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Summary of Contents for Palstar Commander II
- Page 1 COMMANDER II 2 METER VHF LINEAR AMPLIFIER ————————————————————— 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 Fax: 937-773-8003 E-mail: info@palstar.com...
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Page 2: Table Of Contents
Table of Contents Introduction Inside View Specifications Unpacking Instructions HV Transformer Installation Safety Warnings and Precautions Front & Rear Layout Installation Preparation Operating Procedure Operating Hints Typical Operating Conditions Table Warranty, Service, and Returns RF Deck Schematic Control and Bias Board Schematic High Voltage Power Supply Schematic... -
Page 3: Introduction
INTRODUCTION The Commander II is a grounded grid class AB2 linear power amplifier that operates on the Amateur 2 meter band (144 to 148 MHz). A single CPI/Eimac 3CPX800A7 pulse-rated external anode triode with forced air cooling and modern stripline circuitry ensures efficient and conservative operation. -
Page 4: Inside View
Commander II Inside Layout Cooling T/R Relay Filament High Voltage High Voltage Blower Board Transformer Interlock Transformer Switch 3CPX800A7 Triode Tube Load Tuning Input Tuning High Voltage Multimeter Control Multimeter Capacitor Piston Capacitor Board Switch Board (underneath) -
Page 5: Specifications
Specifications Commander II 2 Meter VHF Linear Power Amplifier Frequency Range: 144 to 148 MHz. • Modes: USB, LSB, RTTY, FM, CW. • Power Requirements: 117/200/234VAC 50/60 Hz. • RF Drive Power: 10 to 15 Watts nominal; 30 Watts maximum, for full 1 KW (CW) output. -
Page 6: Unpacking Instructions
UNPACKING INSTRUCTIONS Carefully remove your Commander II from its shipping carton making sure there is no dam- age evident from shipping. If there is any damage, notify the delivering shipper immediately, fully describing the damage. Do not destroy the packing material, since it may be reusable later, should you require fac- tory service, or need to transport the Amplifier for any other reason. - Page 7 Lift the HV transformer and tilt it as shown in the picture. Gently lower the transformer until the side with the connector is resting on the amplifier chassis. Make sure that none of the wir- ing is pinched under the trans- former.
- Page 8 Plug the connector on the trans- former into the one on the wiring harness. 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. Dress the wiring down out of the way, as shown.
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Page 9: Safety Warnings And Precautions
Never operate the amplifier with more drive than required to produce the rated output for • the operating mode used. Do not place the Commander II in repeater operation. This amplifier is not designed for un- • attended service. Extensive modification would be required for this type of service. -
Page 10: Front & Rear Layout
Front Panel Layout LOAD TUNE Control Multimeter Multimeter Control Multi-turn Piston Capacitor Selector Preset at Factory— Switch do not adjust, see pages 12 & 13 INPUT Power Ready STANDBY/ ON/OFF Control Light OPERATE Switch Switch Rear Panel Layout Voltage Selection RF In RF Out Jumper Cover... -
Page 11: Installation Preparation
60 Hz, depending on the final destination. No plug is supplied. Location of your Commander II requires that no equipment be placed directly above it, as air expelled from the tube exhaust can become quite hot. Allow at least 3 inches clearance on either side of the unit and between other equipment. -
Page 12: Operating Procedure
Re-peak the TUNE control for maximum output. Return the meter switch to the Ip position and the Commander II is ready for SSB or CW on the air operation. Normal SSB operation is indicated by plate current readings on voice peaks of approximately 1/3 to 1/2 of the CW key down value. -
Page 13: Operating Hints
Unless you have specified another band segment, the unit is factory tuned at 144.200, the na- tional SSB calling frequency. If you use the Commander II mainly for CW and SSB, and after having tuned the unit to your antenna, you will be able to QSY up or down the CW/SSB band segment without making any tuning adjustments. -
Page 14: Warranty, Service, And Returns
Package your unit properly. Palstar, Inc. is not responsible for mer- chandise damaged in shipment. Our service rate is $30 per hour (1/2 hr. minimum).
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