Bruce,
I have considerable experience with loop arrays; whilst they are good
performers in an electrically noisy environment, they suffer from poor
directivity at higher angles. This can also be seen with EZNEC models by
looking at the AZ Plot with an Elevation angle of say 40 degrees.
The directivity and RDF is much better with a pair Phased Flags for example.
Other issues, Tom has mentioned a too close element spacing which will lower
the array gain. Also there is the issue of array stability i.e. a minor
phase or amplitude error will completely screw up the pattern.
73
Andrew G8LUG
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