Picture 13
Picture 12
Included with the antenna is a special mix
#31 ferrite core
that
needs
to
be
mounted on the control cable as close to
the antenna as possible. Loop the cable
through the ferrite core a minimum
of 3 times. (Picture 11) It is used to
decouple the control cable from the
antenna. If you fail to install this ferrite
core the control cable acts like a single
radial and the antenna will be untunable.
The next thing is the matching coil. This coil must
go from the antenna base to the immediate ground.
The Small MT-1 antenna bracket provides this
connection. On a loaded mobile antenna below
10 MHz some form of impedance matching is
required. Pictured is the matching coil on Small
MT-1 bracket (Picture 12).
The up/down switch (Picture 13) that comes
with the antenna package will plug directly
into the control cable to the antenna, then
there will be 2 wires left on the switch. One
will be white with red dots and one red with
black dots. This system is designed for a
standard 12vdc syste m. Keep in mind
polarity of these two wires are not important.
This switch just reverses polarity for motor
movement. With the switch mounted up
(wire on bottom) you can wire the red wire
with black stripes to positive side of your 12vdc system, and the white wire with
red stripes to the negative side. This will allow the antenna to go up while you press
the up button (this is the way most wire up their systems). Up on switch means
the antenna is going UP in height and DOWN in frequency. If you prefer that reversed
all you have to do is reverse the connections. Be sure you add the fuse to the positive
side.
Most installs: Red with black dots -- 12 volt positive
White with red dots 12 volt ground
