That also drives up the current in the horizontal wire with attendant increased
horizontal radiation.
I chose for a couple of reason to do the opposite; shorten the wire to make the
feedpoint capacitive and use a shunt inductor to get a 50-ohm match. This
really doesn't improve the 2:1 VSWR, that I consider acceptable, however.
Wes N7WS
On 11/18/2018 8:55 AM, F Z_Bruce wrote:
That sounds about right. As you put a good ground system under it, that value
will come down, and the efficiency will come up.
Many add extra antenna wire that pushes the current up the wire, this also
raises the impedance, hopefully to near 50 ohms with the right length.
A capacitor (variable, then fixed) in series at the feed point can cancel the
added inductance.
73
Bruce-k1fz
https://www.qsl.net/k1fz/beverage_antenna.html
On Sun, 18 Nov 2018 10:41:36 -0500, WW3S wrote:
What should the Z be for a 1/4 wave inv l, with the radials attached to a
radial plate? Mine seems to be 60 ohms or so....
Sent from my iPad
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