Which of the following is not recommended...

🔍 Key Concepts

• Manufacturer installation guidelines for Inmarsat-C antennas (especially grounding vs. insulating the antenna base) • Purpose of bonding/grounding radio equipment and masts on a vessel (lightning, static, RF performance, safety) • Proper weatherproofing practices for coax/transmission line connectors and cable runs on masts

💭 Think About

• Ask yourself: Should the antenna body usually be isolated from the ship’s metal structure, or solidly bonded/grounded to it? Which practice reduces static build‑up and lightning damage? • Think about which actions improve long‑term reliability against water ingress and corrosion in connectors and cables, and which action might actually defeat that protection. • Consider how drip loops, sealing, and taping are normally used on any mast‑mounted antenna — which one of the options doesn’t fit standard marine radio installation practice?

✅ Before You Answer

• Verify what Inmarsat-C manuals say about bonding/grounding the antenna chassis or base to the mast/ship’s bonding system. • Check which options describe standard weatherproofing steps (sealant, tape, drip loop) that are widely accepted best practice. • Identify the one choice whose instruction would typically contradict bonding/grounding recommendations for marine antenna mounts.

Which of the following is not recommended for Inmarsat-C antenna installations?

Ensure the antenna is electrically insulated from the mounting mast. Check resistance with ohmmeter .

Ground the antenna chassis to the mounting mast. Apply silicone to weatherproof the connection.

Fashion a drip loop in the transmission line near the antenna. Secure to the mounting mast with cable tie.

Apply waterproof sealant or putty around transmission line connectors. Wrap with self-bonding/vinyl tape.

🔍 Key Concepts

💭 Think About

✅ Before You Answer