Valcom AS-3226C/URC Operation And Installation Instructions Manual

TECHNICAL MANUAL

VTM-07-007

OPERATION AND INSTALLATION

INSTRUCTIONS

AS-3226C/URC

VHF ANTENNA

AS-3226C/URC VTM-07-007

REVISION SHEET

Revision Description Date

- - Original Issue - November 13, 2007

Errors in this publication can be reported to the Manufacturer.

Refer to Section 6 for contact information and address

175 Southgate Drive, P.O. Box 603, Guelph, Ontario, Canada N1H 6L3 Tel: [phone] Fax: [phone]

Web Site: www.valcom-guelph.com

attention to the Engineering Department.

Valcom Manufacturing Group, Inc.

E-mail: [e-mail]

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Valcom Manufacturing Group, Inc.

AS-3226C/URC VTM-07-007

TABLE OF CONTENTS

Section

Page

1 GENERAL INFORMATION AND SAFETY PRECAUTIONS ............... 1

1-1 Safety Precautions ................................................ 1

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

1-3 Equipment Description ............................................ 1

1-4 Relationship to Other Equipment .................................... 1

1-5 Reference Data .................................................. 1

1-6 Equipment and Documents Supplied ................................. 1

1-7 Equipment and Publications Required But Not Supplied .................. 1

2 OPERATION ........................................................ 5

2-1 General ........................................................ 5

3 FUNCTIONAL DESCRIPTION ......................................... 6

3-1 Functional Description .............................................. 6

a. Electrical Balance .......................................... 6

b. Radiation Patterns .......................................... 6

4 SCHEDULED MAINTENANCE ........................................ 7

4-1 Introduction ..................................................... 7

4-2 Scheduled Maintenance Action Index ................................ 7

4-3 Preventive Maintenance Procedures .................................. 7

4-4 Scheduled Performance Tests ....................................... 8

a. Safety Precautions .......................................... 8

b. Tools and Test Equipment ................................... 8

c. Title of Test ............................................... 8

d. Minimum Rating of Technician ............................... 8

e. VSWR Test Setup .......................................... 8

f. Procedures ................................................ 9

g. Test Values ............................................... 9

h. Corrective Actions ......................................... 9

5 TROUBLESHOOTING ............................................... 10

5-1 Introduction .................................................... 10

5-2 Troubleshooting Index ........................................... 10

5-3 Maintenance Turn-On Procedures .................................. 10

5-4 Troubleshooting Procedures ....................................... 10

6 CORRECTIVE MAINTENANCE ...................................... 12

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Valcom Manufacturing Group, Inc.

AS-3226C/URC VTM-07-007

6-1 Introduction .................................................... 12

6-2 Adjustments and Alignment ....................................... 12

6-3 Repair ........................................................ 12

7 PARTS LIST ........................................................ 13

7-1 Introduction .................................................... 13

a. List of Parts ............................................. 13

b. List of Manufacturers ...................................... 13

8 INSTALLATION .................................................... 14

8-1 Site Information ................................................ 14

8-2 Tools and Materials Required ...................................... 14

8-3 Unpacking and Repacking ........................................ 14

8-4 Foundation .................................................... 14

8-5 Input Requirements .............................................. 14

8-6 Installation Procedures ........................................... 14

8-7 Installation Checkout ............................................ 14

LIST OF FIGURES

Figure Page

1-1 VHF Antenna AS-3226C/URC ...................................... 2

3-1 Balancing Transformer Arrangement ................................. 6

4-1 VSWR Test Setup ................................................ 9

8-1 Installation Data ................................................ 15

LIST OF TABLES

Table Page

1-1 Reference Data ........................................................ 3

1-2 Equipment and Documents Supplied ....................................... 3

1-3 Equipment and Publications Required But Not Supplied ........................ 4

1-4 Field and Factory Changes ............................................... 4

4-1 Scheduled Maintenance Action Index ...................................... 8

5-1 Troubleshooting Index ................................................. 10

5-2 Troubleshooting Procedures ............................................. 11

7-1 List of Parts .......................................................... 13

7-2 List of Manufacturers .................................................. 13

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Valcom Manufacturing Group, Inc.

AS-3226C/URC VTM-07-007

SECTION 1

GENERAL INFORMATION AND SAFETY PRECAUTIONS

1-1. SAFETY PRECAUTIONS. When working in the vicinity of VHF Antenna AS-

3226C/URC, make sure the antenna is de-energized in accordance with the WARNING in
paragraphs 4-3 and 4-4, and when testing the antenna, make sure the test equipment is properly
grounded in accordance with WARNING in paragraph 4-4.

1-2. INTRODUCTION. This manual provides general information, operating and functional
descriptions, maintenance and troubleshooting instructions, parts list data, and installation data
for VHF Antenna AS-3226C/URC.

1-3. EQUIPMENT DESCRIPTION. The AS-3226C/URC VHF Antenna (see figure 1-1) is a
general purpose, high performance, reliable, vertically polarized, broadband dipole covering the
30 to 108 MHz frequency range. It is designed for use under the severe environmental conditions
encountered aboard naval vessels. It is used for either receiving or transmitting Very High
Frequency signals. The antenna is a base-mounted light-weight, single piece fiberglass vertical
dipole.

1-4. RELATIONSHIP TO OTHER EQUIPMENT. The AS-3226C/URC VHF Antenna
interfaces with the ship's VHF receiving and transmitting equipment.

1-5. REFERENCE DATA. Table 1-1 lists the reference data for the antenna.

1-6. EQUIPMENT AND DOCUMENTS SUPPLIED. Table 1-2 lists the equipment and

documents supplied.

1-7. EQUIPMENT AND PUBLICATIONS REQUIRED BUT NOT SUPPLIED. Table 1-3
lists the equipment and publications required but not supplied.

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Valcom Manufacturing Group, Inc.

AS-3226C/URC VTM-07-007

Figure 1-1 VHF Antenna AS-3226C/URC

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Valcom Manufacturing Group, Inc.