[NLRS] Yagi Spacing Q.. - response
Jim Froemke
jim.k0mhc at earthlink.net
Thu Oct 23 12:00:33 EDT 2008
Hi Scott
For your application (vertical polarization) a bigger issue is the
proximity of each antenna to the vertical metal mast. For best performance
you'll want to keep the vertical metal mast OUTSIDE of the capture areas of
both antennas. This means your horizontal spacing along your horizontal mast
between each antenna and the vertical mast should be AT LEAST 1/2 the
diameter of each antenna's capture area.
You could use a non conductive vertical mast (if it's strong enough)
but when your coax makes a 90 degree angle to descend down the vertical mast
it also becomes a vertical conductor located on the vertical mast between
the two antennas so you'll still have this problem.
73, Jim
K0MHC
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