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Mirage B 1018 G 

 

This compact, rugged, VHF RF power amplifier greatly improves signal-quality and 
range.  This unit contains a low-noise GAsFET receiving amplifier, a 160-watt power 
amplifier, and associated control and protection circuitry. 

This amplifier operates from any well-filtered direct-current 11-15 volt power source 
capable of supplying 30 amperes under full-load. The power source must be either 
negative grounded or totally ground independent. 

 

Warning,

 

never use this unit with: 

1.)  positive-ground supplies 

2.)  vehicles having positive-ground batteries 

3.)  power sources exceeding 16 volts 

Always fuse power leads at the battery with 30-ampere fast-blow fuses. 

 

This amplifier has the following important features: 

1.)  Automatic RF actuated transmit and receive switching or manual switching 

2.)  Active bias for greatly improved SSB linearity 

3.)  Low-noise GAsFET receive preamplifier 

4.)  True push-pull circuitry and clean RF layout for excellent stability 

5.)  Excess SWR and overdrive protection 

6.)  Remote control capabilities 

 

 

 

 

 

 

 

 

 

 

 

Содержание B 1018 G

Страница 1: ...ive grounded or totally ground independent Warning never use this unit with 1 positive ground supplies 2 vehicles having positive ground batteries 3 power sources exceeding 16 volts Always fuse power...

Страница 2: ...nd FM 3 3 Feedlines and Antennas 4 0 SSB and Linear modes 4 1 Splatter and Distortion 4 2 Drive Power 4 3 Duty Cycle 4 4 T R Control or Switching 4 5 Power Output 4 6 Antennas and Feedlines 5 0 Receiv...

Страница 3: ...ll work as long as losses are acceptable The cable must safely handle 200 watts at 150 MHz Be sure connectors are installed and soldered properly 5 The switches in this unit are self explanatory They...

Страница 4: ...he amplifier will run hotter If cooling is a problem the largest change will come from forcing air over the heatsink with a small fan The heatsink in this amplifier is sized for ICAS operation at 160...

Страница 5: ...and amplifier NEVER omit this fuse no matter how safe you think it is Suitable fuses and holders are generally available from electronics car stereo and automotive parts stores This device requires a...

Страница 6: ...reely 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 s...

Страница 7: ...all antennas and unplug all equipment when not being used 2 0 RADIO OR EXCITER This amplifier will work with almost any exciter or radio operating between 140 and 150 MHz The most important guideline...

Страница 8: ...ven to higher output levels with no detectable change in signal bandwidth 3 1 DRIVE POWER Drive power on FM CW or FSK is limited by power ratings of transistors and heatsink temperature The transistor...

Страница 9: ...with power level One design goal of this amplifier was minimizing the effects of non linearity and reducing needless splatter Unlike tube amplifiers solid state amplifiers go into gain compression lon...

Страница 10: ...n carrier output power is normally 25 or more of the peak envelope power as indicated on a true peak reading meter Unmodulated carrier output power should not exceed 25 watts 4 2 DRIVE POWER To preser...

Страница 11: ...ht be marginal and there is no external air blowing across the heatsink mount the amplifier with heatsink fins vertical This allows natural convection to circulate air See section 1 0 for details Warn...

Страница 12: ...ratio SNR of the received signalshould easily be established at the antenna The required preamplifier noise figure varies greatly with the receiver bandwidth and antenna type as well as the location...

Страница 13: ...damaged Never use the preamplifier if the antenna is near other transmitters 6 0 IN CASE OF DIFFICULTY Always be sure the power is connected properly section 1 2 and the RF connections are correct se...

Страница 14: ...power is too low under watt 6 7 TECHNICAL ASSISTANCE Technical assistance is available Monday through Friday by calling 662 323 8287 between the hours of 8 00 a m and 4 30 p m central time Please be s...

Страница 15: ...15 8 0 SCHEMATIC...

Страница 16: ...16...

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