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Related Manuals for Valcom VBBA 2-30
Summary of Contents for Valcom VBBA 2-30
- Page 1 TECHNICAL MANUAL VTM-98006F OPERATION AND INSTALLATION INSTRUCTIONS HF BROADBAND ANTENNA MODEL VBBA 2-30 Valcom Limited 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-98006F RECORD OF CHANGES CHANGE NUMBER DATE TITLE OF BRIEF ENTERED BY DESCRIPTION Jan 2001 - Original Issue H.D. - Added additional cable and - A - May 2002 connector information J.S. - Fixed minor typing errors - Deleted reference to LC-N type and 7/8"...
- Page 3 VTM-98006F Table of Contents Section Page GENERAL INFORMATION AND SAFETY PRECAUTIONS ....1 General Safety Precautions ......... . 1 Specific Warnings .
- Page 4 Antenna VBBA 2-30 ........
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Page 5: General Information And Safety Precautions
VTM-98006F SECTION 1 GENERAL INFORMATION AND SAFETY PRECAUTIONS 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
INTRODUCTION. This manual provides general information, operating and functional description, and installation data for Valcom's VBBA 2-30 broadband antenna. EQUIPMENT DESCRIPTION. The VBBA 2-30 Broadband Antenna (see figure 1-1) is a whip antenna for general use with HF communications equipment. The antenna provides vertically polarized, omnidirectional azimuth radiation from 2 to 30 MHz when the antenna is operated with a HF transceiver. -
Page 7: Antenna Vbba 2-30
VTM-98006F Figure 1-1 Antenna VBBA 2-30... - Page 8 VTM-98006F Table 1-1 Reference Data PARAMETER SPECIFICATION Nomenclature Antenna, VBBA 2-30 Manufacturer 35736 Frequency Range 2-30 MHz VSWR 2.0:1 Maximum Polarization Vertical Power Rating 3 kW Azimuth Coverage Omnidirectional Input Connection 7/8 EIA Flange (see Note 1) Temperature -50ºC to 65ºC (-60ºF to 150ºF)
- Page 9 (POUNDS) CRATED UNCRATED UNCRATED HEIGHT HEIGHT ANTENNA 13.0 VBBA 2-30 Base P/N VD-97-00061-1 TECHNICAL MANUAL FOR VBBA 2-30 ANTENNA VTM-98006 DC-4 ELECTRICAL INSULATING COMPOUND MS24693-C140 3/8-16 X .75 L FLAT HD SCREW MIL-T-22361 ANTI-SEIZE COMPOUND GROUND STRAP P/N VC-97-00069-1 7/8 EIA to N Type...
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Page 10: Operation
VTM-98006F OPERATION INTRODUCTION. This chapter provides operating instructions for the antenna. CONTROLS AND INDICATORS. The antenna contains no controls or indicators. OPERATING PROCEDURES. 2-3.1 Operator Turn-On. No operator turn-on procedures apply since no power is required to operate the antenna. However, the antenna is coupled to RF equipment (transmitter/receiver) and to associated systems which may require energizing. -
Page 11: Functional Description
VTM-98006F SECTION 3 FUNCTIONAL DESCRIPTION FUNCTIONAL DESCRIPTION. The VBBA 2-30 Broadband Antenna is a base mounted, high-power antenna which provides omnidirectional coverage for general purpose communications use from 2 to 30 MHz. The antenna consists of a radiating element, and a fibreglass base insulator/mounting flange. The radiating element tapers from approximately 8.25 inches in diameter at the insulator to 2.17 inches at the top. -
Page 12: Installation
VTM-98006F SECTION 4 INSTALLATION SITE INFORMATION. Valcom's VBBA 2-30 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 13: Cables And Connectors
Figure 4-1. h. The VBBA 2-30 antenna input is an 7/8 EIA Flange and is found on the base insulator below the drip shields. Prior to connecting the system feedline, ensure the equipment has been de-energized and proper lock out procedures followed. -
Page 14: Installation Data
VTM-98006F Figure 4-1 Installation Data... -
Page 15: Maintenance
VTM-98006F 5.0 MAINTENANCE 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.