AN/ARC-5 Handbook

  
NAVWEPS 16-30ARC5-501 
Handbook 
BENCH TEST 
And 
ALIGNMENT PROCEDURE 
RADIO EQUIPMENT 
AN/ARC-5 
PUBLISHED BY DIRECTION OF THE CHIEF OF THE BUREAU OF NAVAL WEAPONS 
1 October 1949  

 
TABLE OF CONTENTS 
 
 
SECTION I INTRODUCTION  
  1--1. PURPOSE OF BENCH MAINTENANCE PROCEDURE.  
  1--4. DESCRIPTION OF PROCEDURE.  
  1--6. USE OF THE PROCEDURE.  
  1--11. GENERAL DESCRIPTION OF AN/ARC-5 EQUIPMENT.  
  1--14. TEST EQUIPMENT.  
SECTION II PERFORMANCE CHECKS  
  2--1. GENERAL.  
  2--4. RECEIVER CHECKS.  
  2--9. BAND NOISE.  
  2--12. SENSITIVITY.  
  2--15. SELECTIVITY.  
  2--17. AVC CHARACTERISTICS.  
  2--21. TRANSMITTER CHECKS.  
  2--26. TRANSMITTER TRACKING AND LOADING....

Figure 1-1. AN/ARC-5 Equipment 
SECTION I INTRODUCTION 
 
1--1. PURPOSE OF BENCH MAINTENANCE PROCEDURE. 
1--2. The basic approach used in the development of this manual has been that of dividing all 
equipments into two categories: 
a. Components operating at or above a minimum standard of satisfactory performance. 
b. Defective or poorly performing components. 
1--3. Bench maintenance is reduced, first, to determining whether or not an equipment is operating 
satisfactorily, and, second, repairing the...

1--11. GENERAL DESCRIPTION OF AN/ARC-5 EQUIPMENT. 
 
1--12. The model AN/ARC-5 Aircraft Radio Communication Equipment (See figure 1--1.) is a multi-
channel radio transmitter and receiver for use on aircraft having a 22 to 30-volt d-c power supply. The 
receivers cover a frequency range of 190 kc to 9.1 mc in five independent units, each unit designed to 
be mounted interchangeably into the receiver racks. Racks are available for either two, and/or three-
unit installations, the receivers operating...

25 watts with CW emission.   

Figure 1-2. Receiver and Transmitter Block Diagrams 
1--14. TEST EQUIPMENT. 
  DESCRIPTION RECOMMENDED 
STANDARD ALTERNATE 1. Bench Test Set AN/GRM-1 AN/ARC-5 TEST BENCH 
HARNESS Stock No. RI6-R-
1047-25 2. Frequency Meter LM-13 LM Series 3. RF Signal 
Generator TS-413/U LP-5 4. Audio Signal 
Generator TS-382A/U HP-200C 5. Output Meter Weston 695 Daven OP-182 6. Voltmeter TS-352/U Simpson 260 7. VTVM TS-375/U RCP 662 or RCA Voltohmyst 
165 8. Oscilloscope TS 239/UP Dumont 241 9. Tube Tester Hickok 547...

Figure 1-3. Test Equipment Diagram 
I-104-A 
SWITCH 
POSITION TEST 
UNIT 
#7369 
METERS 
LABELLED CIRCUIT I-104-A 
READING  #7369 
READING 1 INPUT 
VOLTAGE Input voltage from primary 
source. 56 28 V DC 2 INPUT 
CURRENT Total input current from the 
primary source. 14-17 1.4-1.7 A 3 PLATE 
VOLTAGE Plate supply to 12SF7, 12SK7, 
and 12K8 tubes, and screen grid 
voltage on 12A6 tube. 46-50 230-250 V 4 SCREEN 
VOLTAGE Screen grid voltage to 12SF7, 
12SK7 and 12K8 tubes. 38-50 76-100 V 5 CATHODE 
CURRENT...

TEST SET COMPONENTS 
TYPE QTY DESIGNATION 
ARMY NAVY USE 1 Antenna A-61-A 
  Phantom antenna (LF, MF, HF 
radio transmitter) 1 ANT. Relay 
Unit BC-442-A RE-2/ARC-5 Antenna relay (LF, MF, HF 
radio transmitter) 1 Control Unit 
  C-29/ARC-5 Transmitter control (or C-
30A/ARC-5) 1   
  C-43/ARC-5 Receiver control 3   MC-237 
  Local tuning crank 1 Cord CD-525 
  DC Outlet to modulator 2  CD-527 
  6-Conductor 1  CD-528 
  5-Conductor 2  CD-531 
  DC Outlet to receiver rack (2-
Conductor) 2  CD-532...