The television and radio systems in your
RV
have been cho-
sen
to
provide good performance under varied signal condi-
tions. Occasionally, though, you may experience
ghosts on
TV,
flutter when listening to PM broadcasts, or other signal
interference.
The fault is normally not with your receiver or antenna sys-
tem. The idea that antennas, whether amplified or not,
"pull
in"
a signal is a popular misconception. An antenna does not
pull a signal out
of
air by virtue
of
its "power." The antenna
only responds to signals present at the antenna elements.
Antennas with boosters only amplify these signals.
Since distance from the broadcast tower is critical to recep-
tion clarity, remember that TV and PM signals have a range
of
only about 75 miles under the best
of
atmospheric and
geographic conditions. The good reception you get at parks
located at great distances from broadcast facilities is proba-
bly the result of satellite, microwave or other cable distribu-
tion systems. The antenna on your
RV
is no competition for
these very expensive installations.
In
addition, TV and radio frequency interference results from
the electromagnetic fields produced by electric arc discharge.
This arcing is found in lightning, vehicle ignition systems,
and in l2-volt DC (brush type) motors used in power vents
and furnaces. Nearly every DC motor has brushes. Most
alternating current (AC) motors do not have brushes, and
therefore do not generate the arcing interference. This is why
this type
of
interference is less noticeable in a household
environment.
As the signal diminishes with distance and geographical fea-
tures (mountains, etc.), the effect
of
electric arc interference
may become more and more noticeable. Eventually, the sig-
nal will be overcome by the interference. The following sug-
gestions can improve reception:
PACE
ARROW
AppliANCES
TV
AND
RADIO
INTERFERENCE
CAUTION
Lightning strikes during
thunderstorms
may
affect
the
electrical systems
in
your motor home. Sensi-
tive
electronic equipment
may
be
damaged
by
the
electrical spikes and
surges caused
by
electri-
cal
disturbances
in
the
atmosphere. Disconnect
the
electrical power cord
and
cable
TV
service
if
you
expect atmospheric
electrical disturbances.
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