[CQ-Contest] 4 Square/ Raised Radial Questions

[k3bu at optonline.net]

> How can the current on the outside of the shield of the coax 
> upset a phasing
> network that is in an all metal box?
> 
> 
> David Robbins K1TTT

Just picture wire connecting bases of all verticals, connected at the phasing box.
The best demonstration of the effect is the 3 vertical array fed by Stack-Match phasing unit, advertised for this purpose too.
The result? 3 el. omnidirectional antenna, regardless where you beam.
I have used it with three vertical array, each with 4 elevated radials, using baluns at the antennas, but still no difference in the pattern.
The problem was that coax shields were connected at the phasing unit. Breaking the shields connections solves the problem, confirmed by other users.

73 Yuri, K3BU.us