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frequency band collapse: a band of adjacent radio frequencies (e.g., assigned for transmitting radio or television signals)

population collapse: the act of populating (causing to live in a place); "he deplored the population of colonies with convicted criminals"; (statistics) the entire aggregation of items from which samples can be drawn; "it is an estimate of the mean of the population"; a group of organisms of the same species populating a given area; "they hired hunters to keep down the deer population"; the people who inhabit a territory or state; "the population seemed to be well fed and clothed"; the number of inhabitants (either the total number or the number of a particular race or class) in a given place (country or city etc.); "people come and go, but the population of this town has remained approximately constant for the past decade"; "the African-American population of Salt Lake City has been increasing"

radio collapse: a communication system based on broadcasting electromagnetic waves; medium for communication; indicating radiation or radioactivity; "radiochemistry"; transmit messages via radio waves; "he radioed for help"

channel collapse: a passage for water (or other fluids) to flow through; "the fields were crossed with irrigation channels"; "gutters carried off the rainwater into a series of channels under the street"; a television station and its programs; "a satellite TV channel"; "surfing through the channels"; "they offer more than one hundred channels"; a path over which electrical signals can pass; "a channel is typically what you rent from a telephone company"; (often plural) a means of communication or access; "it must go through official channels"; "lines of communication were set up between the two firms"; a deep and relatively narrow body of water (as in a river or a harbor or a strait linking two larger bodies) that allows the best passage for vessels; "the ship went aground in the channel"; direct the flow of; "channel information towards a broad audience"

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