This clip is cited in Chapter 2 as part of its discussion about nulls in horizontal elevation plots.
“We need to pay particular attention to nulls, because multiple deep nulls are really what prevents us from hearing and working what are otherwise spectacular signals.”
—Tom, W8JI
In the recording, G4XRR reports that the salt water phased verticals are about 10 dB louder than the 4-element yagi at 120 feet. Moments later, however, he reports the yagi has disappeared into the noise, approximating its signal strength at around S3.
“If the signal arrival varied just 1-2 degrees, (the) signal level could go from excellent readability to unreadable.”
Tom, W8JI
Read more about the importance of nulls in the vertical beam widths of all horizontal antennas in Chapter 2 of Saltwater Verticals & Phased Arrays.
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