Palstar COMMANDER HF-2500 EXPORT Owner's Manual

Summary of COMMANDER HF-2500 EXPORT

  • Page 1

    Commander hf-2500 export owner’s manual palstar, inc. Command technologies division 9676 n. Looney road piqua, ohio 45356 u.S.A. Customer service and sales telephone: 800-773-7931 international: 937-773-6255 fax: 937-773-8003 e-mail: [email protected] rev. 1.3 14 july 2010

  • Page 2: Table Of Contents

    2 table of contents introduction 3 safety warnings and precautions 4 unpacking instructions 5 hv transformer installation 6 connections 8 rear panel view 9 front panel view & tuning procedure 10 theory of operation & adjustments 12 warranty, service, and returns 14 specifications 15 rf deck view 16 ...

  • Page 3: Introduction

    3 introduction the commander hf-2500 export is class ab 2 linear power amplifier. It has been designed for operation on all amateur frequencies from 1.80 mhz to 29.7 mhz, excluding the 30 meter band. Three eimac 3cpx800a7 pulse rated ceramic-metal triodes configured in a grounded grid circuit allow ...

  • Page 4: Caution:

    4 caution: • do not attempt any type of service or repair on this amplifier without first removing the ac power and allowing at least 10 minutes for the high voltage capaci- tors to bleed off ! • do not operate this amplifier with the top or bottom covers removed. The voltages inside the cabinet are...

  • Page 5: Unpacking

    5 unpacking carefully remove the commander hf2500 e xport amplifier from its shipping carton making sure there is no damage evident from shipping. If there is any damage, notify the deliv- ering shipper immediately, fully describing the damage. The hv power transformer was shipped separately, as its...

  • Page 6: Hf-2500 E

    6 hook the snap rings on the provided lifting handle into the holes in the tabs on either end of the transformer hf-2500 e xport transformer installation position the transformer over the mounting holes in the chassis and insert the four provided 1/4-20 phillips head screws through the transformer m...

  • Page 7

    7 plug the second connector on the transformer into the mating one that comes from the ac control board. It is keyed so that it cannot be plugged in backwards. Make sure that the connector halves are pressed together until the lock tabs snap in place. This completes hf-2500 e xport transformer insta...

  • Page 8: Connecting Your Amplifier

    8 connecting your amplifier • connect the rf output of your transceiver to the rf input connector on the rear of the hf- 2500 e xport with 50 ohm coaxial cable. • connect the existing station antenna tuner or a wattmeter and dummy load to the rf output connector on the hf-2500 e xport with rg-8 or b...

  • Page 9

    9 rear panel view tuned input adjustments (one for each band) automatic level control adjust rf output (to wattmeter & antenna or antenna tuner) rf input (from transceiver) ground post key line (to transceiver) alc (to transceiver) ac mains twistlock connector ac power twistlock connector wiring (vi...

  • Page 10: Tuning Procedure

    10 tuning procedure set the front panel controls to the following positions: on - off switch. Off standby - operate standby band switch desired band tune control preset tune settings (see test sheet) load control preset load settings (see test sheet) after the controls have been preset and the ampli...

  • Page 11

    11 case it is inadvertently keyed when the switch is thrown). Key the exciter with no rf drive ap- plied. The red transmit led should illuminate, and the meter should indicate approximately 150 ma of plate current. Apply 5 to 10 watts of rf drive, the plate current should rise slightly. If the plate...

  • Page 12: Theory Of Operation

    12 theory of operation the commander hf-2500 e xport uses three c.P.I. Eimac 3cpx800a7 pulse rated ce- ramic/metal triodes in a class ab 2 grounded grid configuration. Nominal drive power of 20 to 65 watts. This amplifier will operate on the following amateur bands: 160, 80, 40, 20, 15, 17, 12 and 1...

  • Page 13: Output Filter Circuit

    13 gain for normal operation as specified in its owners manual. 4. While speaking louder than normal into the microphone, adjust the alc pot through the access hole on the rear panel . Adjust for 2800 watts maximum output as indicated on an external peak reading wattmeter. 5. On some newer model tra...

  • Page 14: Limited Warranty

    14 limited warranty palstar inc. Warrants the commander hf-2500 e xport to be free from defects in material and workmanship under normal use and service to the original buyer for a period of one (1) year from the date of delivery to that buyer (the “warranty period”). Palstar inc.’s obligation under...

  • Page 15: Specifications

    15 specifications commander hf-2500 e xport hf linear power amplifier • band coverage: 160, 80, 40, 20, 17, 15, 12, and 10 meter amateur radio bands. • types of emissions: ssb, fm, cw, am, rtty, sstv. • driving power required: 20 to 90 watts nominal at rated continuous carrier output. • maximum outp...

  • Page 16: Hf-2500 Export T

    16 hf-2500 export t op v iew.

  • Page 17

    17 bottom view showing access plate hv power supply pcb cathode and filament interface pcb access plate removed.

  • Page 18: Hf-2500 E

    18 hf-2500 e xport hv power supply.

  • Page 19

    19 a c m a i n s a n d s t e p - s t a r t b o a r d / 8 6 2 - 1 1 8.

  • Page 20

    20 c o n t r o l a n d m e t e r i n g b o a r d.