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Message: <blockquote data-quote="JimJ" data-source="post: 2060030" data-attributes="member: 555251">Only reason I can think of is an active array-kind of deal, where multiple antennas are run for noise canceling. But that requires extra hardware and precise planning.Otherwise, the only way to combine antennas that works is by co-phasing them, which involves placing the verticals exactly a quarter-wavelength apart and feeding them with electrically-equal lengths of feedline. This is what you see on semi trucks with CB antennas on either mirror, just so happens that the width of a typical rig is about a quarter wave on 27MHz. That tends to smooth out the pattern, make it more omnidirectional with less nulls.I don't know...</blockquote>

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