Table of Contents
Advertisement
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: 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.
Advertisement
Table of Contents
Related Manuals for QRO Technologies HF-3KDX
Summary of Contents for QRO Technologies HF-3KDX
- Page 1 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.
- Page 2 10 meter also useable in USA with proof of license and user modification. WARC Band Coverage: 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 will get some amplification on 17 &...
-
Page 3: Table Of Contents
TABLE OF CONTENTS Warranty Proprietary Notice Safety Notification Unpacking & Inspection Reshipment Instructions Top Cover Removal Transformer & Tube Installation 6, 7 Introduction Location AC Power Line Considerations 7, 8 Antenna Grounding Equipment Interconnections Safety Interlock Switch Driving Power 9, 10 Tube Precaution Reading the Meters Front Panel Switches &... -
Page 4: Warranty
WARRANTY _____________________________________ The HF-3KDX is warranted against defects in material and workmanship for a period of two years for the original date of sale. This warranty does not cover the 8877/3CX1500 tube which carries a separate one year warranty issued by the tube manufacturer/distributor. -
Page 5: Safety Notification
ALWAYS THINK SAFETY __________________________________________________ THIS LINEAR AMPLIFIER DESCRIBED IN THIS MANUAL CONTAINS VOLTAGE HAZARDOUS TO HUMAN LIFE AND SAFETY WHICH IS CAPABLE OF INFLICTING PERSONAL INJURY. NEVER OPERATE THE AMPLIFIER WITH THE TOP COVER REMOVED AND THE TOP COVER SAFETY SWITCH DEFEATED. BEFORE REMOVING THE TOP COVER MAKE SURE THE AC LINE POWER CORD HAS BEEN DISCONNECTED FROM THE AC POWER SOURCE. -
Page 6: Unpacking & Inspection
Inspect each component for any noticeable defect or damage. Notify QRO Technologies if any defect or damage is apparent. It is a good idea to keep all the shipping cartons and materials in the event the amplifier needs to be reshipped. -
Page 7: Introduction
30 minutes at or near maximum rated output power requires use of auxiliary cooling. The HF-3KDX is designed to be used with any transceiver which can deliver adjustable output power from 0 to 100 watts. A tuned input circuit feeds the tube which is connected in a grounded grid configuration. -
Page 8: Antenna
Use the following NEMA plug configuration: 200/240 VAC 20 Ampere 6-15P or 6-20P Due to the power involved, this Amplifier should have its own 240 VAC electric service line. This line should have three 12-gauge conductors, and 20 ampere fuses in each "hot" wire. If a single 240 VAC line serves the entire station, make an effort to connect your equipment so the load is balanced between the two "hot"... -
Page 9: Equipment Interconnections
EQUIPMENT INTERCONNECTIONS Interconnection between the Amplifier and a typical transceiver is shown in the "Interconnection Diagram" located inside your transceiver owner’s manual. Many brands of equipment usually follow the same general pattern. Please refer to this diagram plus the amplifier's Rear Panel Pictorial while reading the following: RF IN Connect this socket to the RF output connector of your transceiver. -
Page 10: Tube Precaution
beyond the point where the Amplifier's power output ceases to increase. If you turn the control past this point, nonlinear operation may occur. TUBE PRECAUTION After prolonged operation, let the Amplifier run for several minutes without drive applied so the fan will cool the tubes before you turn the Amplifier off. -
Page 11: Initial Power Up
4.0 KV PC (Plate Current): Zero OBSERVE THE PLATE CURRENT (IP) DURING THE WARM-UP PERIOD. IF IT STARTS TO RISE, IMMEDIATELY TURN THE AMPLIFIER OFF. THE PLATE CURRENT SHOLD NOT RISE DURING THE WARM-UP PERIOD. CALL QRO TECHNOLOGIES FOR INSTRUCTIONS. -
Page 12: Tune-Up Procedure
Place your transceiver in the CW mode or any mode that will provide a continuous carrier for tune- up. At this time make sure that your transceivers output power level has been set to zero. TUNE UP PROCEDURE Before making any tune up procedures, make sure your amplifier is connected to an appropriate load capable of handing at least 1,500 watts of power. - Page 13 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.
-
Page 14: Using The Alc Adjust Control
USING THE FRONT PANEL ALC CONTROL TO ADJUST AMPLIFIER OUTPUT POWER. You may want to utilize an alternative to adjusting the drive power at the transceiver. The Front Panel ALC Adjustment Control allows you to adjust the ALC for the amount of output power you desire. - Page 15 5. Component failure on HV Diode or HV Capacitor PCB Multi-meter inoperative in Plate Current 1. Resistors R310 & R311 LV & Bias PCB Function 2. Switch SW1 Meter Switch PCB 3. M-1 Multi-meter 4. F305 1-1/2 Ampere Fuse Plate idle current over 200 mA 1.
-
Page 16: Schematics, Pcb Layouts, Parts Lists
SCHEMATICS, PCB LAYOUTS, & PARTS LISTS Schematic diagrams, printed circuit board layouts, and parts lists can be downloaded from our website (qrotec.com).