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Radio English

Radio English. Practical English 2. Day 9. Radio Checks Radio Silence. Radio Checks. Why do we do radio checks? We have just finished repairing our radio and we want to know if it works.

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Radio English

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  1. Radio English Practical English 2

  2. Day 9 • Radio Checks • Radio Silence

  3. Radio Checks • Why do we do radio checks? • We have just finished repairing our radio and we want to know if it works. • We've just turned on the power to our ship and ready for a mission. Check the radio to see if it works. • You don't hear traffic. • You think that no one hears you (because you make calls and no one seems to respond).

  4. Radio Checks • You must NEVER do radio check on VHF Channel 16 (158.8 MHz). Why? • It is the International Distress, Safety, and Calling channel • What should we use instead? • Choose a working channel.

  5. Radio Checks • What is a working channel? • A working channel is a channel on which you conduct business and have conversations. • What can happen if I do a radio check on VHF Channel 16? • The USCG will issue you a ticket with a fine (monetary penalty).

  6. Radio Checks • What are some working channels we may use to do a radio check? • 157.1 MHz (Channel 22A) if you are talking to USCG • 156.45 MHz (Channel 9) • 156.65 MHz (Channel 13) • 156.375 MHz (Channel 67) *Gulf of Mexico • These channels listed on page D-3 • What's the working channel near Korea?

  7. Radio Checks • Two categories of how well a signal is received • Signal Strength • How strong or loud a signal • Readability • How clear the voice is.

  8. Radio Checks • Signal Strength • Loud: Strong signal. • Good: Good signal. • Weak: Can hear, but with difficulty. • Very weak: Can hear, but with great difficulty. • Fading: Signal alternates between strong and weak.

  9. Radio Check • Readability • Clear: Excellent quality. Readable: Good quality. Distorted: Trouble copying. • With interference: Trouble copying due to interference. • Intermittent: Signal alternates between readable and unreadable. • Unreadable: Quality is so bad transmission cannot be understood.

  10. Answering a Radio Check • Radio checks should be answered with “ROGER” • if the signal strength is LOUD or GOOD, and readability is CLEAR. • Otherwise, use a signal strength and readability combination.

  11. ROGER situation • HANNARA – THIS IS HANBADA – RADIO CHECK – OVER. • HANBADA – THIS IS HANNARA – ROGER – OVER. • HANNARA – THIS IS HANBADA – ROGER – OUT.

  12. Another situation • HANNARA – THIS IS HANBADA – RADIO CHECK – OVER. • HANBADA – THIS IS HANNARA – I READ YOU WEAK BUT READABLE – OVER. • HANNARA – THIS IS HANBADA – MY SIGNAL IS WEAK BUT READABLE – OUT.

  13. RADIO SILENCE • Two reasons to impose radio silence • Military safety • E.g. you think North Koreans are listening • MAYDAY situation • A ship needs rescuing. • We’ll discuss this in two weeks or so.

  14. Imposing Radio Silence • ALL STATIONS (repeat 3 times) - THIS IS (repeat voice call sign 3 times) - SILENCE (repeat 3 times) - 2670 kHz - I SAY AGAIN - ALL STATIONS (repeat 3 times) - THIS IS (repeat voice call sign 3 times) - SILENCE (repeat 3 times) - 2670 kHz – OUT

  15. About Radio Silence • Can only be issued by a competent authority • E.g. Ship’s captain • SILENCE is pronounced “SEE-LONCE” • Because it comes from French • Why end with “OUT” instead of “OVER”? • NO ONE should respond. You’ve just told them to be silent.

  16. Lifting Radio Silence • ALL STATIONS (3 times) - THIS IS (voice call sign 3 times) - SILENCE LIFTED (3 times) - 2670 kHz -OUT

  17. Questions? Quiz 2

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