) is an American pay television network and flagship channel owned by the National Geographic Global Networks unit of Disney Entertainment and National Geographic Partners, a joint venture between The Walt Disney Company (73%) and the National Geographic Society (27%), [2] [3] with ...