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RA 1217
Racal Acoustics RA 1217 Manuals
Manuals and User Guides for Racal Acoustics RA 1217. We have
1
Racal Acoustics RA 1217 manual available for free PDF download: Operator's Manual
Racal Acoustics RA 1217 Operator's Manual (48 pages)
H.F. Communications receiver
Brand:
Racal Acoustics
| Category:
Radio
| Size: 0.73 MB
Table of Contents
Adjustments
2
Servicing
2
Switch off
2
First Aid
3
Contents
5
List of Illustrations
7
Technical Specification
8
General Description
14
Introduction
14
Technical Information
14
Ancillary Equipment
14
General Information
15
Tuning
15
Audio Outputs
16
Construction
16
Power Supply
16
Handbook Notes
17
Circuit References
17
Control References
17
Modifications
17
Installation
18
Removal of Covers
18
Dust Covers
18
Module Covers
18
Rear Panel Connections
19
R.F. Input
19
12-Way Socket
19
Terminal Block
20
Coaxial Outlets
20
Preparation for Use
22
General Inspection
22
A.C./D.C. Switch
22
Voltage Selector Switch
22
Power Supply Connection
23
Connections to Ancillary Units
23
Phones
23
Connecting the Synthesizer
24
L.F. Adaptor Connections
25
I.S.B. Adaptor Connections
25
Rear Panel Sockets
27
Concise Data
27
External Inputs
27
External Outputs
27
Operating Instructions
28
Functions of Controls
28
System Switch
28
R.F. Range Control
29
R.F. Tune Control
29
Calibration
31
Khz Readout Calibration
31
B.F.O. Calibration
32
Receiver Tuning
32
Single Sideband Reception
33
Operating with a Synthesizer
33
Additional Operating Information
34
Operating with an L.F. Adaptor
34
Receiving down
34
Brief Technical Description
35
Wadley System
35
Drift Cancellation
35
Signal Path
36
Harmonic Mixer Path
36
Second Mixer
37
Kilehertz Tuning
37
Frequency Inversion
38
L.F. Adaptor Unit
38
Panoramic Adaptor Unit
38
Overall Tuning Example
39
Final I.F. Stages
40
A.G.C. Circuits
40
R.F. Gain Control
40
Detector Circuits
40
B.F.O. Circuits
41
Audio Stages
41
I.F. Converters
42
Power Supply Modules
42
Initial Fault Location
43
Preliminary Checks
43
General Diagnosis
43
Power Check
44
I.F. Module Check
44
Front End Check
44
RF HT Check
45
A.G.C. Fault
45
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