Why would the reactance change on a ground mounted vertical
for no apparent reason. I used to get a resonance point at
1.840mhz. Lowest SWR was at 1.850. All was fine until about
1 month ago. Checking the antenna condition again, revealed
that a zero reactance point no longer existed although the
lowest SWR did not change. Checking the antenna, I found one
ground radial broken at the radial ring. I had 50 radials now
I have 49. Is it possible that this one radial is no longer
allowing me to find a zero reactance point on the antenna?
Shouldn't I find a zero reactance (resonance) point somewhere?
Tuning my MFJ unit, from 1.7 to 4.0 mhz does not find a resonant
condition anywhere. I can get close to zero, 10 uH, but no longer
zero. Any ideas what's going on?
K2WH
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