The E-field can be used in most stationary monitoring (timing)
applications where the antenna is mounted outdoors. It is also suitable
for some land mobile and marine applications. The H-field can be
used for most applications including stationary (indoors and outdoors),
land mobile, marine, and aviation. The H-field is particularly useful
in aviation applications because it is not affected by precipitation
static like the E-field antenna.
Unlike the E-field antenna, an H-field antenna can be mounted indoors
in most buildings and still be effective, especially in timing applications.
Each potential site should be examined and some sample data taken
to ensure performance is acceptable. Beware sources of interference
(computer screens and other electronic devices) and large metal
objects, including hidden structural components such as I-beams
or metal wall studs. It may require some trial and error to determine
an acceptable location for the H-field antenna within the building.
When making your antenna choice, note the E-field antenna needs
to be grounded. The performance of an E-field is, generally speaking,
relative to its height. The height is measured from the top of the
antenna to the ground. By grounding the antenna, its effective height
and performance are increased. An H-field antenna, on the other
hand, does not operate in this manner, and therefore does not require
a ground.
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Loran Receiver Antennas
How
to Buy
