Coverage Pattern Studies
Krohe Electronics can provide three separate types of coverage
prediction studies, FCC field strength method, Drive studies, and
Longley-Rice studies. Below are examples of each type in more detail.
FCC field
strength study:
This method follows the FCC prescribed method of
taking spot readings from 10 miles out to the loss of grade B signal on
a minimum of eight radials. Below is a typical study for KMCI in
Lawrence KS. This map shows both an FCC study overlayed on a drive
study. Also shown is a map with the manual measurement points for the
FCC study.
Drive Study:
Krohe Electronics can also provide a drive type
field strength study where data is taken by literally driving a grid
pattern over the entire coverage area. This method has the advantage of
showing terrain shading not usually visible in the traditional FCC
method. Below are two maps, one showing a typical drive study for the
Topeka area. The other map shows the drive track.
Longley-Rice
Study:
Krohe Electronics can provide a Longley-Rice
coverage map for a specific transmitter site or sites. This study need
not be limited to a TV or FM broadcast signals. Krohe Electronics can
provide this service for ENG systems also which will show graphically
where a live truck will work. News departments typically use this to
plan live coverage of events. Please click on the maps for a larger view
of a typical study. Plese see ENG truck coverage link to see a map of
typical ENG truck coverage. The maps below show coverage and path loss
examples for a typical LPTV station.