Coverage map

Typically a coverage map will indicate the area within which the user can expect to obtain good reception of the service in question using standard equipment under normal operating conditions.

Although this may seem unrealistic for typical situations today, when combined with the above threshold it is considered a good proxy for providing coverage to more sensitive modern receivers used without external rooftop antennas.

For MF / Mediumwave, the BBC defines the daytime service area boundary as a minimum field strength of 2 mV/m.

Inevitably small pockets of poor reception may exist within the main service area that cannot be shown on the map due to scale issues.

In recent years companies such as OpenSignal and Sensorly have emerged that provide coverage maps based on information crowdsourced from consumer applications.