I have always figured that if you can't make a 160 meter vertical broadband
(without ruining its performance), you must work around this problem!
So, I have a remote antenna switch at the base of my vertical. Normally
this switch would allow you to select any one of three antennas. However,
I have its three antenna outlets connected to three taps on the base
loading coil of the vertical.
Thus I can remotely select (with a three position switch in the shack) taps
which give me resonance at 1820, 1840 or 1860 KHz. Thus I have acceptable
SWR from 1810 to 1870. And, this only requires one wire to the remote
switch at the antenna!
Simple, and has worked well for 20 or so years--
Arch, W7ACD
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