Standalone 80 meter sloping inverted L
Installing two separate sloping inverted L
antennas to cover 80 and 160 meters offers a few advantages to a
dual-band approach. Design simplicity (no trap) is probably the
biggest advantage to consider. The tradeoff is two separate feeds
and more wire.
As you will see in the plots below, a standalone inverted
L is a good choice. Compared to the dual-band design, the single-band
versions are broader in terms of bandwidth.
First, the sloping 80 meter inverted L as modeled in
Sloping 160 meter Inverted L Modeled Performance and SWR Plots: 160 meters
Once matched, the bandwidth of this antenna looks great.
In the final screen shot, you can see the 160 meter sloping inverted L. The
vertical leg is 19m high and the sloping leg is 22.8m long.
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