Cecil Moore wrote:

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.

I think Roy pretty well nailed the answer. An interesting result - both
antennas producing equal signals. I'd like to check that by comparing a
dipole to an isotropic in such a field. I assume the results would be
the same. Again, an interesting result. But you both bring some
interesting points.

ac6xg