Customized over-the-air television channel mapping for geographical area using crowdsourcing of over the air television channels

A content receiver, comprising:

• a memory that stores computer instructions and an over-the-air channel mapping that identifies a plurality of over-the-air channels;
• and
• a processor that executes the computer instructions to perform actions, including:
• receiving, from a channel management server, the over-the-air channel mapping that is customized for a geographical area that includes the content receiver;
• storing the over-the-air channel mapping in the memory without scanning for available over-the-air channels;
• receiving, from the channel management server, a schedule identifying a first plurality of time periods in which to perform scans for over-the-air channels, wherein each time period in the first plurality of time periods is non-overlapping with a second plurality of time periods in which another content receiver in the geographical area is instructed to perform scans;
• performing a scan for over-the-air channels that are available to the content receiver during each of the first plurality of time periods;
• and
• providing a scan result from at least one scan to the channel management server to update the over-the-air channel mapping for the geographical area.