[Milsurplus] Inverted L antenna

Dennis Monticelli dennis.monticelli at gmail.com
Wed Feb 26 17:41:55 EST 2025


In a 1/4 wave inverted L the horizontal part carries little current so it
does serve mostly to add capacitance.

A 3/4 wave inverted L is different.  It delivers omnidirectional vertically
polarized radiation from the vertical portion and dipole-like horizontally
polarized radiation from its horizontal portion.  On 40M a common
arrangement is about 33' up and 67' across, though the 2:1 radio is not
important, rather it's the length for resonance.

For more info see my QST article in the July 1991 issue.  "A Simple
Effective Dual-Band Inverted L Antenna."  It was also included in the ARRL
Handbook for 2000 and other years.

Dennis Monticelli AE6C
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