Cecil wrote,

Bob Miller wrote:
Dumb question: how do you reduce noise without reducing the strength
of the signals you want to hear? How does the antenna know which is
which?

Beams seem to "know" how to receive a signal from one direction while
ignoring noise from the opposite direction. My horizontal dipole seems
to "know" how to ignore vertically polarized noise.
--
73, Cecil http://www.qsl.net/w5dxp



Yes, but does your small, inefficient, shielded loop improve the
signal-to-noise
ratio in the directions of its maximum gain over say, a non shielded loop?
Moreover, how do you get your beam to be less sensitive to noise in its
favored direction? Are you robbing Peter to pay Paul?
73,
Tom Donaly, KA6RUH