[Elecraft] What antenna should I build?

[Ron D'Eau Claire]

Don W3FPR wrote:

The theory is that the 80 meter wire will also serve on the 3rd harmonic at
30 meters and the 40 meter element will similarly serve on 15 as a 3/2
wavelength antenna, giving you coverage of 80 thru 15 meters with the 3
elements.

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Ha, Ha! Good point, Don. Shows how long it's been since I used a fan dipole:
since before 30 meters. Yes, a dipole for 80 is about 134 feet long and 3/2
waves on 30 meters is just about 141 feet, allowing for nominal end-effect.
That's close enough to use one wire on both bands. 

Ron AC7AC