Mirage B-34 Instruction Manual
Mirage B-34
The Mirage B-34 is a linear power amplifier designed for the
144-148 MHz band. It is the most useful and versatile amplifier
available for handheld transceiver.
FEATURES
1. High output power of 30 to 35 watts.
30 to 35 watts is achieved with 1 - 8 watts input.
2. Input power from 1 to 8 watts
With an input power of 8 watts maximum, the Mirage is
compatible with most modern handheld transceivers.
3. Small size
This amplifier's size makes it the perfect companion
for field operation without the added weight.
SPECIFICATIONS
FREQUENCY : 144 TO 148MHz
RF INPUT : 1 - 8 WATTS
RF OUTPUT : 35 WATTS TYPICAL
DUTY CYCLE : INTERMITTENT (ICAS)
MODE : FM
KEYING : AUTOMATIC SENSING
SUPPLY VOLTAGE : 12 - 15 VOLTS DC
RF CONNECTORS : TWO (2) SO-239 VHF
SUPPLY CURRENT : 4 AMPS TYPICAL
FUSE : FAST BLOW, 8 AMP
INPUT/OUTPUT IMPEDANCE : 50 OHMS
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Mirage B-34 Instruction Manual
EXPLANATION OF FEATURES
FRONT PANEL
1. ON AIR PILOT LAMP
The ON AIR pilot lamp indicates the amp is transmitting
on the air.
2. POWER ON SWITCH
When engaged, the amplifier is ready to amplify any
signal applied to its input of the proper frequency.
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Mirage B-34 Instruction Manual
BACK PANEL
3. ANT (RF OUTPUT)
The coax from your antenna is connected to this port.
4. RADIO (RF INPUT)
The coax from your radio or exciter is connected to
this port.
5. DC PWR (13.8V)
This port has two wires. The Red wire is for positive and
incorporates a FUSE holder. The Black wire is for
negative . The Mirage B-34 amplifier will accept
voltages
of 12 to 15 volts DC.
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Mirage B-34 Instruction Manual
INSTALLATION
The Mirage B-34 may be placed in a convenient operating
position. There must be adequate ventilation for the finned
heat-sink. This generally means at least 1 inch clearance from
the heat-sink to any surrounding enclosure and an
unobstructed flow form the front to back of the heat-sink. Do
not operate the amplifier in places where it will be exposed to
the direct rays of sun or a nearby heat source such as heaters,
radiators, etc.
CAUTION: With extended use the heat-sink becomes very hot.
If it is necessary to extend the DC power leads use wire of the
same gauge in order to avoid a voltage drop on your power
leads. Be careful that the DC power supplied is no higher than
15 volts or damage may result. A source voltage of 13.8 volts
is recommended and should be used whenever available.
Some automobiles will generate a high current surge when
started. It is recommended that the amplifier be place in the off
position when starting your vehicle.
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Mirage B-34 Instruction Manual
Use a minimum length of good quality 50 ohm cable between
the radio and the amplifier. The antenna system should have a
VSWR of 1.5:1 or better for the best performance. If used in a
mobile
installation, choose a good mobile antenna which will withstand
the power of this amplifier. Be sure to check the SWR for any
degrading once the antenna has been heated by a few minutes
of operation. An antenna with a rating of 100 watts is
recommended.
BACK PANEL
FIGURE I
CONNECTIONS
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Mirage B-34 Instruction Manual
3. Coaxial cables form radio to amplifier, and amplifier to
TROUBLESHOOTING
The Mirage B-34 is designed for long, trouble-free performance
and should not require extensive troubleshooting in the field. If
difficulty is encountered, check the following before assuming
the amplifier has malfunction:
1. Loose antenna or power supply connections
2. VSWR of the antenna system
antenna
4. Output voltage of power supply
5. Power output of radio
6. Improper fuse rating
TECHNICAL ASSISTANCE
If you have any problem with this unit, first check the
appropriate section of this manual. If the manual does not
reference your problem or your problem is not solved by
reading the manual you may call MIRAGE at 601-323-8287.
You will be best helped if you have your unit, manual and all
information on your station handy so you can answer any
questions the technicians may ask.
You can also send questions by FAX to 601-323-6551. Send a
complete description of your problem, an explanation of exactly
how you are using your unit, and a complete description of your
station.
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Mirage B-34 Instruction Manual
B-34 BOOSTER AMP. BLOCK CIRCUIT
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Mirage B-34 Instruction Manual
Notes
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