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  2. List of 50 kW AM radio stations in the United States

    en.wikipedia.org/wiki/List_of_50_kW_AM_radio...

    Whatever is after the comma is the night-time authorization, to avoid interfering with other, higher priority stations. Another comma indicates if it's a directional antenna system. DA means the station uses a directional antenna system. DA1 means the pattern is always directional, with the same pattern, day and night.

  3. Service contour - Wikipedia

    en.wikipedia.org/wiki/Service_contour

    AM contours are based on the standard ground wave field strength pattern, the frequency, and the ground conductivity in the area. While the FCC makes FM and TV service contour data readily available, the AM , while unavailable as a separate data file, can be obtained through an AM Query in the resulting 'maps' section of each record (when using ...

  4. List of North American broadcast station classes - Wikipedia

    en.wikipedia.org/wiki/List_of_North_American...

    Because the AM broadcast band developed before technology suitable for directional antennas, there are numerous exceptions, such as the US use of 800 (kHz) and 900 non-directionally in Alaska, limited to 5 kW at night; and 1050 and 1220, directionally, in the continental US, and without time limits; each of these being assigned to specific ...

  5. Coverage map - Wikipedia

    en.wikipedia.org/wiki/Coverage_map

    Coverage map. Coverage maps are designed to indicate the service areas of radiocommunication transmitting stations. Typically these may be produced for radio or television stations, for mobile telephone networks and for satellite networks. Such maps are alternatively known as propagation maps. For satellite networks, a coverage map is often ...

  6. Broadcast range - Wikipedia

    en.wikipedia.org/wiki/Broadcast_range

    Broadcast range. A broadcast range (also listening range or listening area for radio, or viewing range or viewing area for television) is the service area that a broadcast station or other transmission covers via radio waves (or possibly infrared light, which is closely related). It is generally the area in which a station's signal strength is ...

  7. KKOB (AM) - Wikipedia

    en.wikipedia.org/wiki/KKOB_(AM)

    Website. www.newsradiokkob.com. KKOB (770 kHz) is a commercial AM radio station, licensed to Albuquerque, New Mexico and owned by Cumulus Media. Its news/talk format is branded as "96.3 Newsradio KKOB", reflecting a simulcast with co-owned KKOB-FM 96.3 MHz. Studios and offices are located in Downtown Albuquerque.

  8. Clear-channel station - Wikipedia

    en.wikipedia.org/wiki/Clear-channel_station

    A clear-channel station is a North American AM radio station that has the highest level of protection from interference from other stations, particularly from nighttime skywave signals. This classification exists to ensure the viability of cross-country or cross-continent radio service enforced through a series of treaties and statutory laws.

  9. WJUN (AM) - Wikipedia

    en.wikipedia.org/wiki/WJUN_(AM)

    After the FCC authorized nighttime operation for many daytime AM stations, WJUN began nighttime coverage of sports events in 1986. For the first 25 years, it ran a MOR (middle of the road) format and block programming consisting of country (6 - 7 am, 11 - 12 AM), Gospel 12:45 - 1:00 PM + weekends), Easy listening (5 PM - Sign off), Polka (12:30 ...

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