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Amateur Radio Question PoolsNew! View the differences between the 2008 Extra question pool and the previous pool. Technician Class Question PoolPrev 1 2 3 4 5 6 7 8 9 0 NextT5A01 What does a microphone connect to in a basic amateur radio station? The receiver The transmitter The SWR Bridge The Balun T5A02 Which piece of station equipment converts electrical signals to sound waves? Frequency coordinator Frequency discriminator Speaker Microphone T5A03 What is the term used to describe what happens when a microphone and speaker are too close to each other? Excessive wind noise Audio feedback Inverted signal patterns Poor electrical grounding T5A04 What could you use 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 T5A05 What is a good reason for using a regulated power supply for communications equipment? To protect equipment from voltage fluctuations A regulated power supply has FCC approval A fuse or circuit breaker regulates the power Regulated supplies are less expensive T5A06 Where must a filter be installed to reduce spurious emissions? At the transmitter At the receiver At the station power supply At the microphone T5A07 What type of filter should be connected to a TV receiver as the first step in trying to prevent RF overload from a nearby 2-meter transmitter? Low-pass filter High-pass filter Band pass filter Notch filter T5A08 What is connected between the transceiver and computer terminal in a packet radio station? Transmatch Mixer Terminal Node Controller Antenna T5A09 Which of these items is not required for a packet radio station? Antenna Transceiver Power source Microphone T5A10 What can be used to connect a radio with a computer for data transmission? Balun Sound Card Impedance matcher Autopatch T5B01 What may happen if a transmitter is operated with the microphone gain set too high? The output power will be too high It may cause the signal to become distorted and unreadable The frequency will vary The SWR will increase T5B02 What kind of information may a VHF/UHF transceiver be capable of storing in memory? Transmit and receive operating frequency CTCSS tone frequency Transmit power level All of these answers are correct T5B03 What is one way to select a frequency on which to operate? Use the keypad or VFO knob to enter the correct frequency Turn on the CTCSS encoder Adjust the power supply ripple frequency All of these answers are correct T5B04 What is the purpose of the squelch control on a transceiver? It is used to set the highest level of volume desired It is used to set the transmitter power level It is used to adjust the antenna polarization It is used to quiet noise when no signal is being received T5B05 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 T5B06 What might you do to improve the situation if the station you are listening to is hard to copy because of ignition noise interference? Increase your transmitter power Decrease the squelch setting Turn on the noise blanker Use the RIT control T5B07 What is the purpose of the buttons labeled "up" and "down" on many microphones? To allow easy frequency or memory selection To raise or lower the internal antenna To set the battery charge rate To upload or download messages T5B08 What is the purpose of the "shift" control found on many VHF/UHF transceivers? Adjust transmitter power level Change bands Adjust the offset between transmit and receive frequency Change modes T5B09 What does RIT mean? Receiver Input Tone Receiver Incremental Tuning Rectifier Inverter Test Remote Input Transmitter T5B10 What is the purpose of the "step" menu function found on many transceivers? It adjusts the transmitter power output level It adjusts the modulation level It sets the earphone volume It sets the tuning rate when changing frequencies T5B11 What is the purpose of the "function" or "F" key found on many transceivers? It turns the power on and off It selects the autopatch access code It selects an alternate action for some control buttons It controls access to the memory scrambler T5C01 What is one purpose of a repeater? To cut your power bill by using someone else's higher power system To extend the usable range of mobile and low-power stations To transmit signals for observing propagation and reception To communicate with stations in services other than amateur T5C02 What is a courtesy tone? A tone used to identify the repeater A tone used to indicate when a transmission is complete A tone used to indicate that a message is waiting for someone A tone used to activate a receiver in case of severe weather T5C03 Which of the following is the most important information to know before using a repeater? The repeater input and output frequencies The repeater call sign The repeater power level Whether or not the repeater has an autopatch T5C04 Why should you pause briefly between transmissions when using a repeater? To let your radio cool off To reach for pencil and paper so you can take notes To listen for anyone wanting to break in To dial up the repeater's autopatch T5C05 What is the most common input/output frequency offset for repeaters in the 2-meter band? 0.6 MHz 1.0 MHz 1.6 MHz 5.0 MHz T5C06 What is the most common input/output frequency offset for repeaters in the 70-centimeter band? 600 kHz 1.0 MHz 1.6 MHz 5.0 MHz T5C07 What is meant by the terms input and output frequency when referring to repeater operations? The repeater receives on one frequency and transmits on another The repeater offers a choice of operating frequencies One frequency is used to control the repeater and another is used to retransmit received signals The repeater must receive an access code on one frequency before it will begin transmitting T5C08 What is the meaning of the term simplex operation? Transmitting and receiving on the same frequency Transmitting and receiving over a wide area Transmitting on one frequency and receiving on another Transmitting one-way communications T5C09 What is a reason to use simplex instead of a repeater? When the most reliable communications are needed To avoid tying up the repeater when direct contact is possible When an emergency telephone call is needed When you are traveling and need some local information T5C10 How might you find out if you could communicate with a station using simplex instead of a repeater? Check the repeater input frequency to see if you can hear the other station Check to see if you can hear the other station on a different frequency band Check to see if you can hear a more distant repeater Check to see if a third station can hear both of you T5C11 What is the term for a series of repeaters that can be connected to one another to provide users with a wider coverage? Open repeater system Closed repeater system Linked repeater system Locked repeater system T5C12 What is the main reason repeaters should be approved by the local frequency coordinator before being installed? Coordination minimizes interference between repeaters and makes the most efficient use of available frequencies Coordination is required by the FCC Repeater manufacturers have exclusive territories and you could be fined for using the wrong equipment Only coordinated systems will be approved by the officers of the local radio club T5C13 Which of the following statements regarding use of repeaters is true? All amateur radio operators have the right to use any repeater at any time Access to any repeater may be limited by the repeater owner Closed repeaters must be opened at the request of any amateur wishing to use it Open repeaters are required to use CTCSS tones for access T5C14 What term is used to describe a repeater when use is restricted to the members of a club or group? A beacon station An open repeater A auxiliary station A closed repeater T5D01 What is meant by fundamental overload in reference to a receiver? Too much voltage from the power supply Too much current from the power supply Interference caused by very strong signals from a nearby source Interference caused by turning the volume up too high T5D02 Which of the following is NOT a cause of radio frequency interference? Fundamental overload Doppler shift Spurious emissions Harmonics T5D03 What is the most likely cause of telephone interference from a nearby transmitter? Harmonics from the transmitter The transmitter's signals are causing the telephone to act like a radio receiver Poor station grounding Improper transmitter adjustment T5D04 What is a logical first step when attempting to cure a radio frequency interference problem in a nearby telephone? Install a low-pass filter at the transmitter Install a high-pass filter at the transmitter Install an RF filter at the telephone Improve station grounding T5D05 What should you do first if someone tells you that your transmissions are interfering with their TV reception? Make sure that your station is operating properly and that it does not cause interference to your own television Immediately turn off your transmitter and contact the nearest FCC office for assistance Tell them that your license gives you the right to transmit and nothing can be done to reduce the interference Continue operating normally because your equipment cannot possibly cause any interference T5D07 Which of the following may be useful in correcting a radio frequency interference problem? Snap-on ferrite chokes Low-pass and high-pass filters Notch and band-pass filters All of these answers are correct T5D08 What is the proper course of action to take when a neighbor reports that your radio signals are interfering with something in his home? You are not required to do anything Contact the FCC to see if other interference reports have been filed Check your station and make sure it meets the standards of good amateur practice Change your antenna polarization from vertical to horizontal T5D09 What should you do if a "Part 15" device in your neighbor's home is causing harmful interference to your amateur station? Work with your neighbor to identify the offending device Politely inform your neighbor about the rules that require him to stop using the device if it causes interference Check your station and make sure it meets the standards of good amateur practice All of these answers are correct T5D10 What could be happening if another operator tells you he is hearing a variable high-pitched whine on the signals from your mobile transmitter? Your microphone is picking up noise from an open window You have the volume on your receiver set too high You need to adjust your squelch control The power wiring for your radio is picking up noise from the vehicle's electrical system T5D11 What may be the problem if another operator reports that your SSB signal is very garbled and breaks up? You have the noise limiter turned on The transmitter is too hot and needs to cool off RF energy may be getting into the microphone circuit and causing feedback You are operating on lower sideband T5D12 What might be the problem if you receive a report that your signal through the repeater is distorted or weak? Your transmitter may be slightly off frequency Your batteries may be running low You could be in a bad location All of these answers are correct T5D13 What is one of the reasons to use digital signals instead of analog signals to communicate with another station? Digital systems are less expensive than analog systems Many digital systems can automatically correct errors caused by noise and interference Digital modulation circuits are much less complicated than any other types All digital signals allow higher transmit power levels |
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