Valcom AS-3772B/U Technical Manual
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Valcom AS-3772B/U Technical Manual

Valcom AS-3772B/U Technical Manual

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TECHNICAL MANUAL
OPERATION AND INSTALLATION
INSTRUCTIONS
ANTENNA
AS-3772B/U
Document No: VTM-91-772/C
Valcom Manufacturing Group, Inc.
175 Southgate Drive, P.O.Box 603, Guelph, Ontario, Canada N1H 6L3 Tel: 519-824-3220 Fax: 519-824-3411
Web Site: www.valcom-guelph.com Email: enquiries@valcom-guelph.com

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Summary of Contents for Valcom AS-3772B/U

  • Page 1 TECHNICAL MANUAL OPERATION AND INSTALLATION INSTRUCTIONS ANTENNA AS-3772B/U Document No: VTM-91-772/C Valcom Manufacturing Group, Inc. 175 Southgate Drive, P.O.Box 603, Guelph, Ontario, Canada N1H 6L3 Tel: 519-824-3220 Fax: 519-824-3411 Web Site: www.valcom-guelph.com Email: enquiries@valcom-guelph.com...
  • Page 2 VTM-91-772/C RECORD OF CHANGES CHANGE DATE TITLE OF BRIEF ENTERED NUMBER DESCRIPTION Mar 2004 General Formatting Edits Jason Soper Aug 2007 Added Maintenance Section Jason Soper Nov 2013 Various minor improvements Jason Soper...

  • Page 3: Table Of Contents

    VTM-91-772/C TABLE OF CONTENTS Section Page GENERAL INFORMATION AND SAFETY PRECAUTIONS General Safety Precautions ..........1 Specific Warnings .
  • Page 4 VTM-91-772/C LIST OF ILLUSTRATIONS Figure Page Installation Data ........... 9 LIST OF TABLES Table Page...

  • Page 5: General Information And Safety Precautions

    VTM-91-772/C SECTION 1 GENERAL INFORMATION AND SAFETY PRECAUTIONS 1-1. GENERAL SAFETY PRECAUTIONS The following general safety precautions are not related to any specific procedures and therefore do not appear elsewhere in this publication. These are recommended precautions that personnel must understand and apply during many phases of operation and maintenance.

  • Page 6: Introduction

    VTM-91-772/C 1-3. INTRODUCTION 1-3.1 Purpose. This manual provides general information on the AS-3772B/U, as well as an operational and functional description of the antenna and installation data. Information in this manual will assist in installing and operating the antenna. 1-3.2 Scope. This technical manual is provided to aid in the operation and installation of the antenna.
  • Page 7 VTM-91-772/C Table 1-1. Reference Data PARAMETER SPECIFICATION NOMENCLATURE ANTENNA AS-3772B/U MANUFACTURER VALCOM MANUFACTURING GROUP, INC. 35736 FREQUENCY RANGE TRANSMITTING: 2 TO 30 MHZ IMPEDANCE VARIES POLARIZATION VERTICAL POWER CAPABILITY 5 KW SINGLE ANTENNA RADIATION PATTERN OMNIDIRECTIONAL TEMPERATURE OPERATING: -54°C TO +65°C NON OPERATING: -62°C TO +71°C...
  • Page 8 Table 1-2. Equipment, Accessories and Documents Supplied OVERALL DIMENSIONS (INCHES) WEIGHT NOMENCLATURE CRATED UNCRATED (POUNDS) UNCRATED HEIGHT HEIGHT ANTENNA 13.00 AS-3772B/U (BASE) TECHNICAL MANUAL FOR AS-3772B/U ANTENNA VTM-91-770 SILCONE SEALANT MS24693-C140 3/8-16 x 0.75 L FLAT HD SCREW MIL-A-907E ANTI-...

  • Page 9: Operation

    VTM-91-772/C SECTION 2 OPERATION 2-1. INTRODUCTION This chapter provides operating instructions for the antenna. 2-2. CONTROLS AND INDICATORS The antenna contains no controls or indicators. 2-3. OPERATING PROCEDURES 2-3.1 Operator Turn-On. No operator turn-on procedures apply since no power is required to operate the antenna.

  • Page 10: Functional Description

    VTM-91-772/C SECTION 3 FUNCTIONAL DESCRIPTION 3-1. INTRODUCTION This chapter provides the functional description of the antenna. 3-2. OVERALL LEVEL The antenna is a base mounted, high-power antenna which provides omnidirectional coverage for general purpose communications reception and transmission from 2 to 30 MHz when used in either a twin whip and tuner configuration or single whip and tuner configuration.

  • Page 11: Installation

    4-1. SITE INFORMATION Valcom's AS-3772B/U HF Antenna is designed primarily for shipboard installation. The antenna can also be used at shore installations. The antenna should be installed in a non-obstructed environment, clear from any contiguous structures, such as masts, bulkheads, or other metal objects.

  • Page 12: Installation Checkout

    VTM-91-772/C b. Before assembling the two sections together, the sleeve at top of the bottom section must be coated with a thin layer of electrically conducting nickel-based anti-seize compound MIL-A- 907E (supplied). A small dab of anti-seize in each of the eight threaded holes will assist with installing the screws later.
  • Page 13 VTM-91-772/C 2.0 IN (5.1 CM) 3/8-16 UNC x " LONG SST CSK SCREW 4 PLACES AROUND CIRCUMFERENCE COVER WITH RTV AFTER INSTALLING 3/8-16 UNC x " LONG SST CSK SCREW 4 PLACES AROUND CIRCUMFERENCE VIEW A COVER WITH RTV AFTER INSTALLING - VIEW A - 3X 1/4-20 UNC-2A SST BOLT FEEDPOINT(S)

  • Page 14: Maintenance

    VTM-91-772/C SECTION 5 MAINTENANCE 5-1. SCHEDULED MAINTENANCE The antenna is virtually maintenance free. The external finish is a silicone alkyd paint. The minimum finish life before showing signs of deterioration should be at least six years under normal climate conditions. When used in salt-water environments, it is recommended to wash the antenna base with fresh water to remove any build-up of dried salt residue.
  • Page 15 VTM-91-772/C 5-2.2 Cosmetic Repairs The antenna has been designed to meet and tested to pass Naval Shock and Vibration requirements (MIL-S-901 and MIL-STD-167 respectively). Under and beyond normal expected environmental stresses onboard ships, this antenna will not suffer mechanical or electrical failure.

  • Page 16: Quick Reference Data

    SECTION 6 QUICK REFERENCE DATA GENERAL Manufacturer’s contact information can be found in Section 6-2. MANUFACTURER'S ADDRESS Postal address: Shipping address: Valcom Manufacturing Group, Inc Valcom Manufacturing Group, Inc P.O. Box 603 175 Southgate Drive Guelph, Ontario Guelph, Ontario Canada...

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