Hi Paul,
> Even before the first transmitter was installed, two neighbors were
> complaining about their TV reception on channel 4, 5 and a couple of the
> UHF TV channels. These channels have a significant amount of snow a
> various ghosts in the picture.
>
> The neighbors house is 700 feet from the base of the tower. My tower is
> 90 degrees north from the path of the TV transmitters (TV antennas 55
> miles to the East Southeast).
It certainly can happen. With a structure that large, the neighbors
are probably in the near-field (Fresnel pronounced frinel) zone of the
tower. That's the area where the pattern is being formed.
In this case it is being formed by re-radiation from the guy lines and
tower. The tower and guy lines can greatly affect signal level and
quality at their antennas, even if the tower is off to the side and a
large distance in wavelengths away.
More directional antennas at your neighbor's might cure the
problem, or they might not. Weird things happen that close to a
radiator (or re-radiator).
This is a common problem in microwave links, but most people
don't realize it applies to any frequency. Video ghosting is one give-
away this is happening in the case of video signals.
73, Tom W8JI
w8ji@contesting.com
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