Can I connect two antennas pointed in different directions and run them down
the same downlead to my receiver without any reception problems?
Thank you

Continental Plus wrote:
"Can I connect two antennas pointed in different directions and run them
down the same downlead to my receiver without any reception problems?"

The antennas are coupled by their common transmission line and by
proximity to each other. Both antennas can capture and reradiate
signals. These form a directional array of some sort in almost every
case. This may or may not be a problem.

One common configuration is crossed dipoles. If these are at right
angles and have equal power distribution and extraction, this array is
called a simple turnstile antenna.

On page 722 of the 3rd edition of "Antennas" Kraus says:

"Thus, the field normal to the infinitesimal dipoles is circularly
polarized. In the case being considered in Fig 21-13 the field rotates
in a clockwise direction.

Replacing the infinitesimal dipoles with 1/2-WL dipoles results in a
practical type of antenna with approximately the same pattern
characteristics. This kind of antenna is a George Brown Turnstile
antenna (Brown-1)."
Remember RCA`s Brown Lewis and Epstein?

The 19th edition of the ARRL Anntenna Book says on page 19-10:

"As previously mentioned, a 90-degree phase shift must exist between the
two antennas."

See Fig 16 on page 19-10 for the individual and combined patterns of the
crossed antennas.

Best regards, Richard Harrison, KB5WZI