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1988-06-27
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597b
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20 lines
Compromise Rhombic for 20 through 10 meters
Free Space
14.2 MHz
4 wires, feet
30 0 0 0 188.75 -92 0 #12
30 0 0 0 188.75 92 0 #12
30 188.75 -92 0 377.5 0 0 #12
30 188.75 92 0 377.5 0 0 #12
1 source
30,1000,0
1 load
resistor
120,800,0
This design was taken from the ARRL Antenna Book. Although the antenna
performs fairly well on 20 meters, the beam splits on the higher bands,
drastically reducing the forward gain. It is interesting to run this model
with 20 segments per wire and note the slight differences in gain, F/B, and
pattern.