"Frank Turner-Smith G3VKI" wrote in message
...
On 31/10/14 21:22, Ralph Mowery wrote:
Here are some numbers if there are no reflections to upset theory.
deg difference in dB

20 54
30 1.25
45 3
60 6
70 9.32
80 15.2
90 infinity

This also holds up for right hand and left hand circular.

There is another modification if the antennas are separated vertically or
horizontal. You usually get lots more isolation if the antennas are
mounted
one above the other instead of horizontal.


Are you sure about the 20 degree difference? Should it have been 5.4dB?


Yes, fat fingered the thing and missed putting in the decimal point.

:-)



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