Topband: Vertical antennas aren't always best for DX

n4is at n4is.com n4is at n4is.com
Mon Nov 26 11:05:43 EST 2018


Roger

Every dipole or inverted V irradiate  50% of the power horizontal polarized
broadside with the wire and 50% of the power vertical polarized along the
wire. After the first refraction it does not matter. 

This is an electro-magnetic wave law. You can check that on EZENEC, it is
not a anecdote.


The advantage over vertical 1/4 wave antenna is efficiency.  The vertical
efficiency depends on the ground plane resistance, it is common to see
invert L with only 50 % irradiated power, the other 50% is dissipated on the
ground.

"In Theory, we know everything, but nothing works"

"In Practice, everything works, but we don't know why"

We never will fully understand the 160m band.

73's
JC
N4IS




More information about the Topband mailing list