[TowerTalk] Stacked tri-banders vs. Single mono-banders

[Pete Smith]

I've been toying with adding a second C-3 at 69 feet to my current one at
97 feet.  The 2-stack appears from modeling to be pretty decent for 20 and
15, but leave a lot to be desired on 10, given the over-wide spacing.  Do
the assembled antenna wizards have any opinions on the idea of adding a 3
or 4-element 10-meter yagi halfway between the two tribanders?  If I
understand things correctly, I would need to have odd 1/4 wave multiples of
feedline from the common feed point (UNUN box, presumably) to ensure that
all 3 antennas would get equal current on 10, despite their dissimilarity.
I'd also try to make the 3 driven elements line up with each other, more or
less, to mibnimize phasing errors from that source.  On 15 and 20, the
10-meter antenna would be effectively disconnected, of course, but with the
two C-3s my hope is that feedpoint currents will be similar even if I can't
follow the 1/4 wave rule for them.  Right/wrong?

Any opinions, caveats, things to avoid?




73, Pete Smith N4ZR
n4zr@contesting.com 

"That's WEST Virginia.  Thanks and 73"

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