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TABLE OF CONTENTS PAGE

CHAPTER

GENERAL DESCRIPTION

1.1 1.2 1.3 1.4 1.5

. . .

1-1

h

MAIN I'RAME AND PRESCLJ-lC'I'OKM0DTJLE . . . .

6-1

Scope of Instruction

Manual . . . . . . . . Description . . . . . . . Purpose and [Jses. . . . . Technical Specifications . . Accessories and Spares . .

INSTALLATION

. . . . . . 2-1 2-1

. . . . . . . .

3-1

OPERATION

6.1 General . . . . . . . 6.2 Frcquerlcy MHz Switches C'heck . . . . . . . . 6.3 Stccring Voltngc Chccks . 6.4 Prcsclcctor and R F Gain ControlTcst . . . . . 6.5 VFO Tracking Alimrnent 6.6 VHF F i l t ~ rA s ~ m b l y Alignment . . . . . . 6.7 Circuit Diagramsand Pnrts Ldsts . . . . . . . .

1-1 1-1 1-1 1-1 1-3

2. I General . . . . . . . . 2.2 Unpacking and Inspection . . . . . . . . . . 2.3 Site Sclcction . . . . . . 2.4 Antennas and Transmission Lines . . . . . . . . . 2.5 Installation . . . . . . . 2.6 Connections . . . . . .

2-1 2-1 2-1 2-2 2-4

7.1 Gcncral . . . . . . . 7.2 Detailed Theory of Operation . . . . . . 7.3 Perform;rnc~eC'hccks . . 7.4 Fault Analysis . . . . . 7.5 Alignment Procedures . . 7.6 Circuit Diaprarns and Pnrts Lists . . . . . . . .

3.1 General . . . . . . . . 3-1 3.2 Operating Controls, Indicators, and Connectors . . 3-1 3.3 Operating Instructions . . . 3-4

THEORY OF OPERATION

. .

4.1 General . . . . . . 4.2 Description . . . . . 4.3 KF-505A Rcceivcr Block Diagram Theory . . . 4.4 Rcceivcr Module . . . 4.5 Synthesizer Module . .

. . 4-1 . . 4-1

MAINTENANCE

.

(7-1

.

0-1 6-3

.

. .

6-3 6-5

.

6-6

.

6-7

.

7-1

.

. .

7-1 7-4 7-5 7-1 1

.

7-1 5

.

8-1

. .

8-1 8-7 8-8 8-1 (3

.

8-2 1

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4-1 8.1 General . . . . . . . 8.2 Detailed Theory of Opcration . . . . . . 8.3 Perf0rm;incc Checks . . 8.4 Fault Analysis . . . . . 8.5 Alignment Procedures . . 8.6 Circuit Diagrams and Parts Lists . . . . . . . .

. . 4-1 . . 4-3 . .

4-7

. . . . . .

5-1

Gcncral . . . . . . . . 5-1 Preventative Maintenance . 5- 1 Pcrformancc Test . . . . 5-1 Fault Analysis Table . . . 5-5 5.5 Modules Removal . . . . 5-7 5.6 Module Replacement . . . 5-7 5.7 Printed Circuit Assemblies . 5-8 5.1 5.2 5.3 5.4

PAGE

CHAPTER

9

POWER SUPPLY MODULE

.

.

. .

9.1 Gcnernl . . . . . . . 9.2 Theory of 0per;ltion . . 9.3 Tcst and Alipnmcnt Proccdurcs . . . . . . 9.4 Fault Analysis . . . . . 9.5 Circuit Diagram and Parts List . . . . . . . . .

9-1

.

9- 1

.

9- 1

. .

9-4 9-6

.

9-7

TABLE OF CONTENTS LIST OF ILLUSTRATIONS

TABLE OF CONTENTS (Cont.)

PAGE

CHAPTER

10

FREQUENCY STANDARD MODULE . . . . . . . 10.1 10.2 10.3

. .

10-1

General . . . . . . . Theory of Operation . . Test and Alignment . . .

10-1 10-1 10-1

PAGE

CHAPTER

10.4 10.5

Fault Analysis Circuit Diagram and . Parts List . . . . .

. . . .

10-3 10-5

APPENDIX . . . . . . . . . A-1 ACCESSORIES . . . . . . . B-1

LIST OF ILLUSTRATIONS FIGURE

1.1

2.1 2.2 2.3

3.1 4.1 4.2

4.3 5.1 5.2 6.1 6.2 6.3 6.4 7.1 7.2

7.3 7.4

7.5 I1

PAGE

Top and End View of RF-5O5A Receiver . . . . . . . . . Typical Doublet Antenna Installation . . . . . . . . RF-505A Rack Installation . . Typical Antenna and Terminal Unit Connections . . . . . RF-505A Front Panel . . . . RF-50SA Receiver Block Diagram . . . . . . . . . RF-505A Rccciver Module Block Diagram . . . . . . RF-505A Synthesizer Module Block Diagram . . . . . . RF-505A Top View (Covcr Removed) . . . . . . . . RF-505A Shown With an Assembly Extended for Testing . RF-505A Receiver Main Frarne CircuitDiagram . . . . . . Preselector Module Circuit Diagram . . . . . . . . . IF. Gain Control Assembly Circuit Diagram . . . . . . VHF Filter Assembly Circuit Diagram . . . . . . . . . Front End Assembly Test Set-up . . . . . . . . . . Receiver Modulc Circuit Diagram . . . . . . . . . Front End Assembly Circuit Diagram . . . . . . . . . Filter Assembly Circuit Diagram . . . . . . . . . De tector/AGC Assembly Circuit Diagram . . . . . .

FIGURE

7.6 8.1 8.2 8.3 8.4 8.5 8.6 8.7 8.8

8.9 9.1

9.2 9.3 9.4 9.5 9.6

10.1 10.2 10.3

PAGE

Speaker Driver and Squelch Gate Assembly Circuit Diagram . . . Synthesizer Module Circuit Diagram . . . . . . . . . . HF VCO Assembly Circuit Diagram . . . . . . . . . . HF Divider Assembly Circuit Diagram . . . . . . . . . . VHF VCO Assembly Circuit Diagram . . . . . . . . . . VHF Divider Assembly Circuit Diagram . . . . . . . . . . Spectrum Generator Assembly Circuit Diagram . . . . . . . Second L.O. Generator Assembly Circuit Diagram . . . . . . Translator Assembly Circuit Diagram . . . . . . . . . . 14 MHz Up-Mixcr and VFO AssemblyCircuitDiagram . . . . Power Supply Block Diagram . . Power Supply Waveforms . . . Fabricated Test Circuit . . . . Component Locations, Top View . . . . . . . . . . . Component Locations, Side View . . . . . . . . . . . Power Supply Module Circuit Diagram . . . . . . . . . . Frequency Standard Module 724-1600. . . . . . . . . . Terminal E4 Waveform . . . . Frequency Standard Module Circuit Diagram . . . .

7-25 8-23 8-25 8-27 8-29

8-31

8-33 8-35 8-37 8-39 9-2 9-4 9-6 9-7 9-7 9-1 1 10-1 10-3 10-7

LIST OF ILLUSTRATIONS

LIST OF ILLUSTRATIONS (Cont.) PAGE

FIGURE

FIGURE

PAGE

APPENDIX

1 2 3 4

Circuit Diagrams for IC-00 10 and IC-001 I . . . . . . Circuit Diagrams for 1C-0013 and IC-00 14 . . . . . . Circuit Diagrams for IC-00 16 and IC-00 1 7 . . . . . . Circuit Diagrams for IC-00 18 and IC-00 19 . . . . . .

. . . . . . . .

5 A-2 6 A-2 7 A-3

8 A-3 9

Circuit Diagrams for IC-0020 and IC-0023 . . . . . . . . Circuit Diagrams for IC-0024, 1C-0025, and IC-0030 . . . . . Circuit Diagrams for IC-0035 and IC-0036 . . . . . . . . Circuit Diagrams for IC-0037 and IC-0051 . . . . . . . . Circuit Diagram for IC-0052 . .

A-4

A-5 A-6 A-7 A-8

ACCESSORIES 1

RF-506 Noise Blanker Assembly Component Locations and Circuit Diagram . . . . . . . . . . B3

3

RF-520 Muting Conversion Module Component Locations and Circuit Diagrams . . . . . . . . . . E-3

1

RF-520 Muting Conversion Module Installation . . . . . . E-1

1

RF-522 Mounted on a RF-505 Receiver . . . . . . . F-2

2

Typical Keyline Installation . . . . . . . . . E-2

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