[Elecraft] Trap dipole fed with ladder line?

[Stuart Rohre]

AT several recent ARRL Field Days, we use doublets of double Zepp
dimensions, center ladder line fed, and do NOT see any undesirable lobing at
four times frequency.  IE, it appears that the lobes tend to fill in with
good propagation conditions causing incoming and outgoing signal refractions
of random nature.

Any coil loaded antenna is more lossy than the all wire doublet.  Shortening
doublets to 60 per cent of a half wave is still highly efficient in the 90
per centiles per L. B. Cebik, on <cebik.com> antenna web site.
73, Stuart K5KVH