What is the most common type of antenna for...

Question 1 / 27070ZHQyNH2F88s44Pw4TfPt

Question 1 of 27070ZHQyNH2F88s44Pw4TfPt

What is the most common type of antenna for GMDSS VHF?

Question 1 of 27070

What is the most common type of antenna for GMDSS VHF?

🔍 Key Concepts

• GMDSS VHF operates in the marine VHF band and is designed for short-range line-of-sight communication • Typical polarization and physical shape of marine VHF antennas on ships and small craft • Difference between antennas used for MF/HF long-distance vs. VHF short-distance communications

💭 Think About

• Look at the physical antennas you commonly see on commercial vessels and small boats for VHF – are they usually long horizontal wires or short vertical sticks? • Consider which polarization (horizontal vs. vertical) is typically used for mobile marine services like ship-to-ship and ship-to-shore VHF. • Ask yourself which antenna type would NOT be practical on most vessels’ masts for VHF GMDSS and why.

✅ Before You Answer

• Verify what type of antenna is normally fitted for marine VHF radiotelephone/GMDSS sets (shape and orientation). • Check which type of antenna is more associated with MF/HF long-range rather than VHF (e.g., long wire antennas). • Confirm whether circular horizontally polarized antennas are standard on shipboard VHF installations.

Question 1 of 27070

What is the most common type of antenna for GMDSS VHF?

Horizontally polarized circular antenna.

Long wire antenna.

Both of the above.

None of the above.