PRESIDENT THOMAS FCC, Руководство пользователя

Страница: 7 / 44

7
2) ANTENNA INSTALLATION
a)
Choosing your antenna
- For CB radios, the longer the antenna, the better its results. Your
dealer will be able to help you with your choice of antenna.
b)
Mobile antenna
- Must be fixed to the vehicle where there is a maximum of metallic
surface (ground plane), away from windscreen mountings.
- If you already have a radio-telephone antenna installed, the CB
antenna should be higher than this.
- There are two types of antenna: pre-regulated which should be
used on a good ground plane (e.g. car roof or lid of the boot),
and adjustable which offer a much larger range and can be used
on a smaller ground plane ( see § 5 page 8,
ADJUSTMENT OF
SWR ) .
- For an antenna which must be fixed by drilling, you will need a
good contact between the antenna and the ground plane. To
obtain this, you should lightly scratch the surface where the screw
and tightening star are to be placed.
- Be careful not to pinch or flatten the coaxial cable (as this runs
the risk of break down and/or short-circuiting).
- Connect the antenna (
B
).
3) POWER CONNECTION
Your PRESIDENT THOMAS FCC AM/FM is protected against an
inversion of polarities. However, before switching it on, you are
advised to check all the connections. Your equipment must be
supplied with a continued current of 12 or 24 volts (
A
). Today, most
cars and lorries are negative earth. You can check this by making
sure that the negative terminal of the battery is connected either
to the engine block or to the chassis. If this is not the case, you
should consult your dealer.
a)
Check that the battery is of 12 or 24 volts.
b)
Locate the positive and negative terminals of the battery (
+
is
red and
-
is black). Should it be necessary to lengthen the power
cable, you should use the same or a superior type of cable.
c)
It is necessary to connect your CB to a permanent (
+
) and (
-
). We
advise you to connect the power cable directly to the battery (as
the connection of the CB cable to the wiring of the car-radio or
other parts of the electrical circuit may, in some cases, increase
the likelihood of interference).
d)
Connect the red wire (
+
) to the positive terminal of the battery
and the black (
-
) wire to the negative terminal of the battery.
e)
Connect the power cable to your CB radio.
WARNING:
Never replace the original fuse by one of a different
value.
OUTPUT RADIUS PATTERN
c)
Fixed antenna
- A fixed antenna should be installed in a clear space as possible. If it
is fixed to a mast, it will perhaps be necessary to stay it, according
to the laws in force (you should seek professional advice). All PRES-
IDENT antennas and accessories are designed to give maximum
efficiency to each CB radio within the range.
English