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Manuals
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Hammarlund Manuals
Receiver
HQ-215
Instruction and service information
Hammarlund HQ-215 Instruction And Service Information
Communications receiver
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User manual
(40 pages)
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Contents
Table of Contents
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Table of Contents
Table of Contents
Introduction
1 Installation
Unpacking
Receiver Connections
Rear Connections
Typical Antenna Installations
Attaching Cable to Phono
Installation of Ground
Interconnections for Use with Transmitter
Transmitter Interconnections
2 Operation
General
Operation of Controls
Calibration
SSB Tuning
Front View of
CW Tuning
AM Tuning
RTTY Tuning
Use of "S" Meter
Determining Operating Frequency
Additional Frequency Coverage
Crystal Location
3 Theory of Operation
3.1 General
RF Amplifier and High Frequency Oscillator
3.3 First Mixer and Bandpass if
Second Mixer and Variable Frequency Oscillator
455 Khz IF, Detector
3.6 Audio Circuits
BFO and CW Oscillator Circuits
AGC and "S" Meter Circuitry
Rejection Filter
Mute Circuitry
Power Supply
4 Alignment and Service
General
Trouble Analysis
Voltage Measurements
Resistance Measurements
IF Alignment
Bottom View of HQ-2L5
Oscillator Adjustment
RF Module with Bandswitch
RF Alignment
Module Removal
Re-Stringing Dial Drive
5 Specifications
Frequency Coverage
Receiver Specifications
Diode Complement
Bfo Crystal Specifications
6 Parts List
Semiconductor Complement
Transistor Complement
7 Ray Views and Diagrams
X-Ray View, Slot Filter
X-Ray View, Power Supply
X-Ray View, VFO Module
X-Ray View, Main Module
Block Diagram
Schematic Diagram
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