wrote
i have a uhf tv antenna on my balcony. i am getting ghosting.

i think the ghosting is from signals bouncing off the balcony wall and
hitting the antenna a second time.
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An r-f reflection capable of producing a ghost in an analog TV broadcast
signal needs to have something like a 1/2 microsecond minimum propagation
delay from the direct signal. That takes a path difference of ~492 feet, so
your balcony wall probably is not be the source of your ghost.

More likely it is from a reflecting surface (building, sign, water tower,
etc) somewhere near the direct path from the TV tx to your antenna. You
might try a corner reflector or yagi, and aim it in various directions (not
necessarily toward the TV tx) looking a for a cleaner overall signal.

RF