[CQ-Contest] 4 Square/ Raised Radial Questions

[k3bu at optonline.net]

> 
> Sounds like something wrong with that box to me. On my 4-square the
> feedpoints are all connected by radials, the feedlines all 
> connect to the
> bases and the switchbox just like another radial... and it 
> definitely works!
> 
> 
> Just imagine how it would look if there were LOTS of radials all 
> connectedso it approximated a solid metal plane, that is what 
> the raw designs are
> compared to, a perfect conducting plane. The currents are 
> injected at the
> bases of the verticals with no need for feedlines baluns/chokes 
> or anything
> else, the model works just like the real thing... or vice versa.
> 
> David Robbins K1TTT

 
It has to do with configuration of 3 vertical array a StackMatch, using disconnected element as a parasitic, coax line turning that element into reflector, but connected shields messing up the current flow.
No problems with classic 4 squares, get patterns OK, but that 3 el was just plain omnidirectional. If you disconnect the shields, it works fine. Verified in real life.
 
73  Yuri, K3BU.us