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Key to Contours
Somewhat arbitrary, but empirically correct for inexpensive radios likely to be used by most listeners:
50 mV/m: Decent listening inside steel buildings under more adverse conditions
25 mV/m: Decent listening inside steel buildings under normal conditions
10 mV/m: Decent listening inside frame and brick buildings and in cars under more adverse conditions in urbanized
areas
5 mV/m: Decent listening inside frame and brick buildings and in cars under normal conditions in urbanized areas
20,000 watt day and nighttime groundwave CP comparison with old 5,000 watt omnidirectional daytime groundwave (created 5/2002):
Relative Field Polar and tower arrangement for 20,000 watt facility. Tower arrangement is the same day and night, as is the pattern.
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