Little change to the feedpoint impedance occurs in the few feet from center, and the reflector loading reactances and beta inductor will be about the same. There may be considerable current on the outside of the coax lines. The short, hatted three-dipole array is certainly not for everyone with the backyard space for it. The array presents some construction challenges that may be beyond what a given situation permits. However, it does offer a number of design ideas that are worth stowing in the notebook for future reference.
Triangles offer one of the least expensive steerable arrays for the lower bands.
While you may not build this array, I'll bet at least one of these ideas works its way into your future antenna construction projects. This item first appeared in AntenneX , Dec., 1998. Data may be used for personal purposes, but may not be reproduced for publication in print or any other medium without permission of the author.