On 9/13/2018 9:00 AM, Joe Subich, W4TV wrote:
Herb, if the drop wires are equal distant either side of center, it
would effectively be equivalent to a "fat" vertical element (drop
wire). If you don't mind a little experimentation, try using two wires
separated by 12" with 1/2" PVC pipe every 10 feet or so (like very wide
"open wire" line) for the drop wire. If you have a reasonably tall
vertical element, the 12" spacing should provide decent bandwidth.
YES! I'm doing exactly that with my Tee vertical for 160M. It roughly
doubles the SWR bandwidth of that antenna.
The effectiveness of vertical antennas is STRONGLY dependent on ground
conductivity both around the antenna AND in the far field in the
direction of radiation. I have lousy soil (rock) so 160 is the only band
on which I find verticals better than horizontal ones.
73, Jim K9YC
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