[Elecraft] Inverted-L (was OT: Vertical antenna)

[Steve Ellington]

Guy:
Very interesting....

Some of your comments were verified in a recent QST article.

Mar 2010 - QST (Pg. 30)

An Experimental Look at Ground Systems for HF Verticals
The author experimented with resonant vs nonresonant radials on the ground 
and found performance improved when the radials were cut to electrical 
resonance vs just measuring them with a tape.

Given this, it stands to reason that if the same radial field is used by a 
multiband vertical on a higher frequency, the high current point would be at 
some distance from the antenna's base thus reducing efficiency.

Now here's the question....
Folks assume ground radials to be (non resonant) but that isn't the case. So 
what would be the best solution for a multiband antenna with ground radials? 
Well if we follow this idea, we would need multiple 1/4 wavelength radials 
for each HF band for best performance.

My inverted L is 50' up and 150' out. I use a separate elevated counterpoise 
for each band. I've found that a ground rod and some buried radials have 
virtually no effect. I just use them for lightning protection.

Steve
N4LQ