[CQ-Contest] physical antenna diversity reception
W0UN -- John Brosnahan
shr at swtexas.net
Tue Mar 16 08:36:36 EST 2004
>P.S. I have been some discussions that the
> antennas need to be wavelengths apart,
> but I think that is when you are trying
> to copy a single station and want the
> second antenna to deal with QSB and path
> differences, and wide separation is
> probably an advantage there.
> Perhaps what I'm doing would be better
> described as "directional" diversity.
Although you have some "directional" diversity for a signal
whose azimuthal angle is varying, your situation is normally
referred to as polarization diversity. What is most
common, especially under band-opening and band-closing
conditions, is for the polarization to rotate and having
separate vertical and horizontal arrays can reduce the
associated QSB.
--John W0UN
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