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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, 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
).
c)
Fixed antenna
- A fixed antenna should be installed in a clear a 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 PRESIDENT antennas and
accessories are designed to give maximum efficiency to each CB radio within
the range.
3) POWER CONNECTION
Your PRESIDENT JOHNSON II ASC 12/24 V 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 (2 A) by one of a different
value.
MOUNTING DIAGRAM
English
