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FM channel numbers are most commonly used for internal regulatory purposes. The range originally adopted in 1945 began with channel 201 (88.1 MHz), or a value high enough to avoid confusion with television channel numbers, [ 2 ] which over the years have had values ranging from 1 to 83 .
Armstrong charged that this reassignment had the covert goal of disrupting FM radio development, [15] however RCA's proposal prevailed, and on June 27, 1945 the FCC announced the reassignment of the FM band to 90 channels from 88–106 MHz, [16] [17] which was soon expanded to 100 channels from 88–108 MHz, with the first 20 channels reserved ...
A radio band is a small frequency band (a contiguous section of the range of the radio spectrum) in which channels are usually used or set aside for the same purpose. To prevent interference and allow for efficient use of the radio spectrum, similar services are allocated in bands.
Therefore, in effect, the FM broadcast band comprises only FM channels 201 (88.1 MHz) through 300 (107.9 MHz). Originally, FM stations in a market were generally spaced four channels (800 kHz) apart. This spacing was developed in response to problems perceived on the original FM band, mostly due to deficiencies in receiver technology of the time.
The group, made up of both former Grateful Dead musicians plus new artists—including John Mayer—was playing at Shoreline Amphitheater, an outdoor venue not far from where I live in Silicon Valley.
Add solar superflares to the list of natural disasters of concern. Superflares are extremely strong solar flares – explosions with energies up to ten thousand times that of typical solar flares.
However, there are a few Class B stations with grandfathered power limits in excess of 50 KW, such as WETA (licensed for Washington DC in zone I, at a power of 75 kW ERP), WNCI (Columbus, Ohio in zone I, at 175 kW ERP), KPFK (Los Angeles in zone I-A, at 110 KW ERP), and the most extreme example being WBCT (Grand Rapids, Michigan, in zone I, at ...
Angelina Jolie’s kids tend to shy away from the spotlight.. The Oscar-winning actress, 49, shared in an interview with Good Morning America for her new film Maria that her six children ...
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