Topband: More - lightning protection on 4 sq

[Ken Brown]

Hi all,

Sounds like you're on the right track to determine the possible effect 
of adding series capacitors on the relative phase and amplitudes of the 
currents in a four square array. The feed point impedance of each 
vertical in the array may not be 50 ohms resistive though. A resonant 
quarter wavelength vertical, with a real good radial field may be about 
33 ohms with no reactance, but when the mutual impedances of other 
driven elements in the near field are considered, things change.
> Ok we have agreement all around.  Thanks Price for the data.  Now we know we have .02 in series with 50 ohms, so that is about 4 ohms of reactance and 4 ohms in series with 50 ohms results in a phase shift of 5.06 degrees according to trigonometry.  And now we also have someone who has measured .02 with a 50 ohm load and actually saw 5 ohms of reactance on an antenna analyzer.  That's great.
>   
DE N6KB