B-5030-G Instruction Manual R. F. Amplifier
WARNING:
DO NOT PROCEED WITHOUT READING THIS PAGE.
The B-5030-G produces at least 300 watts of VHF R.F. power and is not to be taken lightly.
Severe R.W. burns can be sustained at this power level!
Power Supply
60 amperes continuous current. This voltage is measured under full load. The nominal current
draw of this amplifier is 46 amps, and should be considered the minimum current value. Due to
power transistors matching, some amplifiers may draw up to 50 amps and put out up to 350 watts
R.F. power. Therefore, a power supply should be selected that delivers at least 55 to 60 amps
more than the nominal current value.
Amplifier
(50% Duty Cycle, i.e., 5 minutes transmitting, 5 minutes receiving). The amplifier duty cycle
determines the dissipation rating. Ref. 1992 Radio Amateur duty Handbook page 5-9.
This unit should not be operated with the cover removed The cover confines R.F. radiation,
including harmonics, to the inside of the case. Operation of the unit without the cover could
result in direct harmonic radiation. The harmonic filters contained in the circuit will not
suppress direct radiation.
Glass mount type antennas are not suitable and may explode your window if used with this much
power.
: This unit was designed to operate at 13.8 volts with a power supply that provides
: This unit was designed to operate at I.C.S. - Intermittent Communications Service
A minimum of type RG-303 Belden HI Temp (200c) coax must be used at the connection
between the output connector and antenna (or next stage if B-5030-G is used as a driver) or
breakdown may occur. Further, double shielded coax is recommended in mobile application as
R.F. may leak into the electrical system of the mobile application (i.e. computerized type
ignition, etc.).
The B-5030-G draws a nominal DC current of 46 amps and most alternators are rated at only
slightly above this value. Check with your owner's manual of the vehicle you plan to install the
B-5030-G in to determine if you need a larger alternator. Remember to calculate a worst case
scenario; i.e. headlights, heater (defroster or A/C), windshield wipers and radios. Remember that
alternators are rated at highway cruise speeds and not stop-and-go traffic.
MIRAGE is not responsible for dead batteries in mobile installations, or damage to anything that
was caused by poor engineering practices by the consumer of this product!
Failure to comply with these instructions may void your warranty!
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B-5030-G Instruction Manual R. F. Amplifier
B-5030-G
R.F. AMPLIFIER
The Mirage B-5030-G is the next generation of Power Amplifiers for 144-148 MHz.
New features make it the most useful and versatile amplifier available. Features include
automatic power shut-down circuitry for protection against high antenna VSWR, high
temperature and excessive R.F. power input. A newly designed GaAsFET receive preamp provides high gain and low noise amplification for weak signal applications. The
pre-amp includes a switchable attenuator to reduce signal output level. This is useful in
preventing Receiver Overload and subsequent Intermodulation Distortion caused by
strong signals. Provision is made for automatic or remote (external) keying, and for
remote control of all front panel functions using the Mirage RC-1 Remote Control Unit.
The Mirage B-5030-G is capable of FM, SSB, and CW operational modes.
SPECIFICATIONS:
Frequency Range...................................................................144 to 148 MHz
R.F. input power (Drive).......................................................1 Watt to 50 Watts
R.F. output power.................................................................. 300 watts with
50 Watts drive.
Duty Cycle............................................................................. 50% "(I.C.A.S.)"
Modes.................................................................................... FM, SSB, CW
Receive Pre-amp ...................................................................Dual Gate GaAs MesFet,
Gain 22/16 dB-Nominal.
Noise figures less than 0.6
dB. 1 dB compression point
greater than -13 dBm input
(Nominal)
VSWR Power Shut-down point ............................................2:1 Approximately
R.F. input Power Shut-down point........................................ 55-65 +/- 5 Watts Nominal
Temperature Power Shut-down point ...................................175 Degrees F.
Keying................................................................................... Automatic (R.F. sensing)
or remote (external).
Input/Output Impedance........................................................ 50 ohms
R.F. connectors...................................................................... SO-239 (UHF)
Remote control connector ..................................................... RCA phono
Remote control connector ..................................................... 6 pin Molex
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