On 20 Oct 2005 06:44:55 -0700, "CD" wrote:
would the two far-field patterns add up?

Yes.

How would I calculate the power
received by a receiver at a certain distance?

With considerable contortions of phase math, or simply by using EZNEC.

Unfortunately, EZNEC does not model a isotropic radiator (but you
don't really have two of them anyway, do you?), so you may have to
slog through the vector additions. They are not that very difficult,
conceptually (although it seems to have baffled the crew so far).

Phase at a frequency is equivalent to distance, and you already know
both the frequency and the distances. Beyond this, it is no more
difficult than making a three bank shot in billiards.

73's
Richard Clark, KB7QHC