|Click on a state to view coverage.|
is affected by many factors.
Read the Coverage Map Notes below to understand these factors on the state and individual maps.
- The computer model is sensitive to antenna performance. Antenna performance is a function of local conditions, causing signals to be stronger signal level in some directions than others.
- Placement of NWR antennas is dictated by the tower owner, which may result in a less than ideal set up.
- The antenna may be affected by nearby structures or bodies of water.
- In some special instances, the antenna may have been intentionally adjusted to be "directional" and provide better coverage to a specific area to the detriment of other areas.
- Because of variations in local site conditions, the performance of an individual transmitter and antenna may be less than predicted or expected.
- Seasonal environmental conditions, such as icing or
heavy rain, affect performance of a transmitter station
and its various components, particularly those subject
to continuous weather exposure.
- The coverage maps are shown in a single color format,
which relates to an estimated signal level.
- White: Signal level of greater than 18dBuV: Reliable
- White: Signal level of greater than 18dBuV: Reliable coverage