RF Technology Eclipse PA70 Operation And Maintenance Manual

Eclipse series

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Eclipse Series
RF Technology
rfinfo@rftechnology.com.au
January, 2004
PA70 Amplifier
Operation and Maintenance Manual
This manual is produced by RF Technology Pty Ltd
10/8 Leighton Place, Hornsby NSW 2077 Australia
Copyright © 1997 RF Technology

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Summary of Contents for RF Technology Eclipse PA70

  • Page 1 Eclipse Series RF Technology rfinfo@rftechnology.com.au January, 2004 PA70 Amplifier Operation and Maintenance Manual This manual is produced by RF Technology Pty Ltd 10/8 Leighton Place, Hornsby NSW 2077 Australia Copyright © 1997 RF Technology...
  • Page 2: Table Of Contents

    6.5 Transmit Duty cycle 6.6 Spurious and Harmonics 6.7 Maximum Heatsink Temperature 6.8 ALC Output 6.9 Mis-Match Protection Connectors 7.1 Antenna Connector 7.2 Power and I/O Connector 7.3 Test Connector Parts List Schematic Diagram __________________________________________________________________ RF Technology PA70 Page 2...
  • Page 3: Operating Instructions

    1 OPERATING INSTRUCTIONS Warning Changes or modifications not expressly approved by RF Technology could void your authority to operate this equipment. Specifications may vary from those given in this document in accordance with requirements of local authorities. RF Technology equipment is...
  • Page 4: Circuit Description

    RV1. This is normally set at half the rated output power. Warning Ensure that the output power setting complies with the equipment’s license requirements. Failure to do so may result in penalties being imposed by the licensing authority. PA70 Amplifier I/O Connections 25 Pin Connector Function Signal Pins Specification...
  • Page 5: Directional Coupler

    Over Temperature Protection Thermistor RT1 is mounted to the case of output transistor Q4. If the transistor case temperature rises above 90 degrees C the resistance of RT1 increases and Q2 is turned ON. __________________________________________________________________ RF Technology PA70 Page 5...
  • Page 6: Alignment Procedure

    Power Supply 13.8 Vdc at 15A with a load current meter or a test meter connected to measure the voltage between pins 2 and 5 of the PA70 test connector (0.1 Vdc = 1A) RF Power Meter and Load 50O 0-70 Watts VSWR <1.2:1...
  • Page 7 C21 to the middle of their adjustment range Set T70 to the Reflected power at Key the transmitter centre frequency the PA70 input/ and adjust C9 and channel T70 output C12 for minimum reflected power. As above Output power from...
  • Page 8: Specifications

    4RU (178mm) and the depth is 350mm. The amplifier is 95.25mm or three Eclipse modules wide. An extruded aluminium heat sink with vertical fins is used. The temperature rise is normally less than 30 degrees at 50 watts output. __________________________________________________________________ RF Technology PA70 Page 8...
  • Page 9: Front Indicators And Test Points

    Transmit Duty Cycle With Free Air Circulation 50 Watts - 100% to 40 deg. C 70 Watts - 50% to 40 deg. C With Fan Module 25-70 Watts - 100% to 50 deg. C __________________________________________________________________ RF Technology PA70 Page 9...
  • Page 10: Spurious And Harmonics

    Antenna Connector Type N Female mounted on the module rear panel Power and I/O Connector 25 Pin “D” Male mounted on the rear panel Test Connector 9 Pin “D” Female mounted on the front panel. __________________________________________________________________ RF Technology PA70 Page 10...
  • Page 11: Parts List

    PA70 PARTS LIST Ref. Description Part Number CAP 10N 10% 50V X7R RAD .2 46/2001/010N CAP 4N7 5% 400V MKT RAD.2 47/2040/04N7 CAP 10U 35V RAD ELECTRO 41/2001/010U CAP 10N 10% 50V X7R RAD.2 46/2001/010N CAP 1NO 5% 63V NPO SM1206...
  • Page 12 TRIMPOT 10K 1 TURN VERT 53/1020/010K IC VOLT REG 78LO8 TO92M 25/2040/78LO8 IC QUAD OP AMP TLC274 25/2050/274C PA70 LED Board Parts DIODE LED GREEN T1 3/4 21/1010/LEDG DIODE LED YELLOW T1 3/4 21/1010/LEDY DIODE LED RED T1 3/4 21/1010/LEDR...

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