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QRO Technologies HF-3KDX, Инструкция по эксплуатации

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QRO HF-3KDX LINEAR AMPLIFIER

 

INSTRUCTION MANUAL

 

 
 
 
 

 
 
 
 
 
 
 
 

 

QRO TECHNOLOGIES, INC 

1117 West High Street 

Bryan, OH  43506 USA 

Tel or Text: (419) 551-9354 

E-mail: [email protected]

 

Internet: http://www.qrotec.com

 

                                                                                                                                   

 

PUBLICATION DATE: September 2012 

COPYRIGHT 2012 BY QRO TECHNOLOGIES, INC. ALL RIGHTS RESERVED. 

THIS MANUAL OR ANY PART THERE OF MAY NOT BE REPRODUCED IN ANY FORM 

 WITHOUT PERMISSION FROM  QRO TECHNOLOGIES, INC.

 

 

Содержание HF-3KDX

Страница 1: ...an OH 43506 USA Tel or Text 419 551 9354 E mail kb8vu qrotec com Internet http www qrotec com PUBLICATION DATE September 2012 COPYRIGHT 2012 BY QRO TECHNOLOGIES INC ALL RIGHTS RESERVED THIS MANUAL OR ANY PART THERE OF MAY NOT BE REPRODUCED IN ANY FORM WITHOUT PERMISSION FROM QRO TECHNOLOGIES INC ...

Страница 2: ... negative going adjustable from Front Panel Harmonic Suppression Meets F C C Requirements Keying Requires relay contact closure or sink of 80 ma 12 VDC or 15 VDC on transmit supplied by transceiver Input Impedance 50 ohms unbalanced VSWR 1 5 1 Output Impedance 50 ohms unbalanced with SWR 2 1 or less Tube Requirement 1 8877 3CX1500 Triode Power Line Requirement 220 240 VAC 60 Hz at 25 amperes maxim...

Страница 3: ...ion 7 Location 7 AC Power Line Considerations 7 8 Antenna 8 Grounding 8 Equipment Interconnections 9 Safety Interlock Switch 9 Driving Power 9 10 Tube Precaution 10 Reading the Meters 10 Front Panel Switches Controls 10 11 Initial Power Up 11 Tune Up Procedure 12 13 Using the ALC Adjust Control 14 Periodic Maintenance 14 Troubleshooting Chart 14 15 Schematics PCB Layouts Parts Lists 16 ...

Страница 4: ...the buyer Please call the factory at 1 419 551 9354 for shipping instructions Make sure when returning the amplifier you have insured the instrument for the full replacement cost QRO Technologies Inc is not liable for any damage incurred during return shipments PROPRIETARY NOTICE _____________________________________ This instruction manual schematic diagrams printed circuit board layouts and tech...

Страница 5: ...nected to the neutral earth pole of the power supply Before operating this unit ensure that the protection conductor green wire is connected to the ground earth protective conductor of the power outlet Do not defeat the protective features of the third protective conductor in the power cord by using a two conductor extension cord or a three prong two prong adapter Before operating this unit 1 Ensu...

Страница 6: ...ALLATION Before performing any of the following installation procedures make sure that the amplifier has not been plugged into the AC supply line As part of the installation process you must install the tube and transformer PLATE TRANSFORMER Remove the plate transformer from its shipping carton You will notice two indexed connectors Position the transformer so the connector with the red leads is o...

Страница 7: ...ace the amplifier in the transmit mode LOCATION Do not operate the Amplifier in excessively warm locations or near heating vents or radiators Be sure air can circulate freely around and through the Amplifier cabinet and can provide an unobstructed air inlet for the internal cooling fan Do not place any books magazines manuals or equipment that will impede the free flow of air near the sides and th...

Страница 8: ...n mind that the green line cord wire is connected to the Amplifier chassis ANTENNA The output circuit of the Amplifier is designed to be connected to an unbalanced transmission line that has a 50 ohm characteristic impedance Lines of other characteristic impedance may be used providing the SWR standing wave ratio does not exceed 2 1 The RF OUT connector is a UHF type SO 239 You will need a mating ...

Страница 9: ...perate Standby switch located on the front panel ALC OUTPUT Connect this socket to the ALC input of your transceiver A 0 to 20 V negative ALC voltage is present at this socket Refer to your transceiver manual for proper connection information Whenever the Amplifier is overdriven the ALC circuitry creates a negative voltage that is fed back to the transceiver to reduce its gain and help prevent fla...

Страница 10: ...tage Bottom scale indicates 0 to 7 0 KV normal operating range is 3 0 4 0 KV volts Each division represents 2 KV 200 volts Plate Current PC Plate Current Top meter scale indicates 0 to 1 4 amperes Each division represents 4 amperes 400 milliamperes Grid Current Meter The left hand meter always indicates grid current between 0 and 300 milliamperes Each Division indicates 10 milliamperes FRONT PANEL...

Страница 11: ... Switch Selects the desired band of operation Red LED When lit the amplifier has been turned on and it has gone through its warm up cycle Green LED When lit the amplifier has been keyed and amplifying the power supplied by the transceiver INITIAL POWER UP Preset the amplifier s front panel controls as follows On Off Off Operate Standby Standby Multi meter PV Plate Voltage Fan Fan High ALC Adjust F...

Страница 12: ...EUP OBJECTIVE The objective of the tune up procedure is to bring the amplifier to resonance by adjusting the tune load controls desired maximum output power 1 Place your transceiver in CW mode and set its output power level to 60 watts 2 Select your desired band using the amplifier s bandswitch 3 Put the Multi meter switch in the PC position 4 Place the amplifier in the operate position 5 Set the ...

Страница 13: ...3 60 3 90 7 20 14 20 21 30 28 50 WARC BAND OPERATION The HF 3KDX has not been designed to operate on the WARC Bands This occurs because there are not enough bandswitch positions to accommodate these bands You can get some amplification on 17 12 meters You will have to use your transceiver s internal antenna tuner This will get you a proper input match to the amplifier Also you will have to set the...

Страница 14: ...e blades of the blower Any large accumulation of dust on the blades will impede proper cooling air to the tube TROUBLESHOOTING CHART The following charts lists specific difficulties that could occur in your Linear Amplifier Several possible causes may be listed for each difficulty Refer to the Printed Circuit Board diagrams PCB and the Schematic Diagrams to locate and identify the parts listed in ...

Страница 15: ...nents on LV Bias PCB a Fuse F301 F302 b Bridge Rectifier D301 c Reg 301 2 Meter Lamps PL1 PL4 Meter Switch Amplifier will not key when transceiver is keyed to transmit 1 Components on LV Bias PCB a Fuse F301 F304 b Bridge Rectifier D303 2 Operate Standby SW5 Front Panel ALC Inoperative 1 Improper connection between transceiver and amplifier 2 POT R13 ALC Adjust on front panel No RF Output 1 Improp...

Страница 16: ...16 SCHEMATICS PCB LAYOUTS PARTS LISTS Schematic diagrams printed circuit board layouts and parts lists can be downloaded from our website qrotec com ...

Страница 17: ...17 ...

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