The VHF-DSC self-test function (if...

Question 1 / 20tP7FtYhyeElIKUKCqqAM

Question 1 of 20tP7FtYhyeElIKUKCqqAM

The VHF-DSC self-test function (if available) usually performs the following:

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Question 1 of 20

tP7FtYhyeElIKUKCqqAM

The VHF-DSC self-test function (if available) usually performs the following:

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🔍 Key Concepts

• DSC (Digital Selective Calling) functions versus normal voice communications on VHF • What a self-test or built‑in test normally does on radio/safety equipment • Regulatory limits and restrictions on unnecessary transmissions on Ch-70 and Ch-16

💭 Think About

• Ask yourself: would a proper self-test feature be allowed to send any real signal on a distress/safety channel during normal testing? Why or why not? • Consider what the purpose of a self-test is: is it mainly to radiate a test signal over the air, or to check internal circuits and functions? • Look at each choice and decide which one best matches how modern marine electronics are designed to avoid interfering with other stations.

✅ Before You Answer

• Verify whether DSC Ch-70 may be used for test transmissions in normal operation, and under what conditions. • Think about whether a routine self-test should depend on another radio receiver picking up its signal, or if it should work even when no antenna is connected. • Check which option best describes an internal diagnostic of the radio’s DSC functions without causing external interference.

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Question 1 of 20

The VHF-DSC self-test function (if available) usually performs the following:

Transmits a very weak DSC signal which is picked up by the Ch-70 receiver.

Transmits a weak voice signal which is picked up on Ch-16.

Makes a diagnostic test of the system without actually transmitting a signal.

Does a check sum of the memory chips.

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Question 1 / 20tP7FtYhyeElIKUKCqqAM

Question 1 of 20tP7FtYhyeElIKUKCqqAM

The VHF-DSC self-test function (if available) usually performs the following:

Back

Question 1 of 20

tP7FtYhyeElIKUKCqqAM

The VHF-DSC self-test function (if available) usually performs the following:

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

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