Why are there no dual band 20M / 30M antenna designs?

March 20th 14, 10:54 PM posted to rec.radio.amateur.antenna

W5DXP

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Why are there no dual band 20M / 30M antenna designs?

On Monday, March 17, 2014 3:56:43 PM UTC-5, Richard Ferryman wrote:
I have never seen a design for a ... dual band antenna for 20M and 30M

A 102 ft dipole fed with ~63.5 ft of VF=0.9 ladder-line through a 1:1 choke will be resonant on both 30m and 20m.
--
73, Cecil, w5dxp.com

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