Marine Antenna & RF Infrastructure Services India (VSWR, Feeder & Alignment)
Seanav Marine delivers certified marine antenna and RF infrastructure services across all Indian ports and shipyards. Our radio technicians handle antenna replacement, coaxial feeder renewal, VSWR impedance testing, RF power optimization, and multi-band antenna mast alignment for VHF, MF/HF, GPS, AIS, NAVTEX, and satellite terminals, eliminating transmission dropouts and ensuring full Class radio survey compliance.
Supported OEM Equipment & Multi-Make Coverage
Send the equipment make and model so we can confirm the scope and parts availability.
Technical Specifications & Operational Coverage
| Antennas Serviced | VHF Marine, MF/HF Whip & Wire, Class A AIS, GPS/DGPS, NAVTEX, Inmarsat, Starlink Maritime, Iridium |
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| Diagnostic Tests | Forward/Reflected RF Power Measurement, VSWR Spectrum Sweep (1.0–3.0 GHz), Coaxial Feeder TDR Fault-Location |
| Materials Supplied | Low-loss RG-213, RG-214, LMR-400 coaxial cables, hermetic N-type/PL-259 connectors, mast stand-offs, lightning arrestors |
| Statutory Standards | ITU Radio Regulations Appendix 18, SOLAS IV/14, IMO Res. A.803(19) / A.804(19) |
| Port Attendance SLA | Berth and shipyard attendance within 2–4 hours across all major Indian maritime hubs |
Standard 5-Step Antenna & RF Feeder Overhaul Protocol
Our Class-approved technicians execute this standardized procedural workflow to ensure first-time compliance with attending Class surveyors and Indian Port State Control (PSC) inspectors:
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Visual Mast & Cable Run Inspection
Inspect mast brackets, antenna whip physical integrity, coaxial UV degradation, and weatherproofing seals on connectors.
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VSWR & Forward/Reflected Power Sweep
Connect calibrated RF wattmeter and directional coupler; verify VSWR ratio remains strictly below 1.5 across all operational channels.
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Defective Cable Pulling & Termination
Extract corroded / water-ingress feeder cables; pull marine-grade low-smoke zero-halogen low-loss coax; terminate with soldered or compression silver-plated connectors.
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Mast Grounding & Lightning Dissipation Verification
Inspect copper bonding strap from antenna base to ship's steel structure; verify earth loop resistance is under 0.02 ohms.
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Live On-Air Test Transmission with Coast Station
Conduct radiotelephone and DSC test calls to Indian coastal radio stations; record signal clarity and signal-to-noise ratio.
24/7 Port & Anchorage Attendance Across India
Seanav Marine provides rapid shore-based and offshore launch boat boarding across all 170+ Major and Minor Indian Ports, including:
Certified Equipment & Replacement Spares in Stock
Seanav Marine maintains bonded warehouse spare parts inventory across major Indian ports for immediate dispatch and installation during port calls:
Download Marine Antenna & Coax Cable Maintenance Guide
Identify feeder water-ingress, high VSWR alarms, and connector corrosion before Class radio survey.