Topband: Inverted L Question

DAVID CUTHBERT telegrapher9 at
Fri Jan 7 07:38:48 PST 2011


let's compare the radiation resistance of the three antennas at 1.8 MHz.

55' x 82' Inverted-L is 16 ohms
100' x 36' Inverted-L with the 36' wire sloping downward at 45 deg is 28
100' base-loaded vertical with 22 uH inductor is 18 ohms

The antenna with the highest radiation resistance will be more efficient and
exhibit greater VSWR bandwidth.

      Dave WX7G

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