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Troubleshooting
Related Manuals for Valcom AS-3226B/URC
Summary of Contents for Valcom AS-3226B/URC
- Page 1 TECHNICAL MANUAL VTM-01-009 -RevE OPERATION AND INSTALLATION INSTRUCTIONS AS-3226B/URC VHF ANTENNA 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.valcommfg.ca E-mail: sales@valcomguelph.com...
- Page 2 - Fixed base dimensions on page 15 February 25, 2019 - Edited Reference info Errors in this publication can be reported to the Manufacturer. Refer to Section 7 for contact information and address attention to the Engineering Department. Valcom Manufacturing Group Inc...
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Page 3: Table Of Contents
Troubleshooting Procedures ........10 Valcom Manufacturing Group Inc... - Page 4 VHF Antenna AS-3226B/URC ........
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Page 5: General Information And Safety Precautions
GENERAL INFORMATION AND SAFETY PRECAUTIONS 1-1. SAFETY PRECAUTIONS. When working in the vicinity of the VHF Antenna AS-3226B/URC, make sure the antenna is deenergized 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. -
Page 6: Vhf Antenna As-3226B/Urc
AS-3226B/URC VTM-01-009-RevE Figure 1-1 VHF Antenna AS-3226B/URC Valcom Manufacturing Group Inc... -
Page 7: Reference Data
AS-3226B/URC VTM-01-009-RevE Table 1-1. Reference Data Parameter Specification Nomenclature Antenna AS-3226B/URC Manufacturer Valcom Manufacturing Group Inc 35736 Frequency Range 30 to 88 MHz Impedance 50 ohms VSWR less than 3.0:1 Polarization Vertical Power Capability 800 watts Gain 0 dBi Radiation Pattern... -
Page 8: Equipment And Publications Required But Not Supplied
PRD Electronic shooting Bridge Type 3302 Standing Wave General Radio HP Model 415B Indicator Type 1234 Electronic HP Type HP Type 5246L Counter 5340A Insulation Resistance Trouble- Megohmmeter Freed Type 1620 greater than 1 shooting megohm Valcom Manufacturing Group Inc... -
Page 9: Operation
AS-3226B/URC VTM-01-009-RevE SECTION 2 OPERATION 2-1. GENERAL. The AS-3226B/URC Antenna has no operating controls or indicators. It operates only when the ship's VHF receiving and transmitting equipment is operated. Valcom Manufacturing Group Inc... -
Page 10: Functional Description
FUNCTIONAL DESCRIPTION 3-1. FUNCTIONAL DESCRIPTION. The AS-3226B/URC VHF Antenna is a general purpose, high performance, vertically polarized, broadband, balanced dipole covering the 30 to 88 MHz frequency range. It is used for either transmitting or receiving. The antenna is a cylindrical dipole radiator fed by a conventional coaxial RF line. -
Page 11: Scheduled Maintenance
ETN3 can perform the task. b. Visually check painted surfaces for wear, chipping, etc. Paint the antenna with grey epoxy enamel (MIL-P-24441). A technician with a minimum rating of ETN3 can perform this task. Valcom Manufacturing Group Inc... -
Page 12: Scheduled Performance Tests
Title of Test. The title of the test to be performed is VSWR Test. d. Minimum Rating of Technician. A technician with a minimum rating of ETN3 can perform this task. e. VSWR Test Setup. Figure 4-1 shows the VSWR test setup for the antenna. Valcom Manufacturing Group Inc... -
Page 13: Procedures
(e) Read VSWR on standing wave indicator on SWR scale. Test Values. If VSWR is 3.0:1 or greater, internal damage is indicated. Corrective Action. Refer to table 5-3 for corrective actions. Figure 4-1 VSWR Test Setup Valcom Manufacturing Group Inc... -
Page 14: Troubleshooting
5-1. INTRODUCTION. Transmission trouble in the receiving or transmitting system of which the AS-3226B/URC VHF Antenna is a part may be caused by trouble in the antenna, in another piece of equipment, or in the transmission line. If trouble occurs, check to determine that the equipment and the RF transmission line being used with the antenna are functioning properly before attempting to follow the procedures described in this section. -
Page 15: Troubleshooting Procedures
RF connector assembly in antenna. 1. Defective RF connector High VSWR (greater than 3.0:1) or RF gasket. as indicated by VSWR test Replace antenna. described in paragraph 4-4. 2. Defective internal assembly in antenna. Valcom Manufacturing Group Inc... -
Page 16: Corrective Maintenance
AS-3226B/URC VTM-01-009-RevE SECTION 6 CORRECTIVE MAINTENANCE 6-1. INTRODUCTION. No corrective maintenance can be performed on the AS-3226B/URC VHF Antenna. 6-2. ADJUSTMENTS AND ALIGNMENT. No adjustments and alignment are applicable to the antenna. 6-3. REPAIR. No repair of the antenna or any of its parts is applicable. -
Page 17: Parts List
Table 7-1. List of Parts Table 7-2. List of Manufacturers a. List of Parts. Table 7-1 lists the parts of the AS-3226B/URC Antenna as shipped. b. List of Manufacturers. Table 7-2 contains the name, address, and Federal Supply Code for Manufacturers of the manufacturers supply items for the equipment as referenced in Table 7-1. -
Page 18: Installation
SECTION 8 INSTALLATION 8-1. SITE INFORMATION. The AS-3226B/URC VHF 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, preferably more than 30 feet from any contiguous structures, such as masts, bulkheads, or other metal objects. -
Page 19: Installation Checkout
VTM-01-009-RevE 8-7. INSTALLATION CHECKOUT. Checkout of the antenna after installation can only be accomplished by operating the ship's receiving and transmitting equipment that is used with the antenna. Figure 8-1 Installation Data of the AS-3226B/URC Antenna Valcom Manufacturing Group Inc...