Let me first say I make no claims of originality for this item. It is intended as a simple, inexpensive solution for the newcomer to experiment across the 40m band (7.0–7.2MHz) when only restricted space is available. “A picture speaks a thousand words” so by including a couple I’ll keep it as short as possible!
With the rally season upon us, it is an ideal time to pick up those bits and pieces with which to experiment. The antenna described here consists of a 50R coax fed, inductor loaded 5.44m vertical section mounted on a 1m alloy tube driven into the ground and requires no radials although this may well depend on the local soil structure.
The vertical itself is a salvaged unit (probably ex. CB) consisting of 4 telescoping aluminium sections with an extended length of 5.44m and its mounting bracket.
The thick wire in the picture is the coax centre connection from the bracket mounted SO239 connector to the coil. Continue reading