Tv And Radio Interference - Fleetwood 1997 Discovery Owner's Manual

AppliANCES
The television and radio systems in your RV have been chosen
to provide good pelformance under varied signal conditions.
Occasionally, though, you may experience ghosts on TV,
flutter when listening to FM broadcasts, or other signal inter-
ference.
The fault is normally not with yoUI' 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 reception
clarity, remember that TV and FM signals have a range of
only about 75 miles under the best of atmospheric and geo-
graphic conditions. The good reception you get at parks
located at great distances from broadcast facilities is probably
the result of satellite, microwave or other cable distribution
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 12-volt DC (brush type) motors used in power vents and
furnaces. Note that nearly every DC motor has brushes. Most
alternating cUl1'ent (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.
TV ANd RAdio
INTERfERENCE
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DisCOVEIIY -
CopYlliql1T J 996, flEETWood ENTEllPlliSES, INC. AlllliqllTS IIESERVEd.