On 10/20/2020 1:21 PM, jimlux wrote:
A lot of these antennas are an electrically short dipole. so they don't
require the height. From a gain standpoint, an infinitesimally small
dipole is 1.5 dBi and a full size dipole is 2.5 dBi (mostly from the
broader lobe for the short antenna).
What might be interesting is modeling, say, a 25 foot dipole with the
center 13-14 feet off the ground.
N6BT has built and sold a LOT of designs like that. Photos of at least
one of them in the work I published online 4-5 years ago answering the
question, "If Can Put My HF Vertical On My Roof, Should I?"
Slides for the Pacificon talk: k9yc.com/VerticalHeight.pdf
Text version for Nat'l Contest Journal: k9yc.com/AntennaPlanning.pdf
73, Jim K9YC
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