usage of the radio spectrum

См. также в других словарях:

• Radio — is the transmission of signals, by modulation of electromagnetic waves with frequencies below those of visible light.Electromagnetic radiation travels by means of oscillating electromagnetic fields that pass through the air and the vacuum of… …   Wikipedia

• CB usage in the United States — Main article: Citizens band radio In the United States, the Citizens Radio Service, or Citizens Band (CB), is one of several personal radio services defined by the FCC s Part 95 rules. It is intended to be a two way voice communication service… …   Wikipedia

• Spectrum management — The spectrum is a conceptual tool used to organize and map the physical phenomena of electromagnetic waves. These waves propagate through space at different frequencies, and the set of all possible frequencies is called the electromagnetic… …   Wikipedia

• Radio-frequency identification — (RFID) is a technology that uses radio waves to transfer data from an electronic tag, called RFID tag or label, attached to an object, through a reader for the purpose of identifying and tracking the object. Some RFID tags can be read from… …   Wikipedia

• Radio-controlled model — A radio controlled model (or RC model) is a model that is steerable with the use of radio control. All types of vehicles imaginable have had RC systems installed in them, including cars, boats, planes, and even helicopters and scale railway… …   Wikipedia

• Radio Society of Great Britain — infobox Organization name = Radio Society of Great Britain image border = size = 63px caption = msize = 200px mcaption = Lambda House, the RSGB headquarters in Potters Bar prior to their move to Bedford in April 2008 abbreviation = RSGB motto =… …   Wikipedia

• Policies promoting wireless broadband in the United States — Policies promoting wireless broadband are policies, rules, and regulations supporting the National Wireless Initiative , a plan to bring wireless broadband Internet access to 98% of Americans.[1] Spectrum is limited and much of it already in use …   Wikipedia

• National broadband plans from around the world — Broadband is a term normally considered to be synonymous with a high speed connection to the internet. The term itself is technology neutral; broadband can be delived by a range of technologies including DSL, LTE or next generation access. This… …   Wikipedia

• Shortwave radio — Shortwave can also refer to a shortwave trough meteorology. A solid state, analog shortwave receiver Shortwave radio refers to the upper MF (medium frequency) and all of the HF (high frequency) portion of the radio spectrum, between… …   Wikipedia

• Radio-controlled aircraft — A radio controlled aircraft (often called RC aircraft or RC plane) is a model aircraft that is controlled remotely, typically with a hand held transmitter and a receiver within the craft. The receiver controls the corresponding servos that move… …   Wikipedia

• List of ZX Spectrum clones — The following is a list of clones of Sinclair Research s ZX Spectrum home computer: Contents 1 Official clones 1.1 Timex Sinclair 2068 1.2 Timex Computer 2048 1.3 Timex Sincl …   Wikipedia