I
believe that antenna arrangement according to Figure 1 has optimal parameters.
SWR of the antenna was less 2.0:1.0 at the pass band 200- kHz.
In the vertical plane Antenna has DD similar to an ellipse with
a maximum in the radiation along the horizontal wires. Vertical
plane radiation is going at the angle near 25- degree. In the
horizontal plane the antenna has almost circular DD.
Antenna for the 80- meter Band
Figure 5 shows sketch of the
antenna.
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Loop
of the antenna made of a length a coaxial cable in diameter of
1-1/2 inch.
Horizontal
wires are located parallel to the ground at the height 3.5- meter
above it. Such antenna design was taken by me because of the local
conditions and my possibility. Capacitors are placed in the plastic
box. Figure 6 shows a picture of the
antenna. Figure
7 shows the plastic box with installed inside capacitors.
Coupling Loop made according to Figure 8. Horizontal wires have diameter 2... 3- mm. Copper
strand wire or antenna cord may be used for those ones.
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