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Thread: Espn 1210

  1. #21
    Quote Originally Posted by DavidEduardo View Post


    The daytime map you refer to shows useful coverage much of Broward and the portion of Dade north of Kendall .

    At night, the coverage will be much of the eastern populated part of Broward but nearly none of Dade.

    Given the man-made noise level in Miami, a 10 MV/m signal is needed to be usable on AM. The innermost radio-locator contour is 5 MV/m. And at night, the co-channel interference on that facility will likely make the usable coverage to all be well inside Broward County.

    Of course, that facility moved to a different frequency while the 1040 station moved to 1020 in Miami at the same site where the previous occupant of 1020 used to live. It will be a good Miami signal, but not so good for Ft Lauderdale.
    I'm curious:

    How is man-made noise level calculated for a given area and what factors are taken into consideration?

    Does 'usable coverage' mean in-home listening?

    Is the co-channel interference you mentioned from the Tampa area station on 1040 or is there a station in Cuba on the same frequency?

  2. #22
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    Quote Originally Posted by strangelove View Post
    I'm curious:

    How is man-made noise level calculated for a given area and what factors are taken into consideration?

    Does 'usable coverage' mean in-home listening?

    Is the co-channel interference you mentioned from the Tampa area station on 1040 or is there a station in Cuba on the same frequency?
    Man made noise is not calculated, it is observed. In most urban areas, an AM station has to have over 10 MV/m to overcome the noise.

    "Usable coverage" includes all indoor listening, including at-work and in-home. That is where the majority of listening occurs.

    Where we still have diaries, which segregate listening by home, work and car, we see that indoor listening is about 90% inside the 10 MV/m countour.

    There is night co-channel interference from all over the Caribbean and northern South America, occasionally severe. And yes, Cuba does have a station on 1040.
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  3. #23

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    Quote Originally Posted by DavidEduardo View Post
    There is night co-channel interference from all over the Caribbean and northern South America, occasionally severe.
    And yes, Cuba does have a station on 1040.
    And yes, Bonaire may soon have one on 800.
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