How often must a radiotelegraph station...

Question 1 / 20VR47wbKLgaJQOq2MXEdY

Question 1 of 20VR47wbKLgaJQOq2MXEdY

How often must a radiotelegraph station transmit its call sign when a transmission is maintained for more than 20 minutes in the band 405-525 kHz?

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Question 1 of 20

VR47wbKLgaJQOq2MXEdY

How often must a radiotelegraph station transmit its call sign when a transmission is maintained for more than 20 minutes in the band 405-525 kHz?

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🔍 Key Concepts

• Radiotelegraph station identification rules in the MF band (405–525 kHz) • Difference between a fixed time interval requirement and a conditional exception (such as during public correspondence) • How requirements may change when a transmission exceeds a certain duration (more than 20 minutes)

💭 Think About

• Look for which option mentions a special condition that might apply when public correspondence (traffic with the public) is in progress. • Decide whether the rule is likely to require more frequent identification (shorter intervals) or allows longer gaps between identifications for long transmissions. • Ask yourself: does the regulation specify a fixed interval only, or does it allow an exception when you’re handling continuous traffic?

✅ Before You Answer

• Verify which choice references an exception for public correspondence and compare it to those that do not mention any exception. • Confirm that the rule is specifically about transmissions lasting more than 20 minutes in the 405–525 kHz band, not general VHF or other bands. • Check that the interval in the correct option is short enough to ensure regular station identification during a long continuous transmission.

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Question 1 of 20

How often must a radiotelegraph station transmit its call sign when a transmission is maintained for more than 20 minutes in the band 405-525 kHz?

At 20 minute intervals

At least every 10 minutes

At 15 minute intervals unless public correspondence is in progress

At the beginning and end of each communication with any other station

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Question 1 / 20VR47wbKLgaJQOq2MXEdY

Question 1 of 20VR47wbKLgaJQOq2MXEdY

How often must a radiotelegraph station transmit its call sign when a transmission is maintained for more than 20 minutes in the band 405-525 kHz?

Back

Question 1 of 20

VR47wbKLgaJQOq2MXEdY

How often must a radiotelegraph station transmit its call sign when a transmission is maintained for more than 20 minutes in the band 405-525 kHz?

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

— No credit card needed