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Manuals
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Hammarlund Manuals
Transmitter
HX50
Service manual
Hammarlund HX50 Service Manual
Hf transmitter
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Also See for HX50
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Technical description and operating instructions
(45 pages)
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Table Of Contents
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Contents
Table of Contents
Troubleshooting
Bookmarks
Table of Contents
Introduction
Description
Scope of Operation
T.V.I. Suppression
Installation
Unpacking
Location
Power Source
RF Output Connector
Receiver Antenna Connector
Station Control Terminal Board
Accessory Relay Contacts
Push-To-Talk
External VFO Connector
Connection Points at Rear of Chassis
Typical Station Control
Operating Controls
Function
Crystal - VFO
Meter
Band Selector
Frequency
AF Level
RF Drive
PA Load
VOX Sensitivity
VOX Delay
Anti-Trip Sensitivity
Tuning Procedure
Initial Control Settings
Approximate Settings
CW Tuning
SSB Tuning
Basic Operation Theory
Basic Operating Principles
General Description
80 Meter Operation
Transmitter/Exciter Block Diagram
CW Operation
AM Operation
Crystal Operation
Operation with External VFO
Heterodyne Frequencies
Crystal Frequencies
Service Data
Chassis Removal
Tube and Dial Lamp Replacement
Top View of Chassis, Primary Components
Bottom View of Chassis, Primary Compartments
Troubleshooting Chart
Restringing the Dial Pointer and VFO Drive Mechanism
Restringing the Band Selector Mechanism
Restringing the VFO Drive Mechanism
Alignment Procedure
Equipment Required
Bias Adjustment
Alignment of Carrier Oscillator Stage
Heterodyne Oscillator Alignment Chart
RF Alignment of the First Mixer Stage
VFO Calibration Alignment
Neutralization of the Final Amplifier
Final Alignment Procedure
Bottom View of Plate R F Coil Assembly
R.F. Coil Position VS Schematic Designation
Parts List
Miscellaneous Parts
Voltage Chart
Resistance Chart
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