DRAKE SPR-4 Manuals

DRAKE SPR-4 Manuals

Manuals and User Guides for DRAKE SPR-4. We have 2 DRAKE SPR-4 manuals available for free PDF download: Technical Manual

DRAKE SPR-4 Technical Manual

DRAKE SPR-4 Technical Manual (70 pages)

communications

Brand: DRAKE | Category: Receiver | Size: 17 MB

Table of Contents

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DRAKE SPR-4 Technical Manual

DRAKE SPR-4 Technical Manual (66 pages)

Communications Receiver

Brand: DRAKE | Category: Receiver | Size: 13 MB

Table of Contents

Table of Contents
2
Features
3
Specifications
3
Viewing Angle Options
3
Front Pane1 Operating Controls
4
Rear Controls & Connections
5
Block Diagram
6
Installation
7
- Unpacking
  7
- Location
  7
- Power Requirements
  7
Antennas
7
Top Alignment Adjustment Points
7
Speakers
8
Headphone Operation
8
Viewing Angle Options
8
Rear Controls & Connectors
8
Bottom Alignment Adjustment Points
8
S-NB Circuit Board
12
Operation
13
- Operating Controls
  13
S-NB Schematic Diagram
13
- Dia1 Calibration
  14
Circuit Board Installation
14
Principles of Operation
16
- Loop Amplifier
  16
- R.f. Amplifier
  16
- First Mixer
  16
Premixer
16
- Circuit Board
  16
Second Mixer
17
- 1. F. System
  17
Detection Systems
17
Audio Amplifier
17
Schematic Diagram
17
- AVC System
  18
Meter
18
Circuit Board Installation
18
Pictorial Wiring Diagram
19
Circuit Board
20
- Alignm Ent
  21
- Removing Cover
  21
- Alignment Instructions
  21
Schematic Diagram
21
- Trouble Shooting
  21
Bottom View - Circuit Board
22
Loop Amplifier Circuit Board
24
RF Amplifier Circuit Board
25
Accessories
26
- Crystal Calibrator
  26
- S-NB Noise Blanker
  26
- Radio Teletype Adaptor
  28
- Premixer Circuit Board
  28
- Premixer Output Circuit Board
  29
- SCC-4 Crystal Calibrator
  29
- Transceive Adaptor
  30
- 1St Mixer Circuit Board
  30
- 2Nd Mixer Circuit Board
  31
- 1St if Amplifier Circuit Board
  32
- AVC Alterations
  33
- 2Nd if Amplifier Circuit Board
  33
- S -Meter Circuit Board
  34
- Notch Filter Circuit Board
  35
- Service Data on Accessories
  36
Circuit Board
36
- 50 Khz Filter Circuit Board
  36
Calibration Connection to SCC4
37
Schematic Diagram
37
- BF0 Circuit Board
  37
- AM Detector Circuit Board
  38
- Audio Amplifier Circuit Board
  39
- Power Supply Circuit Board
  40
- Pictorial Wiring Diagram
  44
Transistor Lead Configuration
51

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