radio antenna FORD AEROSTAR 1997 1.G Owners Manual

56
*
[AS07850(ALL)06/95]
Using headphones with the rear seat
controls
[AS07855(ALL)03/96]
Two 3.5 mm headphone jacks have been
provided on the rear seat controls. Plug
headphone(s) into the provided jack(s) to
operate.
*
[AS07860(ALL)04/96]
Common Radio Reception
Conditions
*
[AS07865(ALL)05/96]
Several conditions prevent FM reception from
being completely clear and noise-free, such as
the following:
*
[AS07870(ALL)05/96]
1. Distance/Strength
*
[AS07875(ALL)05/96]
The strength of the FM signal is directly related
to the distance the signal must travel. The
listenable range of an average FM signal is
approximately 25 miles (40 kilometers). Beyond
this distance, the radio is operating in a fringe
area and the signal becomes weaker.
*
[AS07880(ALL)08/95]
NOTE: Always make sure your antenna
(whether you have a power antenna or
a manually adjustable antenna) is fully
extended to its maximum length for
proper reception. If your antenna is not
fully extended, you may experience
signal loss while traveling in fringe
reception areas.
*
[AS07885(ALL)05/96]
2. Terrain
*
[AS07890(ALL)05/96]
The terrain (hilly, mountainous, tall buildings) of
the area over which the signal travels may
prevent the FM signal from being noise-free.
*
[AS07895(ALL)05/96]
If there is a building or large structure between
the antenna and station, some of the signal
ªbendsº around the building, but certain spots
receive almost no signal. Moving out of the
File:04cpasa.ex
Update:Fri Jun 7 14:24:14 1996

57
ªshadowº of the structure will allow the station
to return to normal.
*
[AS07900(ALL)05/96]
When the radio waves are reflected off objects or
structures, the reflected signal cancels the normal
signal, causing the antenna to pick up noise and
distortion. Cancellation effects are most
prominent in metropolitan areas, but also can
become quite severe in hilly terrain and
depressed roadways.
*
[AS07905(ALL)05/96]
To minimize these conditions, a stereo/mono
blend circuit has been incorporated into this
system. This feature automatically switches a
weak stereo signal to a clearer monaural signal,
which improves the quality of reception.
*
[AS07910(ALL)05/96]
Several sources of static are normal conditions
on AM frequencies. These can be caused by
power lines, electric fences, traffic lights and
thunderstorms.
*
[AS07915(ALL)05/96]
Another reception phenomenon isStrong Signal
Capture and Overload. This can occur when
listening to a weak station and when passing
another broadcast tower. The close station may
capture the more distant station, although the
displayed frequency does not change. While
passing the tower, the station may switch back
and forth a few times before returning to the
original station.
*
[AS07920(ALL)05/96]
When several broadcast towers are present
(common in metropolitan areas), several stations
may overload the receiver, resulting in
considerable station changing, mixing and
distortion.
*
[AS07925(ALL)05/96]
Automatic gain control circuitry for both AM
and FM bands has been incorporated into this
system to reduce strong signal capture and
overload.
File:04cpasa.ex
Update:Fri Jun 7 14:24:14 1996