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AMATEUR RADIO CLASS "B" EXAMINATION ELEMENT VII PREPARED BY: HOMER M. ALBUFERA, 4F1KYW
1. If the power radiated is 1,250 watts, what is the antenna resistance if the antenna current is 5 amperes? A. 250 ohms B. 25 ohms C. 5 ohms D. 1 ohm 2. What is the term used to denote a microwave signal following the curvature of the earth in its propagation? A. refraction B. directing C. diffraction D. reflection 3. The frequency band most usable for skywave propagation is, A. MF B. HF C. VHF D. UHF 4. Identical or matched impedance of transmission line and antenna will result in, A. infinite B. unity C. zero D. very large SWR 5. A radio wave 10 meter long has a frequency equal to approximately, A. 30 MHz B. 20 MHz C. 50 MHz D. 60 MHz 6. Frequency modulated by voice is represented by the symbol A. A3 B. F5C C. F3 D. F8
AMATEUR RADIO CLASS-B LEVEL VII
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AMATEUR RADIO CLASS "B" EXAMINATION ELEMENT VII PREPARED BY: HOMER M. ALBUFERA, 4F1KYW
7. Property of receiver to discriminate against desired and undesired signal, A. sensitivity B. quality of circuit C. Q of the coil D. selectivity 8. A device used in SSB operation that suppresses the carrier of an SSB transmitter, A. reactance modulator B. product detector C. balanced modulator D. limiting amplifier 9. What is the length l ength of the fourth harmonic of a 2 meter long radio signal? A. 0.25 meter B. 0.50 meter C. 1 meter D. 2 meter 10. What is the equivalent of "The name of any station" in the Q code? A. QRA B. QRP C. QSP D. QRL 11. What is the equivalent of "Who is calling me" in the Q code? A. QRZ B. QSP C. QRN D. QRL 12. What is the equivalent of "I am troubled by static" in the Q code? A. QRN B. QRL C. QRZ D. QRA 13. What is the equivalent of "Will you relay my message" in the Q code A. QSP B. QRL C. QRN D. QRZ AMATEUR RADIO CLASS-B LEVEL VII
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AMATEUR RADIO CLASS "B" EXAMINATION ELEMENT VII PREPARED BY: HOMER M. ALBUFERA, 4F1KYW
14. What is the Q code for "conversation, talk" A. QSO B. QSP C. QRL D. QSL 15. What is the Q code for "Signal Strength Varies" A. QSO B. QSB C. QSL D. QRL 16. What is the Q code for "Ham operator" A. YL B. OM C. OS D. OP 17. What is the Q code for "Understood" A. QSL B. QRL C. QRX D. QRA 18. The use of two breaks in joining an on-going conversation indicates, A. desire to join the conversation B. there is an urgency or priority traffic C. there is extreme emergency D. somebody very important is joining the conversation 19. The calling frequency in the 40 meter band in the Philippines is A. 7.000 MHz B. 7.000 KHz C. 7.045 MHz D. 7.045 KHz
AMATEUR RADIO CLASS-B LEVEL VII
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AMATEUR RADIO CLASS "B" EXAMINATION ELEMENT VII PREPARED BY: HOMER M. ALBUFERA, 4F1KYW
20. The simultaneous transmission of sound and picture as in amateur television maybe allowed by NTC on all frequencies, A. above 20 MHz B. above 30 MHz C. above 40 MHz D. above 60 MHz 21. The frequency shift in radioteletype transmission shall not exceed, A. 3 KHz B. 850 Hz C. 85 KHz D. 80 Hz 22. Maximum power that can be authorized for Class B amateurs on SSB suppressed carrier is, A. 2 KW PEP B. 1 KW PEP C. 500 W PEP D. 200 W PEP 23. Maximum power that can be authorized for Class B using VHF transceivers, A. 100 watts B. 200 watts C. 500 watts D. state of the art power output 24. When it is 11:00 PM in the Philippines, it is equivalent to, A. 0200 UTC B. 1100 UTC C. 1500 UTC D. 1200 UTC 25. Single-side band modulation is classified under A. AM B. PM C. PCM D. DM
AMATEUR RADIO CLASS-B LEVEL VII
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AMATEUR RADIO CLASS "B" EXAMINATION ELEMENT VII PREPARED BY: HOMER M. ALBUFERA, 4F1KYW
ANSWER KEY 1. 5 1. 5 ohms 2. directing 2. directing 3. HF 3. HF 4. unity 4. unity 5. 30 5. 30 MHz 6. F3 6. F3 7. selectivity 7. selectivity 8. balanced 8. balanced modulator 9. 0.50 9. 0.50 meter 10. QRA 10. QRA 11. QRZ 11. QRZ 12. QRN 12. QRN 13. QSP 13. QSP 14. QSO 14. QSO 15. QSB 15. QSB 16. OM 16. OM 17. QSL 17. QSL 18. there 18. there is an urgency or priority traffic 19. 7.045 19. 7.045 MHz 20. above 20. above 60 MHz 21. 850 21. 850 Hz 22. 1 22. 1 KW PEP 23. state 23. state of the art power output 24. 1500 24. 1500 UTC 25. AM 25. AM
