Topband: Ground Screens - Another Small Space Option

[Paul Christensen]

> I've used screens when I needed a wide bandwidth ground system, but never
under other conditions.

Adding a screen or preferably, additional short radials at the base will 
assist in stabilizing the resistance component of the vertical radiator and 
capacitance across the base insulator as ground conditions change due to wx, 
seasonal ground moisture, etc.  The stabilization effect is probably more 
important with directional systems than it is for non-directional radiators 
and is common in AM broadcast systems where an array is sited in a flood 
plane.

Paul, W9AC