Art wrote:
"I sisagree."

Most correspondents here know from experience that radiation efficacy
falls in too-short antennas.Terman refers to E.A. Laport`s "Radio
Antenna Engineering". Laport has charted Degree-amperes versus Field
Strength or radiation resistance to which Field Strength is
proportional.

Laport gives an example on page 23:
"A straight vertical radiator of height 30 degrees or less has a
radiation resistance Rr following the equation
Rr = Go squared.
where Go is the electrical height in radians (One radian is 57.3
degrees.)

Best regards, Richard Harrison, KB5WZI

On Mar 7, 5:54 pm, (Richard Harrison) wrote:
Art wrote:

"I sisagree."

Most correspondents here know from experience that radiation efficacy
falls in too-short antennas.Terman refers to E.A. Laport`s "Radio
Antenna Engineering". Laport has charted Degree-amperes versus Field
Strength or radiation resistance to which Field Strength is
proportional.

Laport gives an example on page 23:
"A straight vertical radiator of height 30 degrees or less has a
radiation resistance Rr following the equation
Rr = Go squared.
where Go is the electrical height in radians (One radian is 57.3
degrees.)

Best regards, Richard Harrison, KB5WZI

Note. that applies to a particular straight antenna and not to all
radiators as a whole.
Maxwell does not state that a radiator must be straight or any
particular shape for his law
to be applicable.
Art