Category: Station Assembly, Practice and Safety - Canada Radio Amateur Quiz License

Questions in this category:

B-003-001-001: A low pass filter in an HF station is most effective when connected:
B-003-001-002: A low pass filter in an HF station is most effective when connected:
B-003-001-003: In designing an HF station, which component would you use to reduce the effects of harmonic radiation?
B-003-001-004: Which component in an HF station is the most useful for determining the effectiveness of the antenna system?
B-003-001-005: Of the components in an HF station, which component would normally be connected closest to the antenna, antenna tuner and dummy load?
B-003-001-006: Of the components in an HF station, which component would be used to match impedances between the transceiver and antenna?
B-003-001-007: In an HF station, which component is temporarily connected in the tuning process or for adjustments to the transmitter?
B-003-001-008: In an HF station, the antenna tuner is usually used for matching the transceiver with:
B-003-001-009: In an HF Station, the antenna tuner is commonly used:
B-003-002-001: In a frequency modulation transmitter, the input to the speech amplifier is connected to the:
B-003-002-002: In a frequency modulation transmitter, the microphone is connected to the:
B-003-002-003: In a frequency modulation transmitter, the ____________is in between the speech amplifier and the oscillator.
B-003-002-004: In a frequency modulation transmitter, the __________is located between the modulator and the frequency multiplier.
B-003-002-005: In a frequency modulation transmitter, the ___________is located between the oscillator and the power amplifier.
B-003-002-006: In a frequency modulation transmitter, the _________ is located between the frequency multiplier and the antenna.
B-003-002-007: In a frequency modulation transmitter, the power amplifier output is connected to the:
B-003-003-001: In a frequency modulation receiver, the ________is connected to the input of the radio frequency amplifier.
B-003-003-002: In a frequency modulation receiver, the __________ is in between the antenna and the mixer.
B-003-003-003: In a frequency modulation receiver, the output of the local oscillator is fed to the:
B-003-003-004: In a frequency modulation receiver, the output of the ________is connected to the mixer.
B-003-003-005: In a frequency modulation receiver, the_________ is in between the mixer and the intermediate frequency amplifier.
B-003-003-006: In a frequency modulation receiver, the ________ is located between the filter and the limiter.
B-003-003-007: In a frequency modulation receiver, the__________ is in between the intermediate frequency amplifier and the frequency discriminator.
B-003-003-008: In a frequency modulation receiver, the __________ is located between the limiter and the audio frequency amplifier.
B-003-003-009: In a frequency modulation receiver, the _________ is located between the speaker or headphones and the frequency discriminator.
B-003-003-010: In a frequency modulation receiver, the __________ connects to the audio frequency amplifier output.
B-003-004-001: In a CW transmitter, the output from the __________ is connected to the driver/buffer.
B-003-004-002: In a typical CW transmitter, the ___________ is the primary source of direct current.
B-003-004-003: In a CW transmitter, the_________ is between the master oscillator and the power amplifier.
B-003-004-004: In a CW transmitter, the_____________ controls when RF energy is applied to the antenna.
B-003-004-005: In a CW transmitter, the ______________ is in between the driver/buffer stage and the antenna.
B-003-004-006: In a CW transmitter, the output of the _____________ is transferred to the antenna.
B-003-005-001: In a single sideband and CW receiver, the antenna is connected to the ____________ .
B-003-005-002: In a single sideband and CW receiver, the output of the _____________ is connected to the mixer.
B-003-005-003: In a single sideband and CW receiver, the __________ is connected to the radio frequency amplifier and the local oscillator.
B-003-005-004: In a single sideband and CW receiver, the output of the ___________ is connected to the mixer.
B-003-005-005: In a single sideband and CW receiver, the _____________ is in between the mixer and intermediate frequency amplifier.
B-003-005-006: In a single sideband and CW receiver, the __________ is in between the filter and product detector.
B-003-005-007: In a single sideband and CW receiver, the __________ output is connected to the audio frequency amplifier.
B-003-005-008: In a single sideband and CW receiver, the output of the ___________ is connected to the product detector.
B-003-005-009: In a single sideband and CW receiver, the __________ is connected to the output of the product detector.
B-003-005-010: In a single sideband and CW receiver, the __________ is connected to the output of the audio frequency amplifier.
B-003-006-001: In a single sideband transmitter, the output of the ________ is connected to the balanced modulator.
B-003-006-002: In a single sideband transmitter, the output of the ____________ is connected to the filter.
B-003-006-003: In a single sideband transmitter, the _____________ is in between the balanced modulator and the mixer.
B-003-006-004: In a single sideband transmitter, the ______________ is connected to the speech amplifier.
B-003-006-005: In a single sideband transmitter, the output of the ___________ is connected to the balanced modulator.
B-003-006-006: In a single sideband transmitter, the output of the variable frequency oscillator is connected to the __________.
B-003-006-007: In a single sideband transmitter, the output of the _________ is connected to the mixer.
B-003-006-008: In an single sideband transmitter, the ____________ is in between the mixer and the antenna.
B-003-006-009: In a single sideband transmitter, the output of the linear amplifier is connected to the ______________.
B-003-007-001: In an amateur digital radio system, the __________________interfaces with the computer.
B-003-007-002: In an amateur digital radio system, the modem is connected to the ________.
B-003-007-003: In an amateur digital radio system, the transceiver is connected to the ___________.
B-003-007-004: In an amateur digital radio system, the audio connections of the modem/sound card are connected to the ___________.
B-003-007-005: In an amateur digital radio system, the modem function is often performed by the computer____________ .
B-003-008-001: In a regulated power supply, the transformer connects to an external source which is referred to as______________.
B-003-008-002: In a regulated power supply, the _______________ is between the input and the rectifier.
B-003-008-003: In a regulated power supply, the _______________ is between the transformer and the filter.
B-003-008-004: In a regulated power supply, the output of the rectifier is connected to the ______________.
B-003-008-005: In a regulated power supply, the output of the filter connects to the ____________________.
B-003-008-006: In a regulated power supply, the _______________is connected to the regulator.
B-003-009-001: In a Yagi 3 element directional antenna, the ____________ is primarily for mechanical support purposes.
B-003-009-002: In a Yagi 3 element directional antenna, the ________ is the longest radiating element.
B-003-009-003: In a Yagi 3 element directional antenna, the ______________ is the shortest radiating element.
B-003-009-004: In a Yagi 3 element directional antenna, the ______________is not the longest nor the shortest radiating element.
B-003-010-001: Which list of emission types is in order from the narrowest bandwidth to the widest bandwidth?
B-003-010-002: The figure in a receiver's specifications which indicates its sensitivity is the:
B-003-010-003: If two receivers of different sensitivity are compared, the less sensitive receiver will produce:
B-003-010-004: Which of the following modes of transmission is usually detected with a product detector?
B-003-010-005: A receiver designed for SSB reception must have a BFO (beat frequency oscillator) because:
B-003-010-006: A receiver receives an incoming signal of 3.54 MHz, and the local oscillator produces a signal of 3.995 MHz. To which frequency should the IF be tuned?
B-003-010-007: What kind of filter would you use to attenuate an interfering carrier signal while receiving an SSB transmission?
B-003-010-008: The three main parameters against which the quality of a receiver is measured are:
B-003-010-009: A communications receiver has four filters installed in it, respectively designated as 250 Hz, 500 Hz, 2.4 kHz, and 6 kHz. If you were listening to single sideband, which filter would you utilize?
B-003-010-010: A communications receiver has four filters installed in it, respectively designated as 250 Hz, 500 Hz, 2.4 kHz and 6 kHz. You are copying a CW transmission and there is a great deal of interference. Which one of the filters would you choose?
B-003-010-011: Selectivity can be placed in the audio stages of a receiver by the utilization of RC active or passive audio filters. If you were to copy CW, which of the following bandpasses would you choose?
B-003-011-001: What does chirp mean?
B-003-011-002: What can be done to keep a CW transmitter from chirping?
B-003-011-003: What circuit has a variable-frequency oscillator connected to a buffer/driver and a power amplifier?
B-003-011-004: What type of modulation system changes the amplitude of an RF wave for the purpose of conveying information?
B-003-011-005: In what emission type does the instantaneous amplitude (envelope) of the RF signal vary in accordance with the modulating audio?
B-003-011-006: Morse code is usually transmitted by radio as:
B-003-011-007: A mismatched antenna or transmission line may present an incorrect load to the transmitter. The result may be:
B-003-011-008: One result of a slight mismatch between the power amplifier of a transmitter and the antenna would be:
B-003-011-009: An RF oscillator should be electrically and mechanically stable. This is to ensure that the oscillator does not:
B-003-011-010: The input power to the final stage of your transmitter is 200 watts and the output is 125 watts. What has happened to the remaining power?
B-003-011-011: The difference between DC input power and RF output power of a transmitter RF amplifier:
B-003-012-001: What may happen if an SSB transmitter is operated with the microphone gain set too high?
B-003-012-002: What may happen if an SSB transmitter is operated with too much speech processing?
B-003-012-003: What is the term for the average power supplied to an antenna transmission line during one RF cycle, at the crest of the modulation envelope?
B-003-012-004: What is the usual bandwidth of a single-sideband amateur signal?
B-003-012-005: In a typical single-sideband phone transmitter, what circuit processes signals from the balanced modulator and sends signals to the mixer?
B-003-012-006: What is one advantage of carrier suppression in a double-sideband phone transmission?
B-003-012-007: What happens to the signal of an overmodulated single-sideband or double-sideband phone transmitter?
B-003-012-008: How should the microphone gain control be adjusted on a single-sideband phone transmitter?
B-003-012-009: The purpose of a balanced modulator in an SSB transmitter is to:
B-003-012-010: In a SSB transmission, the carrier is:
B-003-012-011: The automatic level control (ALC) in a SSB transmitter:
B-003-013-001: What may happen if an FM transmitter is operated with the microphone gain or deviation control set too high?
B-003-013-002: What may your FM hand-held or mobile transceiver do if you shout into its microphone and the deviation adjustment is set too high?
B-003-013-003: What can you do if you are told your FM hand-held or mobile transceiver is overdeviating?
B-003-013-004: What kind of emission would your FM transmitter produce if its microphone failed to work?
B-003-013-005: Why is FM voice best for local VHF/UHF radio communications?
B-003-013-006: What is the usual bandwidth of a frequency-modulated amateur signal for +/- 5kHz deviation?
B-003-013-007: What is the result of overdeviation in an FM transmitter?
B-003-013-008: What emission is produced by a reactance modulator connected to an RF power amplifier?
B-003-013-009: Why isn't frequency modulated (FM) phone used below 28.0 MHz?
B-003-013-010: You are transmitting FM on the 2 metre band. Several stations advise you that your transmission is loud and distorted. A quick check with a frequency counter tells you that the transmitter is on the proper frequency. Which of the following is the most probable cause of the distortion?
B-003-013-011: FM receivers perform in an unusual manner when two or more stations are present. The strongest signal, even though it is only two or three times stronger than the other signals, will be the only transmission demodulated. This is called:
B-003-014-001: What do many amateurs use to help form good Morse code characters?
B-003-014-002: Where would you connect a microphone for voice operation?
B-003-014-003: What would you connect to a transceiver for voice operation?
B-003-014-004: Why might a dummy antenna get warm when in use?
B-003-014-005: What is the circuit called which causes a transmitter to automatically transmit when an operator speaks into its microphone?
B-003-014-006: What is the reason for using a properly adjusted speech processor with a single-sideband phone transmitter?
B-003-014-007: If a single-sideband phone transmitter is 100% modulated, what will a speech processor do to the transmitter's power?
B-003-014-008: When switching from receive to transmit:
B-003-014-009: A switching system to enable the use of one antenna for a transmitter and receiver should also:
B-003-014-010: An antenna changeover switch in a transmitter-receiver combination is necessary:
B-003-014-011: Which of the following components could be used as a dynamic microphone?
B-003-015-001: What does ""connected"" mean in an AX.25 packet-radio link?
B-003-015-002: What does ""monitoring"" mean on a packet-radio frequency?
B-003-015-003: What is a digipeater?
B-003-015-004: What does ""network"" mean in packet radio?
B-003-015-005: In AX.25 packet-radio operation, what equipment connects to a terminal-node controller?
B-003-015-006: How would you modulate a 2 meter FM transceiver to produce packet-radio emissions?
B-003-015-007: When selecting a RTTY transmitting frequency, what minimum frequency separation from a contact in progress should you allow (center to center) to minimize interference?
B-003-015-008: Digital transmissions use signals called __________ to transmit the states 1 and 0:
B-003-015-009: Which of the following terms does not apply to packet radio?
B-003-015-010: When using AMTOR transmissions, there are two modes that may be utilized. Mode A uses Automatic Repeat Request (ARQ) protocol and is normally used:
B-003-015-011: With a digital communication mode based on a computer sound card, what is the result of feeding too much audio in the transceiver?
B-003-016-001: How much voltage does a standard automobile battery usually supply?
B-003-016-002: Which component has a positive and a negative side?
B-003-016-003: A cell, that can be repeatedly recharged by supplying it with electrical energy, is known as a:
B-003-016-004: Which of the following is a source of electromotive force (EMF)?
B-003-016-005: An important difference between a conventional flashlight battery and a lead acid battery is that only the lead acid battery:
B-003-016-006: An alkaline cell has a nominal voltage of 1.5 volts. When supplying a great deal of current, the voltage may drop to 1.2 volts. This is caused by the cell's:
B-003-016-007: An inexpensive primary cell in use today is the carbon-zinc or flashlight cell. This type of cell can be recharged:
B-003-016-008: Battery capacity is commonly stated as a value of current delivered over a specified period of time. What is the effect of exceeding that specified current?
B-003-016-009: To increase the current capacity of a cell, several cells should be connected in:
B-003-016-010: To increase the voltage output, several cells are connected in:
B-003-016-011: A lithium-ion battery should never be:
B-003-017-001: If your mobile transceiver works in your car but not in your home, what should you check first?
B-003-017-002: What device converts household current to 12 volts DC?
B-003-017-003: Which of these usually needs a high current capacity power supply?
B-003-017-004: What may cause a buzzing or hum in the signal of an AC-powered transmitter?
B-003-017-005: A power supply is to supply DC at 12 volts at 5 amperes. The power transformer should be rated higher than:
B-003-017-006: The diode is an important part of a simple power supply. It converts AC to DC, since it:
B-003-017-007: To convert AC to pulsating DC, you could use a:
B-003-017-008: Power-line voltages have been made standard over the years and the voltages generally supplied to homes are approximately:
B-003-017-009: Your mobile HF transceiver draws 22 amperes on transmit. The manufacturer suggests limiting voltage drop to 0.5 volt and the vehicle battery is 3 metres (10 feet) away. Given the losses below at that current, which minimum wire gauge must you use?
B-003-017-010: Why are fuses needed as close as possible to the vehicle battery when wiring a transceiver directly to the battery?
B-003-017-011: You have a very loud low-frequency hum appearing on your transmission. In what part of the transmitter would you first look for the trouble?
B-003-018-001: How could you best keep unauthorized persons from using your amateur station at home?
B-003-018-002: How could you best keep unauthorized persons from using a mobile amateur station in your car?
B-003-018-003: Why would you use a key-operated on/off switch in the main power line of your station?
B-003-018-004: Why would there be a switch in a high-voltage power supply to turn off the power if its cabinet is opened?
B-003-018-005: How little electrical current flowing through the human body can be fatal?
B-003-018-006: Which body organ can be fatally affected by a very small amount of electrical current?
B-003-018-007: What is the minimum voltage which is usually dangerous to humans?
B-003-018-008: What should you do if you discover someone who is being burned by high voltage?
B-003-018-009: What is the safest method to remove an unconscious person from contact with a high voltage source?
B-003-018-010: Before checking a fault in a mains operated power supply unit, it would be safest to first:
B-003-018-011: Fault finding in a power supply of an amateur transmitter while the supply is operating is not a recommended technique because of the risk of:
B-003-019-001: For best protection from electrical shock, what should be grounded in an amateur station?
B-003-019-002: If a separate ground system is not possible for your amateur station, an alternative indoor grounding point could be:
B-003-019-003: To protect you against electrical shock, the chassis of each piece of your station equipment should be connected to:
B-003-019-004: Which of these materials is best for a ground rod driven into the earth?
B-003-019-005: If you ground your station equipment to a ground rod driven into the earth, what is the shortest length the rod should be?
B-003-019-006: Where should the green wire in a three-wire AC line cord be connected in a power supply?
B-003-019-007: If your third-floor amateur station has a ground wire running 10 metres (33 feet) down to a ground rod, why might you get an RF burn if you touch the front panel of your HF transceiver?
B-003-019-008: What is one good way to avoid stray RF energy in your amateur station?
B-003-019-009: Which statement about station grounding is true?
B-003-019-010: On mains operated power supplies, the ground wire should be connected to the metal chassis of the power supply. This ensures, in case there is a fault in the power supply, that the chassis:
B-003-019-011: The purpose of using a three-wire power cord and plug on amateur radio equipment is to:
B-003-020-001: Why should you ground all antenna and rotator cables when your amateur station is not in use?
B-003-020-002: You want to install a lightning arrestor on your antenna transmission line, where should it be inserted?
B-003-020-003: How can amateur station equipment best be protected from lightning damage?
B-003-020-004: What equipment should be worn for working on an antenna tower?
B-003-020-005: Why should you wear approved fall arrest equipment if you are working on an antenna tower?
B-003-020-006: For safety, how high should you place a horizontal wire antenna?
B-003-020-007: Why should you wear a hard hat if you are on the ground helping someone work on an antenna tower?
B-003-020-008: Why should your outside antennas be high enough so that no one can touch them while you are transmitting?
B-003-020-009: Why should you make sure that no one can touch an open wire transmission line while you are transmitting with it?
B-003-020-010: What safety precautions should you take before beginning repairs on an antenna?
B-003-020-011: What precaution should you take when installing a ground-mounted antenna?
B-003-021-001: What should you do for safety when operating at UHF and microwave frequencies?
B-003-021-002: What should you do for safety if you put up a UHF transmitting antenna?
B-003-021-003: What should you do for safety, before removing the shielding on a UHF power amplifier?
B-003-021-004: Why should you make sure the antenna of a hand-held transceiver is not close to your head when transmitting?
B-003-021-005: How should you position the antenna of a hand-held transceiver while you are transmitting?
B-003-021-006: How can exposure to a large amount of RF energy affect body tissue?
B-003-021-007: Which body organ is the most likely to be damaged from the heating effects of RF radiation?
B-003-021-008: Depending on the wavelength of the signal, the energy density of the RF field, and other factors, in what way can RF energy affect body tissue?
B-003-021-009: If you operate your amateur station with indoor antennas, what precautions should you take when you install them?
B-003-021-010: Why should directional high-gain antennas be mounted higher than nearby structures?
B-003-021-011: For best RF safety, where should the ends and center of a dipole antenna be located?