Charlie,
There is nothing wrong with making a true Zepp antenna for any band - we
usually refer to them as a J-Pole that is popular at VHF/UHF.
Use 300 ohm transmission line for the 1/4 wave matching section.
See the works of Gary O'Neil N3GO on J-poles for discussion of the ideal
characteristic impedance of the matching section. See
http://www.knightlites.org/n3go_workshop/N3GO_JPole.xls for a worksheet
to give you all the details.
Your J-Pole does not have to be oriented vertically - it will work as a
horizontal antenna or a sloper. It can be bent between the radiator and
the matching section.
73,
Don W3FPR
On 7/15/2016 8:34 AM, Charlie T, K3ICH wrote:
Also, what's wrong with making a true "Zepp" antenna on the higher bands by
adding the required length of twin lead for the ¼λ matching section? On
20 M and up, this would result in a fairly easy length of wire to deal with.
Anybody tried that approach? I know the "J-Poles" are popular on VHF, but
how about a 20 meter wire J-Pole?
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