View Single Post
  #4   Report Post  
Old June 18th 07, 11:09 PM posted to rec.radio.amateur.antenna
Jim - NN7K Jim - NN7K is offline
external usenet poster
 
First recorded activity by RadioBanter: Aug 2006
Posts: 86
Default End-feeding dipoles

One other thing, I see, is that End Fed Dipoles
have a extremely high impedence, and hence a very
HIGH VOLTAGE (altho at little current), unlike
center-fed dipoles. Might make insulation
problematic to prevent arcing . Can generate
hundreds (if not Thousands) of volts, at the feed
point! Jim NN7K

Richard Clark wrote:
On Mon, 18 Jun 2007 10:42:08 -0400, Chuck
wrote:

In my own experience, matching has
always been extremely easy and
trouble-free. So does anyone know why
this might be thought so frought with
problems that its general use would be
discouraged?


Hi Chuck,

The slur may attend the illusion that just the antenna is being
matched and the operator cries foul about transmission line common
mode currents.

However, if those currents go unnoticed; then end fed antennas are
marvelous and have this undeserved bad reputation. On the other hand,
if those currents are noticed and fixed, the antenna probably doesn't
work any better; but after all that effort "it damned well should and
no one is going to convince me otherwise."

73's
Richard Clark, KB7QHC