Cecil, W5DXP wrote:
"Awwwwhhhhhh Irv, everyone has a senior moment now and then."
That`s my experience.
Arnold B. Bailey in "TV and Other Receiving Antennas" is more thorough
than most. Bailey writes on page 291:
"We have already seen that such conditions (efficient operation) can
exist for many resonant lengths of the rod. The rod if divided into two
sections and connected to a load at its center, will exhibit resonance
when the total length of the rod is any multiple of one half-wave.
----only two resonant lengths will give a simple directivity pattern ---
if the rod operates at its fourth resonant frequency, no signal is
picked up from directions broadside to the antenna in contrast to
operation at its third, second, or first resonance. Only at first
resonance is the directivity pattern as indicated by Figs. 6-20 and
6-21.
At all other resonances above the first, the pattern is going through a
progressive change which will later be more explicitly shown in a
quantitative manner."
On page 348, Bailey gives radiation resistances and drivepoint
resistances for dipole resonances 1 through 10, and shows their current
distribution patterns.
Best regards, Richard Harrison, KB5WZI
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