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Low-power Television Stations In Colorado
Low power may refer to: * Radio transmitters that send out relatively little power: ** QRP operation, using "the minimum power necessary to carry out the desired communications", in amateur radio. ** Cognitive radio transceivers typically automatically reduce the transmitted power to much less than the power required for reliable one-way broadcasts. ** Low-power broadcasting Low-power broadcasting is broadcasting by a broadcast station at a low transmitter power output to a smaller service area than "full power" stations within the same region. It is often distinguished from "micropower broadcasting" (more commonly " ... that the power of the broadcast is less, i.e. the radio waves are not intended to travel as far as from typical transmitters. ** Low-power communication device, a radio transmitter used in low-power broadcasting. * Low-power electronics, the consumption of electric power is deliberately low, e.g. notebook processors. * Power (statistics), in which low power is d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
QRP Operation
In amateur radio, QRP operation refers to transmitting at reduced power while attempting to maximize one's effective range. QRP operation is a specialized pursuit within the hobby that was first popularized in the early 1920s. QRP operators generally limit their transmitted RF output power to 5 Watts or less regardless of mode be it CW operation or SSB operation. Reliable two-way communication at such low power levels can be challenging due to changing radio propagation and the difficulty of receiving the relatively weak transmitted signals. QRP enthusiasts may employ optimized antenna systems, enhanced operating skills, and a variety of special modes, in order to maximize their ability to make and maintain radio contact. Since the late 1960s, commercial transceivers specially designed for QRP operation have evolved from vacuum tube to solid state technology. A number of organizations dedicated to QRP operation exist, and aficionados participate in various contests d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
