[Elecraft] RE: verticals...........

[Don Wilhelm]

Stuart,
What you say is true - a half wave vertical dipole does not need any
counterpoise to give a good radiation pattern.

However, if it is fed at the end (rather than the center) - the tuning
network (typically a parallel resonant tank circuit), it may feed easier if
a small counterpoise is provided for the bottom end of the tank circuit.
This will be particularly true if the coax is coupled to the tank circuit
with a link.  If a coil tap is used, the bottom end of the tank circuit gets
its ground reference from the same point as the coax braid.

73,
Don Wilhelm  - Wake Forest, NC   W3FPR home page: http://www.qsl.net/w3fpr/
  QRP-L # 485   K2  SN 0020   mailto: w3fpr@arrl.net

----- Original Message -----

> A vertical dipole system is ground independent and does not benefit from a
> counterpoise on your lot.  See L. B. Cebik's excellent antennas site,
> <cebik.com> where he investigated this.  A dipole is a complete antenna
unto
> itself.
>