Jim Kelley wrote:

Cecil Moore wrote:
Are we talking normal operation or receiving big
bang background radiation?

The source of radiation was not described; only its distribution. It
was like being surrounded isotropically by radio sources - not unlike
the 3 K background. But there are other sources which pretty well
surround us as well.

OK, sometimes I lose the context. If the radiation is arriving
isotopically, it doesn't matter which direction the Yagi is
pointed (as I inferred from what you said).

But arriving isotropic radiation would all converge at a point.
If a plumber's delight Yagi driven element is centered on that
point, it would receive all the radiation in a default-isotropic
mode.
--
73, Cecil http://www.qsl.net/w5dxp