Mirage B-310-G Instruction Manual

Mirage B-310-G Instruction Manual

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Mirage B-310-G

The Mirage B-310-G is a VHF power amplifier designed for the
144-148 MHz band. New features make it the most useful and
versatile amplifier available for the handheld transceiver.
Features include all mode compatibility (FM/SSB/CW), wrap­around heat sink, high gain GaAsFET preamplifier, and 25O mW
to 8 watts input.

FEATURES

1. High output power of 100 watts
100 watts is achieved with 250 mW to 8 watts input.

2. All mode compatibility (FM/SSB/CW)
In the SSB mode the time constant of the Carrier
Operated Transmit (COX) relay is set to approximately
one second to prevent annoying relay chatter
during conversation, and achieving smooth SSB
transmission.

3. Wrap-around heat sink
The heat sink and combined case, by original design
is used for excellent heat dissipation as well as a
new smart appearance.

4. Input power from 250 mW to 8 watts
With an input power of 8 watts maximum, the Mirage
B-310 -G is compatible with most modern handheld
transceivers.

5. GaAsFET receive pre-amplifier
A built-in low noise GaAsFET receive pre-amp enables you
to enjoy a more comfortable VHF QSO with weak
stations.

Mirage B-310-G Instruction Manual

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SPECIFICATIONS

FREQUENCY : 144 TO 148MHz
RF INPUT : 250 mW - 8 WATTS
RF OUTPUT : 100 WATTS TYPICAL
DUTY CYCLE : INTERMITTENT (ICAS)
MODES : FM SSB CW
RECIEVE PRE-AMP : 18db TYPICAL
KEYING : AUTOMATIC SENSING
SUPPLY VOLTAGE : 12 - 15 VOLTS DC
RF CONNECTORS : TWO (2) SO-239 UHF
SUPPLY CURRENT : 15 AMPS TYPICAL
FUSE : FAST BLOW, 20 AMP
INPUT/OUTPUT IMPEDANCE : 50 OHMS

EXPLANATION OF FEATURES

FRONT PANEL

1. XMIT LED
The XMIT LED indicates the amp is transmitting on the
air.

2. SWR LED
The SWR LED lights when the SWR is to high.

3. PRE-AMP LED
The PRE-AMP LED will illuminate when the pre-amp is
engaged. The pre-amp can be used independently even
if the amplifier's power is off.

4. PWR LED
If the LED is in the off position the amplifier will pass the
RF in a straight through mode. This means that both
the receive and transmit signal will bypass the internal
circuitry of the amplifier. If the LED is illuminate then
the amplifier is in the standby mode and will amplify any
signal that is supplied to its input of more than 250 mW.

Mirage B-310-G Instruction Manual

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5. MODE (SSB/FM) SWITCH
When in the SSB mode the amplifier will delay the
chan ge over time of the carrier operated transmit relay
to 1 second before disengaging. This will prevent relay
chatter as a result of working SSB or CW. In the FM
mode the relay will operate normally and disengage once
the transmit signal is dropped.

6. PRE-AMP (ON/OFF) SWITCH
When engaged the amplifier's pre-amp will be switched
into the circuit for receive. A sensing circuit will
disengage the pre-amp when a transmitted signal is
applied to the amplifier's input. The pre-amp may also
work independently if the amplifiers main power
switch is off.

7. POWER (ON/OFF) SWITCH
When engaged, the amplifier is ready to amplify any
signal applied to its input of the proper frequency.