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

Page 1: ...TECHNICAL MANUAL VTM 07 007 OPERATION AND INSTALLATION INSTRUCTIONS AS 3226C URC VHF ANTENNA...

Page 2: ...a N1H 6L3 Tel 519 824 3220 Fax 519 824 3411 Web Site www valcom guelph com E mail enquiries valcom guelph com REVISION SHEET Revision Description Date Original Issue November 13 2007 Errors in this pu...

Page 3: ...ONAL 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 Maint...

Page 4: ...irements 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 Ins...

Page 5: ...S 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...

Page 6: ...AS 3226C URC VTM 07 007 Valcom Manufacturing Group Inc 2 Figure 1 1 VHF Antenna AS 3226C URC...

Page 7: ...ttern Horizontal omnidirectional Vertical figure 8 Temperature Operating 54 C to 65 C Non Operating 62 C to 71 C Wind Velocity 120 mph Humidity 95 Shock Qualified to meet MIL S 901C Grade A Vibration...

Page 8: ...tenance and trouble shooting Modulating Source General Radio Type 1214 A VHF Generator General Radio Type 1211 C and Type 1215 C Impedance Bridge PRD Electronic Type 3302 Standing Wave Indicator HP Mo...

Page 9: ...007 Valcom Manufacturing Group Inc 5 SECTION 2 OPERATION 2 1 GENERAL The AS 3226C URC Antenna has no operating controls or indicators It operates only when the ship s VHF receiving and transmitting eq...

Page 10: ...adiator to be fed in a balanced manner eliminating extraneous line currents see figure 3 1 a Electrical Balance The electrical balance provided for the radiating elements permits feeding the antenna d...

Page 11: ...ented for this equipment aboard your ship or station 4 2 SCHEDULED MAINTENANCE ACTION INDEX Table 4 1 lists preventive maintenance procedures and scheduled performance tests 4 3 PREVENTATIVE MAINTENAN...

Page 12: ...y grounded Table 4 1 Scheduled Maintenance Action Index Periodicity Maintenance Action Reference A Inspect antenna for dirt 4 3 a A Check painted surfaces for wear chipping etc 4 3 b A Check the VSWR...

Page 13: ...ed frequency as indicated on electronic counter b Tune impedance bridge for maximum reading as indicated on standing wave indicator c Set reference level on standing wave indicator to 1 0 on SWR scale...

Page 14: ...es described in this section The antenna is essentially a sealed assembly and as such is non repairable 5 2 TROUBLESHOOTING INDEX Table 5 1 lists possible troubles with references to the appropriate p...

Page 15: ...cated by megohmmeter connected between inner and outer conductors of RF connector 1 Defective RF connector or RF gasket 2 Defective internal assembly in antenna Replace antenna High VSWR greater than...

Page 16: ...RECTIVE MAINTENANCE 6 1 INTRODUCTION No corrective maintenance can be performed on the AS 3226C URC VHF Antenna 6 2 ADJUSTMENTS AND ALIGNMENT No adjustments and alignment are applicable to the antenna...

Page 17: ...s 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 Table 7 1...

Page 18: ...es are required observe normal precautions when handling the antenna 8 4 FOUNDATION The antenna should be installed vertically on a mounting plate that has bolt holes matching those in the antenna bas...

Page 19: ...Inc 15 Figure 8 1 Installation Data of the AS 3226C URC Antenna 8 7 INSTALLATION CHECKOUT Checkout of the antenna after installation can only be accomplished by operating the ship s receiving and tra...