B-2530-G R.F. Amplifier
Contents
1. R F input from radio R F output to antenna Remote keying Remote control 13 8 VDC 50 amp Connector Ground Connection WARNING the case is not a proper DC ground This allows the R F relay hang time or delay to be adjusted to the time desired Sets the pre amp gain to full or reduced value performance and should not require extensive troubleshooting in the field Many causes of common malfunctions are eliminated by the built in protective circuitry NOTE In the event of automatic power shut down the amplifier must be turned off and the cause of shut down determined and removed In case of difficulty check the following before assuming amplifier malfunction a Loose antenna or power supply connections b VSWR of antenna system c Coaxial cables from radio to amplifier and amplifier to antenna d Output voltage of power supply e Power output of radio f Improper fuse rating B 2530 G Instruction Manual R F Amplifier The WARRANTY REGISTRATION CARD must be submitted within ten days to obtain warranty service MIRAGE COMMUNICATIONS assumes no responsibility for any antenna or other accessories connected to this product This warranty does not apply to units that have been misused accidentally damaged subjected to unusual environmental conditions or have had unauthorized modifications of repair WARNING This unit should not be operated with the cover removed The cover confines R F radiation2. 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 2530 G is capable of FM SSB and CW operational modes SPECIFICATIONS Frequency Range sissi nsin a a 144 to 148 MHz R F input power Drive essesssesssesssssessseessressersserssseesssees 1 Watt to 10 Watts RF tp t Pawer fc derino ea E A 300 watts with 10 Watts drive D ty CV CIE seria ste cettefernstana wehiatlamatantateadeiteausaatouyates a 50 I C A S MO dE SitsicoerehcsSsentecc Set ctolbows a aa a a Cones belehec ttaeteess aa FM SSB CW Receive Preamp oiie inie iinoa aa ees ean dune ant ete Dual Gate GaSa 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 ccceeececeseeeeeteeeeeseeeesaes 2 1 Approximately R F input Power Shut down point eceeesceesseeeesteeeeneees 30 35 5 Watts Nominal Temperature Power Shut down point cesceesseesteeenees 175 Degrees F ROVING eni aa Usa n anew ode ea ose Automatic R F sensing or remote external Input Output Impedance lt 3 234 0 evoke tee eantvin
3. 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 IMPORTANT REMINDER All MIRAGE amplifiers manufactured for amateur radio with the exception of repeater amplifiers are rated as ICAS Intermittent Commercial and Amateur Service This generally means 5 minute duty cycles i e 5 minutes transmitting 5 minutes receiving Although all of our units except the hand helds have thermal protection continued use where this cut out occurs can damage transistors 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 mail to MIRAGE 921 HWY 25 South Starkville MS 39759 or 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
4. the slot at the rear on the left side of the amplifier If external amplifier keying is desired a switched ground connection must be provided to the center pin of the RCA jack FRONT PANEL SWITCHES LED S POWER ON OFF SWITCH cee eeecceeeseeeesteeeeneees Turns the D C power on or Circuit Breaker off SSB EMUS WITCH nasen ep aer e e e Selects relay time delay for the mode of operation The relay drop time is lengthened for the SSB mode of operation PRE AMP ON OFF SWITCH cceeecceeeseeeeeees Turns Pre amp power on or off POWER LED Gren taion unisi Indicates that D C power is applied PRE AMP LED Green ssssesesessseessssssessserssseressre Indicates that the pre amp is turned on TX LED Y elloW eeinetan Indicates that the amplifier is keyed on B 2530 G Instruction Manual PAIL E Red riaa aa REAR PANEL CONNECTORS RADIO S0239 Tesni innin a INT S223 9 Sars raana T SNOSE RCA phono Unmarked 0 00 0 eeececeeeeeeeseeeeeteeeeees Molex Unmarked sise iscuh i Rsiiut sncsceaeiocsiesdes Sideegans B 1 4220 Brass Studs c csserssticls aot ak Noten eitia Ground 1 4 20 Brass Stud oo eee eeeeecceeeeeccceeeeeees INTERNAL ADJUSTMENTS SOB DELAY orpieticiniosnosninon an huna PRE AMP ATTENUATOR SWITCH oec TROUBLESHOOTING The Mirage B 2530 G is designed for long trouble free R F Amplifier Indicates amplifier shut down due to excessive VSWR temperature or R F drive power
5. B 2530 G Instruction Manual R F Amplifier WARNING DO NOT PROCEED WITHOUT READING THIS PAGE The B 2530 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 This unit was designed to operate at 13 8 volts with a power supply that provides 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 This unit was designed to operate at I C S Intermittent Communications Service 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 A minimum of type RG 303 Belden Hi
6. Temp 200c coax must be used at the connection between the output connector and antenna or next stage if B 2530 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 2530 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 2530 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 B 2530 G Instruction Manual R F Amplifier B 2530 G R F AMPLIFIER The Mirage B 2530 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 pre amp provides high gain and low noise
7. e eek 50 ohms RF connectors isone rE R E L SO 239 UHF Remote control Connector i529 2 ad oats Shs RCA phono Remote control Connector as slaateidnieen den Sete ones 6 pin Molex B 2530 G Instruction Manual R F Amplifier Supply Volta fE henni a a R R 13 8 VDC for full R F power output Supply c rr nt siie n ne aa e E R a RSi 46 amps nominal Gircuit Breaker oiae T E hace E acekons Low voltage fast trip 50 amps Physical Dimensions sssssssnssesssesesesessseessressersseresseessseesseese 13 x 10 x 5 inches Weight ca cect osccanaistaaaphgossinhytooninenguateanuegedot eae toesaaeetesaev ane 13 pounds INSTALLATION There must be adequate ventilation for the finned heat sink This generally means at least 1 inch clearance from the sink to any surrounding enclosure and an unobstructed flow from the front to the back of the sink CAUTION with extended use the heat sink becomes very hot The D C power leads must use a minimum 8 gauge wire 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 best performance The receiving pre amp gain is set to the high value at the factory To switch to minimum gain move the DIP switch which is located in the hole on the left side cover near the power supply leads to the up position If desired the transmit relay hold in hang time may be adjusted by adjusting the potentiometer located behind
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