Topband: one-way propagation

[Mike Waters]

I've often thought that some "one-way propagation" is simply due to the
differences in antennas. For example, two stations with the same power,
ambient noise level, etc. are receiving on Beverages pointed at each other,
but their TX antennas have different takeoff angles and/or patterns. For
example. station A with an NVIS antenna (like a low horizontal loop) might
hear station B who is transmitting on a vertical, but maybe not vice versa.

73, Mike
www.w0btu.com