Telecommunication
The other meaning of the term "channel" in telecommunications is seen in the phrase communications channel, which is a subdivision of a transmission medium so that it can be used to send multiple streams of information simultaneously. For example, one radio station can broadcast radio waves into free space at frequencies in the neighborhood of 94.5 MHz (megahertz) while another radio station can simultaneously broadcast radio waves at frequencies in the neighborhood of 96.1 MHz. Each radio station would transmit radio waves over a frequency bandwidth of about 180 kHz (kilohertz), centered at frequencies such as the above, which are called the "carrier frequencies". Each station in this example is separated from its adjacent stations by 200 kHz, and the difference between 200 kHz and 180 kHz (20 kHz) is an engineering allowance for the imperfections in the communication system.
KFC (defunct radio station)
The newspaper enlisted a local radio expert, Roscoe W. Bell of the Northern Radio Company, to set up a radio transmitter at the newspaper building. Arrangements were also made for the local Navy radio station, located at the L. C. Smith building, to participate by sending fight summaries via radiotelegraph, which had a much greater coverage than the radiotelephone station, although limited to listeners able to read Morse code dots-and-dashes. The reported wavelength to be used for a July 1 radiotelephone test transmission was 340 meters (882 kHz). The next day the newspaper reported that the test went well, so, beginning at 11:00 a.m., the radiotelephone broadcast would be sent on 275 meters (1091 kHz), while the Navy's radiotelegraph reports would go out on 600 meters (500 kHz).