Index
Please note that index links point to page beginnings from the print edition. Locations are approximate in e-readers, and you may need to page down one or more times after clicking or tapping a link to get to the indexed material.
Note: Boldface numbers denote definitions and/or primary coverage of a topic.
1.8 MHz (160-meter) antennas, 401–423
3-dB bandwidth, 711
3-dB beamwidth, 711
3-dB points, 711
4-square array, 273–274
4nec2, 546
-wavelength ground-plane vertical, 157, 429–430
λ/2 half-delta sloper (HDS), 214–215
λ/2 loop, 207–209
1λ loops, 209–216
2λ (bisquare) loop, 215–216
11-year cycle, ionospheric propagation, 56
22-year cycle, ...
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