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Technician Licensing Class

Technician Licensing Class. Your First Radio Section 11. Your First Radio. T4B4 Quick access to a favorite frequency on your transceiver can be done by storing the frequency in a memory channel.

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Technician Licensing Class

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  1. Technician Licensing Class Your First Radio Section 11

  2. Your First Radio T4B4 Quick access to a favorite frequency on your transceiver can be done by storing the frequency in a memory channel. T9A4 A disadvantage of the "rubber duck" antenna supplied with most handheld radio transceivers is that it does not transmit or receive as effectively as a full-sized antenna.

  3. Your First Radio T9A7A good reason not to use a "rubber duck" antenna inside your car is that signals can be significantly weaker than when it is outside of the vehicle. T7A10An RF power amplifier increases the low-power output from a handheld transceiver. VHF/UHF Power Amplifier

  4. Your First Radio T8A4FM is the type of modulation most commonly used for VHF and UHF voice repeaters. T8A9The approximate bandwidth of a VHF repeater FM phone signal is between 5 and 15 kHz. T8A2FM is the type of modulation most commonly used for VHF packet radio transmissions. (Packet is wireless data transmission) T4A1Some microphone connectors on amateur transceivers include push-to-talk functions and voltage links for powering the microphone. Connector Push to talk button

  5. Your First Radio T4A2A set of headphones could be used in place of a regular speaker to help you copy signals in a noisy area.

  6. Your First Radio T4A3Preventing voltage fluctuations from reaching sensitive circuits is a good reason to use a regulated power supply for communications equipment. MFJ-4125 13.8VDC@22Amp Jetstream JTPS30M Regulated Power Supply

  7. Your First Radio T8A3SSB is the type of voice modulation most often used for long-distance or weak signal contacts on the VHF and UHF bands. T8A7The primary advantage of single sideband over FM for voice transmissions is that SSB signals have narrower bandwidth. T8A6The sideband normally used for 10 meter HF, VHF and UHF single-sideband communications is upper sideband. (upper frequencies=upper sideband)

  8. Your First Radio T7A6A transverter is a device that takes the output of a low-powered 28 MHz SSB exciter and produces a 222 MHz output signal.

  9. Take Aways • A way to enable quick access to a favorite frequency on your transceiver is to store the frequency in a memory channel. • A disadvantage of the "rubber duck" antenna supplied with most handheld radio transceivers is it does not transmit or receive as effectively as a full-sized antenna. • A good reason NOT to use a "rubber duck" antenna inside your car is that signals can be significantly weaker than when it is outside of the vehicle.

  10. Take Aways • An RF power amplifier increases the low-power output from a handheld transceiver. • FM is most commonly used for VHF and UHF voice repeaters. • The approximate bandwidth of a VHF repeater FM phone signal is between 5 and 15 kHz. • Frequency modulation (FM) is most commonly used for VHF packet radio transmissions.

  11. Take Aways • Someconnectorson amateur transceivers include push-to-talk and voltages for powering the microphone. • A set of headphones could be used in place of a regular speaker to help you copy signals in a noisy area. • A good reason to use a regulated power supply for communications equipment is it prevents voltage fluctuations from reaching sensitive circuits. • SSB voice modulation is most often used for long-distance or weak signal contacts on the VHF and UHF bands.

  12. Take Aways • The primary advantage of single sideband over FM for voice transmissions is SSB signals have narrower bandwidth. • Upper sideband (USB) is normally used for 10 meter HF, VHF and UHF single-sideband communications. • A Transvertertakes the output of a low-powered 28 MHz SSB exciter and produces a 222 MHz output signal.

  13. Element 2 Technician Class Question Pool Element 2 Technician Class Question Pool Your First Radio Valid July 1, 2010 Through June 30, 2014

  14. T4B04 What is a way to enable quick access to a favorite frequency on your transceiver? • Enable the CTCSS tones • Store the frequency in a memory channel • Disable the CTCSS tones • Use the scan mode to select the desired frequency

  15. T9A04 What is a disadvantage of the "rubber duck" antenna supplied with most handheld radio transceivers? • It does not transmit or receive as effectively as a full-sized antenna • It transmits a circularly polarized signal • If the rubber end cap is lost it will unravel very quickly • All of these choices are correct

  16. T9A07 What is a good reason not to use a "rubber duck" antenna inside your car? • Signals can be significantly weaker than when it is outside of the vehicle • It might cause your radio to overheat • The SWR might decrease, decreasing the signal strength • All of these choices are correct

  17. T7A10 What device increases the low-power output from a handheld transceiver? • A voltage divider • An RF power amplifier • An impedance network • A voltage regulator

  18. T8A04 Which type of modulation is most commonly used for VHF and UHF voice repeaters? • AM • SSB • PSK • FM

  19. T8A09 What is the approximate bandwidth of a VHF repeater FM phone signal? • Less than 500 Hz • About 150 kHz • Between 5 and 15 kHz • Between 50 and 125 kHz

  20. T8A02 What type of modulation is most commonly used for VHF packet radio transmissions? • FM • SSB • AM • Spread Spectrum

  21. T4A01 Which of the following is true concerning the microphone connectors on amateur transceivers? • All transceivers use the same microphone connector type • Some connectors include push-to-talk and voltages for powering the microphone • All transceivers using the same connector type are wired identically • Un-keyed connectors allow any microphone to be connected

  22. T4A02 What could be used in place of a regular speaker to help you copy signals in a noisy area? • A video display • A low pass filter • A set of headphones • A boom microphone

  23. T4A03 Which is a good reason to use a regulated power supply for communications equipment? • It prevents voltage fluctuations from reaching sensitive circuits • A regulated power supply has FCC approval • A fuse or circuit breaker regulates the power • Power consumption is independent of load

  24. T8A03 Which type of voice modulation is most often used for long-distance or weak signal contacts on the VHF and UHF bands? • FM • AM • SSB • PM

  25. T8A07 What is the primary advantage of single sideband over FM for voice transmissions? • SSB signals are easier to tune • SSB signals are less susceptible to interference • SSB signals have narrower bandwidth • All of these choices are correct

  26. T8A06 Which sideband is normally used for 10 meter HF, VHF and UHF single-sideband communications? • Upper sideband • Lower sideband • Suppressed sideband • Inverted sideband

  27. T7A06 What device takes the output of a low- powered 28 MHz SSB exciter and produces a 222 MHz output signal? • High-pass filter • Low-pass filter • Transverter • Phase converter

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