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Related Manuals for Palstar COMMANDER VHF-144
Summary of Contents for Palstar COMMANDER VHF-144
- Page 1 COMMANDER VHF-144 2 METER 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 Safety Warnings and Precautions Front & Rear Layout Installation Preparation Operating Procedure Operating Hints Typical Operating Conditions Table Warranty, Service, and Returns HV Power Supply Schematic AC Mains & Step-Start Schematic Control &... -
Page 3: Introduction
INTRODUCTION The Commander VHF-144 is a grounded grid AB2 linear power amplifier that oper- ates 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 VHF-144 Inside Layout T/R Relay Ball Filament High Voltage High Voltage Board Bearing Transformer Transformer Interlock Cooling Switch AC Input Step/Start Blower Socket 3CPX800A7 Triode Tube Load Tuning Input Tuning High Voltage Duel Meter Capacitor Piston Capacitor Board Control... -
Page 5: Specifications
Specifications Commander VHF-144 2 Meter VHF Linear Power Amplifier Frequency Range: 144 to 148 MHz. • Modes: USB, LSB, RTTY, FM, CW. • Power Requirements: 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 VHF-144 from its shipping carton making sure there is no damage evident from shipping. If there is any damage, notify the delivering shipper imme- diately, fully describing the damage. Do not destroy the packing material, since it may be reusable later, should you require factory service, or need to transport the Amplifier for any other reason. -
Page 7: Front & Rear Layout
Front Panel Layout LOAD TUNE Control Multimeter: Multimeter: Control Multi-turn Piston Capacitor Relative Plate Current/ Power Ready Preset at Factory Output/Grid Plate Voltage Light Current STANDBY/ ON/OFF OPERATE Switch INPUT Switch Control Rear Panel Layout (PTT) Key AC Power RF Out Socket Ground Lug Bypass SWR... -
Page 8: Installation Preparation
3 inches clearance on the side of the unit and between other equipment. To switch from transmit to receive the Commander VHF-144 requires a contact closure or keying circuit capable of sinking 15ma of positive voltage (12 VDC open circuit) to ground. -
Page 9: Operating Procedure
Re-peak the TUNE control for maximum output at 600ma of plate current. The Commander VHF-144 is ready for SSB or CW on the air operation. Normal SSB opera- tion is indicated by plate current readings on voice peaks of approximately 1/3 to 1/2 of the CW key down value. -
Page 10: Operating Hints
OPERATING HINTS The Commander VHF-144 TUNE control is a high "Q" piston-type tuning capacitor with a 6:1 ratio vernier reduction drive. This control requires about 15 revolutions to tune the unit from 144 to 148 MHz. Unless you have specified another band segment, the unit is factory tuned at 144.200, the na- tional SSB calling frequency. -
Page 11: Warranty, Service, And Returns
(the “Warranty Period”). Palstar Inc.’s obligation under this warranty is lim- ited to repair or replacement of the product at it’s option at the Palstar factory in Piqua, OH. This warranty is effective only when the product is returned to the factory with all transpor- tation charges prepaid and examination of the product discloses, in Palstar’s judgment, to have... -
Page 12: Hv Power Supply Schematic
Commander VHF-144 HV Power Supply... -
Page 15: Rf Deck Schematic
RF Deck VHF-144... -
Page 16: T/R Relay Board Schematic
Commander VHF-144 T/R Relay Board... -
Page 17: Voltage Doubler Power Supply Schematic
Commander VHF-144 Voltage Doubler Power Supply Board... -
Page 18: Rf Deck
RF Deck 3CPX800A7 RF Plate Choke Triode Tube Plate Capacitor 120pf/7.7kv Load Tuning Input Tuning Capacitor Piston Capacitor... -
Page 19: Dual Meters
Dual Meters Grid Current: Scale Grid Current: Scale 0-60ma Single Tube 0-600ma Single Tube 0-120ma Two Tubes 0-1200ma Two Tubes 0-180ma Three Tubes Bottom 0-1800ma Three Tubes Bottom... -
Page 20: Meter Board
Meter Board Cathode Fuse... -
Page 21: Step-Start Board
Step-Start Board AC Main Fuse (20A) x 2 Interlock Step/Start Relays x 4... -
Page 22: Power Supply
Power Supply 470uF Capacitor 450 vdc x 8 RF Output HV Sense... - Page 24 Palstar Incorporated 9676 N. Looney Rd., Piqua, OH 45356 USA Customer Service and Sales Telephone: 1-800-773-7931 Fax: 1-937-773-8003 Email: info@palstar.com Version 1.0 2010.03.29...
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