Only daytime groundwave contours are provided, out to the 2.0 mV/m and 0.5 mV/m contours.
Go to the AM Query page:
Type in a call sign, like KFI (640 KHz, Los Angeles), hit enter, and on the next page shown, click on the station call sign of interest.
The facility record of KFI:
Look for the following links at the bottom of the daytime record:
Daytime Groundwave 0.5 mV/m Service (and 2.0 mV/m) contours on Bing map
Daytime Groundwave 0.5 mV/m Service (and 2.0 mV/m) contours on Open Street or USGS Maps
KML / Google Earth (0.5 mV/m Daytime Groundwave Service and 2.0 mV/m contours)
Text file for KML-capable browsers
Click on one of the map links and a contour map will be shown.
This is a nice innovation by the FCC. Hopefully, skywave plots will be implemented next.
|FCC's contour map for KFI-640|