Well it is understandable. The current maximum in the half-wave antenna is lifted well above ground level. Had there been a radial system it would have had to employ very long radials, for most of the vertical's radiation would have been hitting the ground at points far away from the base of the vertical. It is only at those distant points that very long radial wires would be able to gather the radiation from the ground's surface and feed it back to the feedpoint.
Charles, W2SH ________________________________ From: Topband <[email protected]> on behalf of Mike Waters <[email protected]> Sent: Sunday, February 18, 2018 6:31 PM To: Roger Kennedy Cc: [email protected] Subject: Re: Topband: 1/2 wave inv L Yup! The lack of a radial system explains why the 1/2w vertical worked better. :-) 73, Mike https://nam03.safelinks.protection.outlook.com/?url=www.w0btu.com&data=02%7C01%7C%7C45041a0e70384ee2478008d57727b9e9%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636545934864203108&sdata=Pk6iMJXzsyQupFqxoKoeDy7Qn7WTNUF%2BOgHr40Q5n6E%3D&reserved=0 On Feb 18, 2018 4:55 PM, "Roger Kennedy" <[email protected]> wrote: Many years ago, a friend of mine used to operate on 160m with vertical antennas suspended on a big Weather Balloon filled with hydrogen . . . After using Quarter-wave verticals for a few months, he changed over to Half-wave verticals . . . he found they worked much better ! He didn't have much of a radial system (due to lack of space), mainly just earth rods at the base . . . so I suspect that's one of the reasons why. Roger G3YRO _________________ Topband Reflector Archives - https://nam03.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.contesting.com%2F_topband&data=02%7C01%7C%7C45041a0e70384ee2478008d57727b9e9%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636545934864203108&sdata=nFxj%2BLqwi1DLEFj3hHgpcSkBljKeHcT2AZrzNna7YSw%3D&reserved=0 _________________ Topband Reflector Archives - http://www.contesting.com/_topband
