Interference induced from nearby HF...

Question 1 / 20v7DeWCuZ8lJoVREHHipK

Question 1 of 20v7DeWCuZ8lJoVREHHipK

Interference induced from nearby HF transmitters may cause Inmarsat system failures. What is the most appropriate action to resolve this problem?

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Question 1 of 20

v7DeWCuZ8lJoVREHHipK

Interference induced from nearby HF transmitters may cause Inmarsat system failures. What is the most appropriate action to resolve this problem?

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🔍 Key Concepts

• RF interference coupling paths (how strong HF signals can get onto Inmarsat cabling/equipment) • Purpose of low‑pass filters vs. ferrite clamps vs. grounding changes • Impact of changing LNA (Low Noise Amplifier) bias on receiver performance

💭 Think About

• For each option, ask: does this action block or reduce unwanted HF energy from getting into the Inmarsat system, or might it actually make performance worse? • Think about what a low‑pass filter does to high‑frequency signals and whether that matches the Inmarsat operating band. • Consider whether changing the ground lead length usually improves or worsens RF interference problems, and what ferrite clamps are specifically designed to do on cables.

✅ Before You Answer

• Verify the frequency range Inmarsat operates in compared with typical HF transmitters. • Check which device (filter, ferrite, ground change, LNA bias) is normally used to suppress common‑mode RF on coaxial cables. • Confirm which option is least likely to degrade normal Inmarsat receive performance while still targeting the interference path.

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Question 1 of 20

Interference induced from nearby HF transmitters may cause Inmarsat system failures. What is the most appropriate action to resolve this problem?

Install a longer ground lead to the INMARSAT terminal.

Install a low-pass filter between the coax cable and antenna.

Reduce bias to the INMARSAT antenna's Low Noise Amplifier.

Install ferrite clamps on the coax cable to suppress induced RF .

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Question 1 / 20v7DeWCuZ8lJoVREHHipK

Question 1 of 20v7DeWCuZ8lJoVREHHipK

Interference induced from nearby HF transmitters may cause Inmarsat system failures. What is the most appropriate action to resolve this problem?

Back

Question 1 of 20

v7DeWCuZ8lJoVREHHipK

Interference induced from nearby HF transmitters may cause Inmarsat system failures. What is the most appropriate action to resolve this problem?

No comments yet

Be the first to share your thoughts!

If the question has a related picture, it will appear here.

🔍 Key Concepts

💭 Think About

✅ Before You Answer

👋 Hi! I'm Genie, your AI study assistant. How can I help you with this question?

Quick actions

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