Specifications

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4.1.1.2 Vertical - more than 500 miles
(830km)
Use this type of antenna when you need to maintain long range com-
munications of 500 to 5000 miles (830km to 8300km).
4.1.2 Shape of the an-
tenna loop
The ideal shape of the antenna for
this situation would be a single turn
circle. However, this would require
complicated mounting.
Most needs can be fulfilled with a
one-turn square, rectangle or trian-
gle shape. When there are limitations on what the size and shape of
the loop can be, it might be necessary to reduce the size by making
the loop two, three or four turns.
4.1.3 Antenna directivity
Like any antenna, a loop antenna is directional. As the size of the loop
is reduced, by configuring it as two, three or four turns, the directivity
becomes more significant.
Vertically mounted two-turn
loop. The coupler is installed in
center of lower section antenna.
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