Dave... would it be a fair extrapolation to take your last sentence, and draw the conclusion that if adding radials changes feed impedance, then there was actual ground loss in the near field? Or that if we add more radials and feed impedance change is not seen, then we are at a minimum for ground loss?
The above statements certainly align with my gut feeling, but my gut feeling is different than a mathematical proof :-) Tim N3QE ________________________________________ From: Topband [[email protected]] on behalf of DAVID CUTHBERT [[email protected]] Sent: Monday, December 17, 2012 5:23 PM To: ZR Cc: Donald Chester; [email protected] Subject: Re: Topband: Ground mounted 1/2 and 1/4 wave verticals (was GAP) Carl, What we do in the near-field to control ground loss affects the far-field signal equally at all elevations. Therefore there is no need to measure far-field field strength at more than one elevation. We have control of the near-field and anything we do in that region shows up as a change in input impedance. _______________________________________________ It is undesirable to believe a proposition when there is no ground whatsoever for supposing it is true. — Bertrand Russell
