RECEPTION DISTURBANCE
41
The most common types of television interference are as follows :
IGNITION NOISE:
Black spots or horizontal lines may appear, picture may
flutter or drift. Usually caused by interference from
automobile ignition systems, neon lamps, electric drills
and other electric appliances.
GHOSTS :
Ghosts are caused by the television signals following two
paths. One is a direct path and the other is reflected from
tall buildings, hills or other objects.
Changing the direction or position of the antenna may
improve the reception.
SNOW :
If you are located on the fringes of a television reception
area, the signal will be weak, and your picture may contain
many small dots.
When the signal is extremely weak, it may be necessary to
install an external sensitive antenna to improve the picture.
RADIO FREQUENCY INTERFERENCE :
This interference produces moving ripples or diagonal
streaks, and in some cases causes loss of contrast in the
picture.
Summary of Contents for LSMD-121
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