Mobile Mounting Conderations - Mirage B 1018 G User Manual

The ANTENNA connector is a SO-239 (UHF Female). The design load impedance is 50-ohms,
and any load with a VSWR under 2:1. The output cable must safely handle the full power of the
amplifier, and must have good connections.
Be sure connectors are installed and soldered properly, and the coaxial cables are of reasonably
good quality.
Control cables can be any length, within reason, because current is low.
The RELAY jack is used to manually place the amplifier in the transmit-mode when it is pulled
low (to ground). It is a conventional phono female connector (also called "RCA jack"). This
type of connector is common with VCR's and other consumer electronic devices.
The current from this jack is less than 100 mA, and the open circuit voltage is less than 15 volts.
There are no damaging back-pulses from this jack, it is fully buffered. Never apply voltage to
this jack.
1.4 MOBILE MOUNTING CONSIDERATIONS
A.) Location
Do not locate this amplifier i n excessively warm locations, near heater vents, or in unventilated
areas with ambient temperatures exceeding 120 degrees Fahrenheit. Do not install this amplifier
in damp or wet locations. Be sure air can circulate freely around the amplifier. Do not cover the
heatsink. The best location for this unit is a well-ventilated area inside the passenger
compartment. If the trunk area doesn't get too hot, it can also be a suitable location. Engine
compartments should never be used to house this amplifier!
If possible, mount the amplifier with the LONG length of heatsink fins vertical. This will allow
natural convection to circulate air deeply through the cooling fins. See section 1.1 for details on
temperature.
B.) Wiring
Make sure wiring is installed so wires are not pinched or cut. The length of high-current power
and ground return leads is very important. Keep the heavy dc power-leads short as the
installation permits. This includes the ground lead to the battery or the vehicle's chassis.
Warning, all leads power must be fused at the battery! NEVER depend on fuses
inside the unit for fire protection.
1.) Use a 30 ampere fast-blow fuse at the battery positive connection
2.) Ground the negative lead to a good ground on the vehicle's sheet metal
3.) Never obtain main supply power from under-dash vehicle wiring
If the negative lead is connected directly to the battery (instead of the vehicle
chassis or sheetmetal) it must be have its own 30-ampere fuse installed at the
battery
Note: The length of the cable supplied with the optional remote control head is not critical.
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