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Questions in US Amateur Radio - Amateur Extra 2002

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NameQuestion Study
E1A03What exclusive frequency privileges in the 40-meter band are authorized to Amateur Extra class control operators?Start
E1A04What exclusive frequency privileges in the 20-meter band are authorized to Amateur Extra Class control operators?Start
E1A05What exclusive frequency privileges in the 15-meter band are authorized to Amateur Extra Class control operators?Start
E1A06Which frequency bands contain at least one segment authorized to only control operators holding an Amateur Extra Class operator license?Start
E1A07Within the 20-meter band, what is the amount of spectrum authorized to only control operators holding an Amateur Extra Class operator license?Start
E1A08Which frequency bands contain two segments authorized to only control operators holding an Amateur Extra Class operator license, CEPT radio-amateur Class 1 license or Class 1 IARP?Start
E1A09What must an amateur station licensee do if a spurious emission from the station causes harmful interference to the reception of another radio station?Start
E1A12What is the maximum mean power permitted to any spurious emission from a transmitter or external RF power amplifier transmitting at a mean power greater than 25 watts on an amateur service VHF band?Start
E1A13What is the maximum mean power permitted for any spurious emission from a transmitter having a mean power of 25 W or less on an amateur service VHF band?Start
E1A14If a packet bulletin board station in a message forwarding system inadvertently forwards a message that is in violation of FCC rules, who is accountable for the rules violation?Start
E1A15If your packet bulletin board station inadvertently forwards a communication that violates FCC rules, what is the first action you should take?Start
E1A16For each ITU Region, how is each frequency band allocated internationally to the amateur service designated?Start
E1A17Why might the FCC modify an amateur station license?Start
E1A18What are the sharing requirements for an amateur station transmitting in the 30- meter band?Start
E1A19If an amateur station is installed on board a ship and is separate from the ship radio installation, what condition must be met before the station may transmit?Start
E1A20What is the definition of the term telemetry?Start
E1A21What is the definition of the term telecommand?Start
E1A22When may an amateur station transmit special codes intended to obscure the meaning of messages?Start
E1B01Which of the following factors might restrict the physical location of an amateur station apparatus or antenna structure?Start
E1B02Outside of what distance from an FCC monitoring facility may an amateur station be located without concern for protecting the facility from harmful interference?Start
E1B03What must be done before an amateur station is placed within an officially designated wilderness area or wildlife preserve, or an area listed in the National Register of Historical Places?Start
E1B04If an amateur station causes interference to the reception of a domestic broadcast station with a receiver of good engineering design, on what frequencies may the operation of the amateur station be restricted?Start
E1B05When may an amateur operator accept compensation for serving as the control operator of an amateur station used in a classroom?Start
E1B06Who may accept compensation for serving as a control operator in a classroom at an educational institution?Start
E1B07If an amateur antenna structure is located in a valley or canyon, what height restrictions apply?Start
E1B08What limits must local authorities observe when legislating height and dimension restrictions for an amateur station antenna structure?Start
E1B09If you are installing an amateur radio station antenna at a site within 5 miles from a public use airport, what additional rules apply?Start
E1B10What is meant by a remotely controlled station?Start
E1B11Which of the following amateur stations may not be operated under automatic control?Start
E1B12What is meant by automatic control of a station?Start
E1B13How do the control operator responsibilities of a station under automatic control differ from one under local control?Start
E1B14What is a control link?Start
E1B15What is the term for apparatus to effect remote control between the control point and a remotely controlled station?Start
E1C01What is an FCC authorization for alien reciprocal operation?Start
E1C02Who is authorized for alien reciprocal operation in places where the FCC regulates the amateur service?Start
E1C03What are the frequency privileges authorized for alien reciprocal operation?Start
E1C04What indicator must a Canadian amateur station include with the assigned call sign in the station identification announcement when operating in the US?Start
E1C05When may a US citizen holding a foreign amateur service license be authorized for alien reciprocal operation in places where the FCC regulates the amateur service?Start
E1C06Which of the following would disqualify a foreign amateur operator from being authorized for alien reciprocal operation in places where the FCC regulates the amateur service?Start
E1C07What special document is required before a Canadian citizen holding a Canadian amateur service license may reciprocal operate in the US?Start
E1C08What operating privileges does a properly licensed alien amateur have in the US, if the US and the alien amateur's home country have a multilateral or bilateral reciprocal operating agreement?Start
E1C09From which locations may a licensed alien amateur operator be the control operator of an amateur station?Start
E1C10Which of the following operating arrangements allow an FCC licensed US citizen to operate in many European countries and alien amateurs from many European countries to operate in the US?Start
E1C11Which of the following multilateral or bilateral operating arrangements allow an FCC licensed US citizen and many Central and South American amateur operators to operate in each other's countries?Start
E1C12What additional station identification, in addition to his or her own call sign, does an alien operator supply when operating in the US under an FCC authorization for alien reciprocal operation?Start
E1D01What is the Radio Amateur Civil Emergency Service (RACES)?Start
E1D02What is the purpose of RACES?Start
E1D03With what organization must an amateur station be registered before participating in RACES?Start
E1D04Which amateur stations may be operated in RACES?Start
E1D05What frequencies are authorized normally to an amateur station participating in RACES?Start
E1D06What are the frequencies authorized to an amateur station participating in RACES during a period when the President's War Emergency Powers are in force?Start
E1D07What frequencies are normally available for RACES operation?Start
E1D08What type of emergency can cause limits to be placed on the frequencies available for RACES operation?Start
E1D09Who may be the control operator of a RACES station?Start
E1D10With which stations may amateur stations participating in RACES communicate?Start
E1D11What communications are permissible in RACES?Start
E1E01What is the amateur-satellite service?Start
E1E02What is a space station in the amateur-satellite service?Start
E1E03What is a telecommand station in the amateur-satellite service?Start
E1E04What is an earth station in the amateur-satellite service?Start
E1E06Which amateur stations are eligible to operate as a space station?Start
E1E07What special provision must a space station incorporate in order to comply with space station requirements?Start
E1E09Which amateur service HF bands have frequencies authorized to space stations?Start
E1E10Which VHF amateur service bands have frequencies available for space stations?Start
E1E11Which amateur service UHF bands have frequencies available for a space station?Start
E1E12Which amateur stations are eligible to be telecommand stations?Start
E1E13What unique privilege is afforded a telecommand station?Start
E1E14What is the term for space-to-Earth transmissions used to communicate the results of measurements made by a space station?Start
E1E15Which amateur stations are eligible to operate as Earth stations?Start
E1F01Who may prepare an Element 4 amateur operator license examination?Start
E1F02Where are the questions listed that must be used in all written US amateur license examinations?Start
E1F03Who is responsible for maintaining the question pools from which all amateur license examination questions must be taken?Start
E1F07What is the purpose of an Element 4 examination?Start
E1F08What is a Volunteer-Examiner Coordinator?Start
E1F09What is an accredited Volunteer Examiner?Start
E1F10What is a VE Team?Start
E1F11Which persons seeking to be VEs cannot be accredited?Start
E1F12What is the VE accreditation process?Start
E1F13Where must the VE team be stationed while administering an examination?Start
E1F14Who is responsible for the proper conduct and necessary supervision during an amateur operator license examination session?Start
E1F15What should a VE do if a candidate fails to comply with the examiner's instructions during an amateur operator license examination?Start
E1F16What special procedures must a VE team follow for an examinee with a physical disability?Start
E1F17To which of the following examinees may a VE not administer an examination?Start
E1F18What may be the penalty for a VE who fraudulently administers or certifies an examination?Start
E1F19What must the VE team do with your test papers when you have finished this examination?Start
E1F21What must the VE team do if an examinee scores a passing grade on all examination elements needed for an upgrade or new license?Start
E1F22What must the VE team do if the examinee does not score a passing grade on the examination?Start
E1F23What are the consequences of failing to appear for readministration of an examination when so directed by the FCC?Start
E1F24What are the types of out-of-pocket expenses for which the FCC rules authorize a VE and VEC to accept reimbursement?Start
E1F25How much reimbursement may the VE team and VEC accept for preparing, processing, administering and coordinating an examination?Start
E1G01What does it mean if an external RF amplifier is listed on the FCC database as certificated for use in the amateur service?Start
E1G03Under what condition may an equipment dealer sell an external RF power amplifier capable of operation below 144 MHz if it has not been granted FCC certification?Start
E1G04Which of the following geographic descriptions approximately describes Line A?Start
E1G05Amateur stations may not transmit in which frequency segment if they are located north of Line A?Start
E1G06What is the National Radio Quiet Zone?Start
E1G07What type of automatically controlled amateur station must not be established in the National Radio Quiet Zone before the licensee gives written notification to the National Radio Astronomy Observatory?Start
E1G08When may the control operator of a repeater accept payment for providing communication services to another party?Start
E1G09When may an amateur station send a message to a business?Start
E1G10Which of the following types of amateur operator-to-amateur operator communication are prohibited?Start
E1G11What is the term for emissions using bandwidth-expansion modulation?Start
E1G12FCC-licensed amateur stations may use spread spectrum (SS) emissions to communicate under which of the following conditions?Start
E1G13Under any circumstance, what is the maximum transmitter power for an amateur station transmitting emission type SS communications?Start
E1G14What of the following is a use for an auxiliary station?Start
E2A01What is the direction of an ascending pass for an amateur satellite?Start
E2A02What is the direction of a descending pass for an amateur satellite?Start
E2A03What is the period of an amateur satellite?Start
E2A04What are the receiving and retransmitting frequency bands used for Mode V/H in amateur satellite operations?Start
E2A05What are the receiving and retransmitting frequency bands used for Mode U/V in amateur satellite operations?Start
E2A06What are the receiving and retransmitting frequency bands used for Mode V/U in amateur satellite operations?Start
E2A07What are the receiving and retransmitting frequency bands used for Mode L/U in amateur satellite operations?Start
E2A08What is a linear transponder?Start
E2A09What is the name of the effect that causes the downlink frequency of a satellite to vary by several kHz during a low-earth orbit?Start
E2A10Why may the received signal from an amateur satellite exhibit a fairly rapid pulsed fading effect?Start
E2A11What type of antenna can be used to minimize the effects of spin modulation and Faraday rotation?Start
E2A12How may the location of a satellite at a given time be predicted?Start
E2B01How many times per second is a new frame transmitted in a fast-scan television system?Start
E2B02How many horizontal lines make up a fast-scan television frame?Start
E2B03How is the interlace scanning pattern generated in a fast-scan television system?Start
E2B04What is blanking in a video signal?Start
E2B05What is the bandwidth of a vestigial sideband AM fast-scan television transmission?Start
E2B06What is the standard video level, in percent PEV, for black in amateur fast scan television?Start
E2B07What is the standard video level, in percent PEV, for blanking in amateur fast scan television?Start
E2B08Which of the following is NOT a common method of transmitting accompanying audio with amateur fast-scan television?Start
E2B09What is facsimile?Start
E2B10What is the modern standard scan rate for a fax image transmitted by an amateur station?Start
E2B11What is the approximate transmission time per frame for a fax picture transmitted by an amateur station at 240 lpm?Start
E2B12What information is sent by slow-scan television transmissions?Start
E2B13How many lines are commonly used in each frame on an amateur slow-scan color television picture?Start
E2B14What is the audio frequency for black in an amateur slow-scan television picture?Start
E2B15What is the audio frequency for white in an amateur slow-scan television picture?Start
E2B16What is the standard video level, in percent PEV, for white in an amateur fast- scan television transmission?Start
E2B17Which of the following is NOT a characteristic of FMTV (Frequency-Modulated Amateur Television) as compared to vestigial sideband AM television?Start
E2B18What is the approximate bandwidth of a slow-scan TV signal?Start
E2B19Which of the following systems is used to transmit high-quality still images by radio?Start
E2B20What special restrictions are imposed on fax transmissions?Start
E2C01When operating during a contest, which of these standards should you generally follow?Start
E2C02What is one of the main purposes for holding on-the-air operating contests?Start
E2C03Which of the following is typical of operations during an international amateur DX contest?Start
E2C04If a DX station asks for your grid square locator, what should be your reply?Start
E2C05What does a Maidenhead gridsquare refer to?Start
E2C06During a VHF/UHF contest, in which band section would you expect to find the highest level of contest activity?Start
E2C07If you are in the US calling a station in Texas on a frequency of 1832 kHz and a station replies that you are in the window, what does this mean?Start
E2C08Why are received spread-spectrum signals so resistant to interference?Start
E2C09How does the spread-spectrum technique of frequency hopping (FH) work?Start
E2C10While participating in an HF contest, how should you attempt to contact a station calling CQ and stating that he is listening on another specific frequency?Start
E2C11When operating SSB in a VHF contest, how should you attempt to contact a station calling CQ while a pileup of other stations are also trying to contact the same station?Start
E2C12In North America during low sunspot activity, signals from Europe become weak and fluttery across an entire HF band two to three hours after sunset, what might help to contact other European DX stations?Start
E2D01What does CMD: mean when it is displayed on the video monitor of a packet station?Start
E2D02What is a Packet Cluster Bulletin Board?Start
E2D03In comparing HF and 2-meter packet Operations, which of the following is NOT true?Start
E2D04What is the purpose of a digital store and forward on an Amateur satellite?Start
E2D05Which of the following techniques is normally used by low-earth orbiting digital satellites to relay messages around the world?Start
E2D06What is the common 2-meter APRS frequency?Start
E2D07Which of the following digital protocols does APRS use?Start
E2D08Which of the following types of packet frames is used to transmit APRS beacon data?Start
E2D09Under clear communications conditions, which of these digital communications modes has the fastest data throughput?Start
E2D10How can an APRS station be used to help support a public service communications activity, such as a walk-a-thon?Start
E2D11Which of the following data sources are needed to accurately transmit your geographical location over the APRS network?Start
E2E01What is the most common method of transmitting data emissions below 30 MHz?Start
E2E02What do the letters FEC mean as they relate to AMTOR operation?Start
E2E03How is Forward Error Correction implemented?Start
E2E04If an oscilloscope is connected to a TNC or terminal unit and is displaying two crossed ellipses, one of which suddenly disappears, what would this indicate about the observed signal?Start
E2E05What is the name for a bulletin transmission system that includes a special header to allow receiving stations to determine if the bulletin has been previously received?Start
E2E06What is the most common data rate used for HF packet communications?Start
E2E07What is the typical bandwidth of a properly modulated MFSK16 signal?Start
E2E08Which of the following HF digital modes can be used to transfer binary files?Start
E2E11What is the Baudot code?Start
E2E12Which of these digital communications modes has the narrowest bandwidth?Start
E3A01What is the maximum separation between two stations communicating by moonbounce?Start
E3A02What characterizes libration fading of an earth-moon-earth signal?Start
E3A03When scheduling EME contacts, which of these conditions will generally result in the least path loss?Start
E3A04What type of receiving system is desirable for EME communications?Start
E3A05What transmit and receive time sequencing is normally used on 144 MHz when attempting an earth-moon-earth contact?Start
E3A06What transmit and receive time sequencing is normally used on 432 MHz when attempting an EME contact?Start
E3A07What frequency range would you normally tune to find EME stations in the 2-meter band?Start
E3A08What frequency range would you normally tune to find EME stations in the 70-cm band?Start
E3A09When a meteor strikes the earth's atmosphere, a cylindrical region of free electrons is formed at what layer of the ionosphere?Start
E3A10Which range of frequencies is well suited for meteor-scatter communications?Start
E3A11What transmit and receive time sequencing is normally used on 144 MHz when attempting a meteor-scatter contact?Start
E3B01What is transequatorial propagation?Start
E3B02What is the approximate maximum range for signals using transequatorial propagation?Start
E3B03What is the best time of day for transequatorial propagation?Start
E3B04What type of propagation is probably occurring if an HF beam antenna must be pointed in a direction 180 degrees away from a station to receive the strongest signals?Start
E3B05On what amateur bands can long-path propagation provide signal enhancement?Start
E3B06What amateur band consistently yields long-path enhancement using a modest antenna of relatively high gain?Start
E3B07What is the typical reason for hearing an echo on the received signal of a station in Europe while directing your HF antenna toward the station?Start
E3B08What type of propagation is probably occurring if radio signals travel along the terminator between daylight and darkness?Start
E3B09At what time of day is gray-line propagation most prevalent?Start
E3B10What is the cause of gray-line propagation?Start
E3B11What communications are possible during gray-line propagation?Start
E3C01What effect does auroral activity have upon radio communications?Start
E3C02What is the cause of auroral activity?Start
E3C03Where in the ionosphere does auroral activity occur?Start
E3C04Which emission mode is best for auroral propagation?Start
E3C05What causes selective fading?Start
E3C06How does the bandwidth of a transmitted signal affect selective fading?Start
E3C07How much farther does the VHF/UHF radio-path horizon distance exceed the geometric horizon?Start
E3C08For a 3-element beam antenna with horizontally mounted elements, how does the main lobe takeoff angle vary with height above flat ground?Start
E3C09What is the name of the high-angle wave in HF propagation that travels for some distance within the F2 region?Start
E3C10What effect is usually responsible for propagating a VHF signal over 500 miles?Start
E3C11For a 3-element beam antenna with horizontally mounted elements, how does the main lobe takeoff angle vary with the downward slope of the ground (moving away from the antenna)?Start
E3C12In the northern hemisphere, in which direction should a directional antenna be pointed to take maximum advantage of auroral propagation?Start
E3C13As the frequency of a signal is increased, how does its ground wave propagation change?Start
E3C14What typical polarization does ground-wave propagation have?Start
E3C15Why does the radio-path horizon distance exceed the geometric horizon?Start
E4A01How does a spectrum analyzer differ from a conventional time-domain oscilloscope?Start
E4A02What parameter does the horizontal axis of a spectrum analyzer display?Start
E4A03What parameter does the vertical axis of a spectrum analyzer display?Start
E4A04Which test instrument is used to display spurious signals from a radio transmitter?Start
E4A05Which test instrument is used to display intermodulation distortion products in an SSB transmission?Start
E4A06Which of the following is NOT something that could be determined with a spectrum analyzer?Start
E4A07What is an advantage of using a spectrum analyzer to observe the output from a VHF transmitter?Start
E4A08What advantage does a logic probe have over a voltmeter for monitoring the status of a logic circuit?Start
E4A09Which test instrument is used to directly indicate high and low digital voltage states?Start
E4A10What can a logic probe indicate about a digital logic circuit?Start
E4A11Which of the following test instruments can be used to indicate pulse conditions in a digital logic circuit?Start
E4A12Which of the following procedures should you follow when connecting a spectrum analyzer to a transmitter output?Start
E4B01What is a frequency standard?Start
E4B02What factors limit the accuracy, frequency response and stability of a frequency counter?Start
E4B03How can the accuracy of a frequency counter be improved?Start
E4B04If a frequency counter with a specified accuracy of +/- 1.0 ppm reads 146,520,000 Hz, what is the most the actual frequency being measured could differ from the reading?Start
E4B05If a frequency counter with a specified accuracy of +/- 0.1 ppm reads 146,520,000 Hz, what is the most the actual frequency being measured could differ from the reading?Start
E4B06If a frequency counter with a specified accuracy of +/- 10 ppm reads 146,520,000 Hz, what is the most the actual frequency being measured could differ from the reading?Start
E4B07If a frequency counter with a specified accuracy of +/- 1.0 ppm reads 432,100,000 Hz, what is the most the actual frequency being measured could differ from the reading?Start
E4B08If a frequency counter with a specified accuracy of +/- 0.1 ppm reads 432,100,000 Hz, what is the most the actual frequency being measured could differ from the reading?Start
E4B09If a frequency counter with a specified accuracy of +/- 10 ppm reads 432,100,000 Hz, what is the most the actual frequency being measured could differ from the reading?Start
E4B10If a 100 Hz signal is fed to the horizontal input of an oscilloscope and a 150 Hz signal is fed to the vertical input, what type of Lissajous figure will be displayed on the screen?Start
E4B11What is a dip-meter?Start
E4B12What does a dip-meter do?Start
E4B13How does a dip-meter function?Start
E4B14What two ways could a dip-meter be used in an amateur station?Start
E4B15For best accuracy, how tightly should a dip-meter be coupled with the LC circuit being checked?Start
E4B16What factors limit the accuracy, frequency response and stability of an oscilloscope?Start
E4B17What happens in a dip-meter when it is too tightly coupled with a tuned circuit being checked?Start
E4B18What factors limit the accuracy, frequency response and stability of a D'Arsonval-type meter?Start
E4B19How can the frequency response of an oscilloscope be improved?Start
E4C01What is the effect of excessive phase noise in the local oscillator section of a receiver?Start
E4C02What is the term for the reduction in receiver sensitivity caused by a strong signal near the received frequency?Start
E4C03Which of the following can cause receiver desensitization?Start
E4C04Which of the following is one way receiver desensitization can be reduced?Start
E4C05What is the FM capture effect?Start
E4C06What is the term for the blocking of one FM phone signal by another, stronger FM phone signal?Start
E4C07What is meant by the noise floor of a receiver?Start
E4C08What is the blocking dynamic range for a receiver that has an 8-dB noise figure and an IF bandwidth of 500 Hz when the blocking level (1-dB compression point) is -20 dBm?Start
E4C09What is meant by the dynamic range of a communications receiver?Start
E4C10What type of problems are caused by poor dynamic range in a communications receiver?Start
E4C11If you measured the MDS of a receiver, what would you be measuring?Start
E4C12How does intermodulation interference between two repeater transmitters usually occur?Start
E4C13How can intermodulation interference between two repeater transmitters in close proximity often be reduced or eliminated?Start
E4C14If a receiver tuned to 146.70 MHz receives an intermodulation-product signal whenever a nearby transmitter transmits on 146.52 MHz, what are the two most likely frequencies for the other interfering signal?Start
E4C15If the signals of two transmitters mix together in one or both of their final amplifiers and unwanted signals at the sum and difference frequencies of the original signals are generated, what is this called?Start
E4C16What is cross-modulation interference?Start
E4C17What causes intermodulation in an electronic circuit?Start
E4C18What two factors determine the sensitivity of a receiver?Start
E4C19What is the limiting condition for sensitivity in a communications receiver?Start
E4C20Selectivity can be achieved in the front-end circuitry of a communications receiver by using what means?Start
E4C21What degree of selectivity is desirable in the IF circuitry of an amateur RTTY receiver?Start
E4C22What degree of selectivity is desirable in the IF circuitry of a single-sideband phone receiver?Start
E4C23What is an undesirable effect of using too wide a filter bandwidth in the IF section of a receiver?Start
E4C24How should the filter bandwidth of a receiver IF section compare with the bandwidth of a received signal?Start
E4C25What degree of selectivity is desirable in the IF section of an FM phone receiver?Start
E4C27In a receiver, if the second-order intermodulation products have a power of-70 dBm when using two test tones at -30 dBm, what is the second-order intercept point?Start
E4D01What is one of the most significant problems associated with reception in HF transceivers?Start
E4D02What is the proper procedure for suppressing electrical noise in a mobile transceiver?Start
E4D03Where should ferrite beads be installed to suppress ignition noise in a mobile transceiver?Start
E4D04How can alternator whine be minimized?Start
E4D05How can conducted and radiated noise caused by an automobile alternator be suppressed?Start
E4D06How can noise from an electric motor be suppressed?Start
E4D07What is a major cause of atmospheric static?Start
E4D08How can it be determined if line-noise interference is being generated within your home?Start
E4D09What type of signal is picked up by electrical wiring near a radio transmitter?Start
E4D10Which of the following types of equipment would be least useful in locating power line noise?Start
E4E01What circuit construction technique uses leadless components mounted between circuit board pads?Start
E4E02What is the main drawback of a wire-loop antenna for direction finding?Start
E4E03What pattern is desirable for a direction-finding antenna?Start
E4E04What is the triangulation method of direction finding?Start
E4E05Why is an RF attenuator desirable in a receiver used for direction finding?Start
E4E06What is a sense antenna?Start
E4E07What is a loop antenna?Start
E4E08How can the output voltage of a loop antenna be increased?Start
E4E09Why is an antenna with a cardioid pattern desirable for a direction-finding system?Start
E4E10What type of terrain can cause errors in direction finding?Start
E4E11What is the amateur station activity known as fox hunting?Start
E5A01What can cause the voltage across reactances in series to be larger than the voltage applied to them?Start
E5A02What is resonance in an electrical circuit?Start
E5A03What are the conditions for resonance to occur in an electrical circuit?Start
E5A04When the inductive reactance of an electrical circuit equals its capacitive reactance, what is this condition called?Start
E5A05What is the magnitude of the impedance of a series R-L-C circuit at resonance?Start
E5A06What is the magnitude of the impedance of a circuit with a resistor, an inductor and a capacitor all in parallel, at resonance?Start
E5A07What is the magnitude of the current at the input of a series R-L-C circuit at resonance?Start
E5A08What is the magnitude of the circulating current within the components of a parallel L-C circuit at resonance?Start
E5A09What is the magnitude of the current at the input of a parallel R-L-C circuit at resonance?Start
E5A10What is the relationship between the current through a resonant circuit and the voltage across the circuit?Start
E5A11What is the relationship between the current into (or out of) a parallel resonant circuit and the voltage across the circuit?Start
E5A12What is the half-power bandwidth of a parallel resonant circuit that has a resonant frequency of 1.8 MHz and a Q of 95?Start
E5A13What is the half-power bandwidth of a parallel resonant circuit that has a resonant frequency of 7.1 MHz and a Q of 150?Start
E5A14What is the half-power bandwidth of a parallel resonant circuit that has a resonant frequency of 14.25 MHz and a Q of 150?Start
E5A15What is the half-power bandwidth of a parallel resonant circuit that has a resonant frequency of 21.15 MHz and a Q of 95?Start
E5A16What is the half-power bandwidth of a parallel resonant circuit that has a resonant frequency of 3.7 MHz and a Q of 118?Start
E5A17What is the half-power bandwidth of a parallel resonant circuit that has a resonant frequency of 14.25 MHz and a Q of 187?Start
E5A18What is the resonant frequency of a series RLC circuit if R is 47 ohms, L is 50 microhenrys and C is 40 picofarads?Start
E5A19What is the resonant frequency of a series RLC circuit if R is 47 ohms, L is 40 microhenrys and C is 200 picofarads?Start
E5A20What is the resonant frequency of a series RLC circuit if R is 47 ohms, L is 50 microhenrys and C is 10 picofarads?Start
E5A21What is the resonant frequency of a series RLC circuit if R is 47 ohms, L is 25 microhenrys and C is 10 picofarads?Start
E5A22What is the resonant frequency of a series RLC circuit if R is 47 ohms, L is 3 microhenrys and C is 40 picofarads?Start
E5A23What is the resonant frequency of a series RLC circuit if R is 47 ohms, L is 4 microhenrys and C is 20 picofarads?Start
E5A24What is the resonant frequency of a series RLC circuit if R is 47 ohms, L is 8 microhenrys and C is 7 picofarads?Start
E5A25What is the resonant frequency of a series RLC circuit if R is 47 ohms, L is 3 microhenrys and C is 15 picofarads?Start
E5B01What is the term for the time required for the capacitor in an RC circuit to be charged to 63.2% of the supply voltage?Start
E5B02What is the term for the time required for the current in an RL circuit to build up to 63.2% of the maximum value?Start
E5B03What is the term for the time it takes for a charged capacitor in an RC circuit to discharge to 36.8% of its initial value of stored charge?Start
E5B04The capacitor in an RC circuit is charged to what percentage of the supply voltage after two time constants?Start
E5B05The capacitor in an RC circuit is discharged to what percentage of the starting voltage after two time constants?Start
E5B06What is the time constant of a circuit having two 100-microfarad capacitors and two 470-kilohm resistors all in series?Start
E5B07What is the time constant of a circuit having two 220-microfarad capacitors and two 1-megohm resistors all in parallel?Start
E5B08What is the time constant of a circuit having a 220-microfarad capacitor in series with a 470-kilohm resistor?Start
E5B09How long does it take for an initial charge of 20 V DC to decrease to 7.36 V DC in a 0.01-microfarad capacitor when a 2-megohm resistor is connected across it?Start
E5B10How long does it take for an initial charge of 20 V DC to decrease to 0.37 V DC in a 0.01-microfarad capacitor when a 2-megohm resistor is connected across it?Start
E5B11How long does it take for an initial charge of 800 V DC to decrease to 294 V DC in a 450-microfarad capacitor when a 1-megohm resistor is connected across it?Start
E5C01What type of graph can be used to calculate impedance along transmission lines?Start
E5C02What type of coordinate system is used in a Smith chart?Start
E5C03What type of calculations can be performed using a Smith chart?Start
E5C04What are the two families of circles that make up a Smith chart?Start
E5C05What type of chart is shown in Figure E5-1?Start
E5C06On the Smith chart shown in Figure E5-1, what is the name for the large outer circle bounding the coordinate portion of the chart?Start
E5C07On the Smith chart shown in Figure E5-1, what is the only straight line shown?Start
E5C08What is the process of normalizing with regard to a Smith chart?Start
E5C09What is the third family of circles, which are added to a Smith chart during the process of solving problems?Start
E5C10In rectangular coordinates, what is the impedance of a network comprised of a 10-microhenry inductor in series with a 40-ohm resistor at 500 MHz?Start
E5C11In polar coordinates, what is the impedance of a network comprised of a 100- picofarad capacitor in parallel with a 4,000-ohm resistor at 500 kHz?Start
E5C13What are the curved lines on a Smith chart?Start
E5C14How are the wavelength scales on a Smith chart calibrated?Start
E5D01What is the phase angle between the voltage across and the current through a series R-L-C circuit if XC is 25 ohms, R is 100 ohms, and XL is 100 ohms?Start
E5D02What is the phase angle between the voltage across and the current through a series R-L-C circuit if XC is 500 ohms, R is 1 kilohm, and XL is 250 ohms?Start
E5D03What is the phase angle between the voltage across and the current through a series R-L-C circuit if XC is 50 ohms, R is 100 ohms, and XL is 25 ohms?Start
E5D04What is the phase angle between the voltage across and the current through a series R-L-C circuit if XC is 100 ohms, R is 100 ohms, and XL is 75 ohms?Start
E5D05What is the phase angle between the voltage across and the current through a series R-L-C circuit if XC is 50 ohms, R is 100 ohms, and XL is 75 ohms?Start
E5D06What is the relationship between the current through and the voltage across a capacitor?Start
E5D07What is the relationship between the current through an inductor and the voltage across an inductor?Start
E5D08What is the phase angle between the voltage across and the current through a series RLC circuit if XC is 25 ohms, R is 100 ohms, and XL is 50 ohms?Start
E5D09What is the phase angle between the voltage across and the current through a series RLC circuit if XC is 75 ohms, R is 100 ohms, and XL is 100 ohms?Start
E5D10What is the phase angle between the voltage across and the current through a series RLC circuit if XC is 75 ohms, R is 100 ohms, and XL is 50 ohms?Start
E5D11What is the phase angle between the voltage across and the current through a series RLC circuit if XC is 250 ohms, R is 1 kilohm, and XL is 500 ohms?Start
E5E01In polar coordinates, what is the impedance of a network comprised of a 100-ohm- reactance inductor in series with a 100-ohm resistor?Start
E5E02In polar coordinates, what is the impedance of a network comprised of a 100-ohm- reactance inductor, a 100-ohm-reactance capacitor, and a 100-ohm resistor all connected in series?Start
E5E03In polar coordinates, what is the impedance of a network comprised of a 300-ohm- reactance capacitor, a 600-ohm-reactance inductor, and a 400-ohm resistor, all connected in series?Start
E5E04In polar coordinates, what is the impedance of a network comprised of a 400-ohm- reactance capacitor in series with a 300-ohm resistor?Start
E5E05In polar coordinates, what is the impedance of a network comprised of a 400-ohm- reactance inductor in parallel with a 300-ohm resistor?Start
E5E06In polar coordinates, what is the impedance of a network comprised of a 100-ohm- reactance capacitor in series with a 100-ohm resistor?Start
E5E07In polar coordinates, what is the impedance of a network comprised of a 100-ohm- reactance capacitor in parallel with a 100-ohm resistor?Start
E5E08In polar coordinates, what is the impedance of a network comprised of a 300-ohm- reactance inductor in series with a 400-ohm resistor?Start
E5E09When using rectangular coordinates to graph the impedance of a circuit, what does the horizontal axis represent?Start
E5E10When using rectangular coordinates to graph the impedance of a circuit, what does the vertical axis represent?Start
E5E11What do the two numbers represent that are used to define a point on a graph using rectangular coordinates?Start
E5E12If you plot the impedance of a circuit using the rectangular coordinate system and find the impedance point falls on the right side of the graph on the horizontal line, what do you know about the circuit?Start
E5E13Why would you plot the impedance of a circuit using the polar coordinate system?Start
E5E14What coordinate system can be used to display the resistive, inductive, and/or capacitive reactance components of an impedance?Start
E5E15What coordinate system can be used to display the phase angle of a circuit containing resistance, inductive and/or capacitive reactance?Start
E5E16In polar coordinates, what is the impedance of a circuit of 100 -j100 ohms impedance?Start
E5E17In polar coordinates, what is the impedance of a circuit that has an admittance of 7.09 millisiemens at 45 degrees?Start
E5E18In rectangular coordinates, what is the impedance of a circuit that has an admittance of 5 millisiemens at -30 degrees?Start
E5E19In rectangular coordinates, what is the admittance of a circuit that has an impedance of 240 ohms at 36.9 degrees?Start
E5E20In polar coordinates, what is the impedance of a series circuit consisting of a resistance of 4 ohms, an inductive reactance of 4 ohms, and a capacitive reactance of 1 ohm?Start
E5E21Which point on Figure E5-2 best represents the impedance of a series circuit consisting of a 400 ohm resistor and a 38 picofarad capacitor at 14 MHz?Start
E5E22Which point in Figure E5-2 best represents the impedance of a series circuit consisting of a 300 ohm resistor and an 18 microhenry inductor at 3.505 MHz?Start
E5E23Which point on Figure E5-2 best represents the impedance of a series circuit consisting of a 300 ohm resistor and a 19 picofarad capacitor at 21.200 MHz?Start
E5F01What is the result of skin effect?Start
E5F02What effect causes most of an RF current to flow along the surface of a conductor?Start
E5F03Where does almost all RF current flow in a conductor?Start
E5F04Why does most of an RF current flow near the surface of a conductor?Start
E5F05Why is the resistance of a conductor different for RF currents than for direct currents?Start
E5F06What device is used to store electrical energy in an electrostatic field?Start
E5F07What unit measures electrical energy stored in an electrostatic field?Start
E5F08What is a magnetic field?Start
E5F09In what direction is the magnetic field oriented about a conductor in relation to the direction of electron flow?Start
E5F10What determines the strength of a magnetic field around a conductor?Start
E5F11What is the term for energy that is stored in an electromagnetic or electrostatic field?Start
E5G01What is the Q of a parallel R-L-C circuit if the resonant frequency is 14.128 MHz, L is 2.7 microhenrys and R is 18 kilohms?Start
E5G02What is the Q of a parallel R-L-C circuit if the resonant frequency is 4.468 MHz, L is 47 microhenrys and R is 180 ohms?Start
E5G03What is the Q of a parallel R-L-C circuit if the resonant frequency is 7.125 MHz, L is 8.2 microhenrys and R is 1 kilohm?Start
E5G04What is the Q of a parallel R-L-C circuit if the resonant frequency is 7.125 MHz, L is 12.6 microhenrys and R is 22 kilohms?Start
E5G05What is the Q of a parallel R-L-C circuit if the resonant frequency is 3.625 MHz, L is 42 microhenrys and R is 220 ohms?Start
E5G06Why is a resistor often included in a parallel resonant circuit?Start
E5G07What is the term for an out-of-phase, nonproductive power associated with inductors and capacitors?Start
E5G08In a circuit that has both inductors and capacitors, what happens to reactive power?Start
E5G09In a circuit where the AC voltage and current are out of phase, how can the true power be determined?Start
E5G10What is the power factor of an R-L circuit having a 60 degree phase angle between the voltage and the current?Start
E5G11How many watts are consumed in a circuit having a power factor of 0.2 if the input is 100-V AC at 4 amperes?Start
E5G12Why would the power used in a circuit be less than the product of the magnitudes of the AC voltage and current?Start
E5G13What is the Q of a parallel RLC circuit if the resonant frequency is 14.128 MHz, L is 4.7 microhenrys and R is 18 kilohms?Start
E5G14What is the Q of a parallel RLC circuit if the resonant frequency is 14.225 MHz, L is 3.5 microhenrys and R is 10 kilohms?Start
E5G15What is the Q of a parallel RLC circuit if the resonant frequency is 7.125 MHz, L is 10.1 microhenrys and R is 100 ohms?Start
E5G16What is the Q of a parallel RLC circuit if the resonant frequency is 3.625 MHz, L is 3 microhenrys and R is 2.2 kilohms?Start
E5H01What is the effective radiated power of a repeater station with 50 watts transmitter power output, 4-dB feed line loss, 2-dB duplexer loss, 1-dB circulator loss and 6-dBd antenna gain?Start
E5H02What is the effective radiated power of a repeater station with 50 watts transmitter power output, 5-dB feed line loss, 3-dB duplexer loss, 1-dB circulator loss and 7-dBd antenna gain?Start
E5H03What is the effective radiated power of a station with 75 watts transmitter power output, 4-dB feed line loss and 10-dBd antenna gain?Start
E5H04What is the effective radiated power of a repeater station with 75 watts transmitter power output, 5-dB feed line loss, 3-dB duplexer loss, 1-dB circulator loss and 6-dBd antenna gain?Start
E5H05What is the effective radiated power of a station with 100 watts transmitter power output, 1-dB feed line loss and 6-dBd antenna gain?Start
E5H06What is the effective radiated power of a repeater station with 100 watts transmitter power output, 5-dB feed line loss, 3-dB duplexer loss, 1-dB circulator loss and 10-dBd antenna gain?Start
E5H07What is the effective radiated power of a repeater station with 120 watts transmitter power output, 5-dB feed line loss, 3-dB duplexer loss, 1-dB circulator loss and 6-dBd antenna gain?Start
E5H08What is the effective radiated power of a repeater station with 150 watts transmitter power output, 2-dB feed line loss, 2.2-dB duplexer loss and 7-dBd antenna gain?Start
E5H09What is the effective radiated power of a repeater station with 200 watts transmitter power output, 4-dB feed line loss, 3.2-dB duplexer loss, 0.8-dB circulator loss and 10-dBd antenna gain?Start
E5H10What is the effective radiated power of a repeater station with 200 watts transmitter power output, 2-dB feed line loss, 2.8-dB duplexer loss, 1.2-dB circulator loss and 7-dBd antenna gain?Start
E5H11What term describes station output (including the transmitter, antenna and everything in between), when considering transmitter power and system gains and losses?Start
E5H12What is reactive power?Start
E5H13What is the power factor of an RL circuit having a 45 degree phase angle between the voltage and the current?Start
E5H14What is the power factor of an RL circuit having a 30 degree phase angle between the voltage and the current?Start
E5H15How many watts are consumed in a circuit having a power factor of 0.6 if the input is 200V AC at 5 amperes?Start
E5H16How many watts are consumed in a circuit having a power factor of 0.71 if the apparent power is 500 watts?Start
E5I01What is photoconductivity?Start
E5I02What happens to the conductivity of a photoconductive material when light shines on it?Start
E5I03What happens to the resistance of a photoconductive material when light shines on it?Start
E5I04What happens to the conductivity of a semiconductor junction when light shines on it?Start
E5I05What is an optocoupler?Start
E5I06What is an optoisolator?Start
E5I07What is an optical shaft encoder?Start
E5I08What characteristic of a crystalline solid will photoconductivity change?Start
E5I09Which material will exhibit the greatest photoconductive effect when visible light shines on it?Start
E5I10Which material will exhibit the greatest photoconductive effect when infrared light shines on it?Start
E5I11Which material is affected the most by photoconductivity?Start
E5I12What characteristic of optoisolators is often used in power supplies?Start
E5I13What characteristic of optoisolators makes them suitable for use with a triac to form the solid-state equivalent of a mechanical relay for a 120 V AC household circuit?Start
E6A01In what application is gallium arsenide used as a semiconductor material in preference to germanium or silicon?Start
E6A02What type of semiconductor material contains more free electrons than pure germanium or silicon crystals?Start
E6A03What are the majority charge carriers in P-type semiconductor material?Start
E6A04What is the name given to an impurity atom that adds holes to a semiconductor crystal structure?Start
E6A05What is the alpha of a bipolar transistor?Start
E6A06In Figure E6-1, what is the schematic symbol for a PNP transistor?Start
E6A07What term indicates the frequency at which a transistor grounded base current gain has decreased to 0.7 of the gain obtainable at 1 kHz?Start
E6A08What is a depletion-mode FET?Start
E6A09In Figure E6-2, what is the schematic symbol for an N-channel dual-gate MOSFET?Start
E6A10In Figure E6-2, what is the schematic symbol for a P-channel junction FET?Start
E6A11Why do many MOSFET devices have built-in gate-protective Zener diodes?Start
E6A12What do the initials CMOS stand for?Start
E6A13How does DC input impedance on the gate of a field-effect transistor compare with the DC input impedance of a bipolar transistor?Start
E6A14What two elements widely used in semiconductor devices exhibit both metallic and nonmetallic characteristics?Start
E6A15What type of semiconductor material contains fewer free electrons than pure germanium or silicon crystals?Start
E6A16What are the majority charge carriers in N-type semiconductor material?Start
E6A17What are the three terminals of a field-effect transistor?Start
E6B01What is the principal characteristic of a Zener diode?Start
E6B02What is the principal characteristic of a tunnel diode?Start
E6B03What special type of diode is capable of both amplification and oscillation?Start
E6B04What type of semiconductor diode varies its internal capacitance as the voltage applied to its terminals varies?Start
E6B05In Figure E6-3, what is the schematic symbol for a varactor diode?Start
E6B06What is a common use of a hot-carrier diode?Start
E6B07What limits the maximum forward current rating in a junction diode?Start
E6B08Structurally, what are the two main categories of semiconductor diodes?Start
E6B09What is a common use for point contact diodes?Start
E6B10In Figure E6-3, what is the schematic symbol for a light-emitting diode?Start
E6B11What voltage gain can be expected from the circuit in Figure E6-4 when R1 is 10 ohms and RF is 470 ohms?Start
E6B12How does the gain of a theoretically ideal operational amplifier vary with frequency?Start
E6B13What essentially determines the output impedance of a FET common-source amplifier?Start
E6B14What will be the voltage of the circuit shown in Figure E6-4 if R1 is 1000 ohms and RF is 10,000 ohms and 0.23 volts is applied to the input?Start
E6B15What voltage gain can be expected from the circuit in Figure E6-4 when R1 is 1800 ohms and RF is 68 kilohms?Start
E6B16What voltage gain can be expected from the circuit in Figure E6-4 when R1 is 3300 ohms and RF is 47 kilohms?Start
E6B18Which of the following circuits is used to recover audio from an FM voice signal?Start
E6B19What is the capture range of a phase-locked loop circuit?Start
E6B20How are junction diodes rated?Start
E6B21What is one common use for PIN diodes?Start
E6B22What type of bias is required for an LED to produce luminescence?Start
E6B23What is an operational amplifier?Start
E6B24What is meant by the term op-amp input-offset voltage?Start
E6B25What is the input impedance of a theoretically ideal op-amp?Start
E6B26What is the output impedance of a theoretically ideal op-amp?Start
E6B27What is a phase-locked loop circuit?Start
E6B28What functions are performed by a phase-locked loop?Start
E6C01What is the recommended power supply voltage for TTL series integrated circuits?Start
E6C02What logic state do the inputs of a TTL device assume if they are left open?Start
E6C03What level of input voltage is high in a TTL device operating with a 5-volt power supply?Start
E6C04What level of input voltage is low in a TTL device operating with a 5-volt power-supply?Start
E6C05What is NOT a major advantage of CMOS over other devices?Start
E6C06Why do CMOS digital integrated circuits have high immunity to noise on the input signal or power supply?Start
E6C07In Figure E6-5, what is the schematic symbol for an AND gate?Start
E6C08In Figure E6-5, what is the schematic symbol for a NAND gate?Start
E6C09In Figure E6-5, what is the schematic symbol for an OR gate?Start
E6C10In Figure E6-5, what is the schematic symbol for a NOR gate?Start
E6C11In Figure E6-5, what is the schematic symbol for the NOT operation (inverter)?Start
E6D01How is the electron beam deflected in a vidicon?Start
E6D02What is cathode ray tube (CRT) persistence?Start
E6D03If a cathode ray tube (CRT) is designed to operate with an anode voltage of 25,000 volts, what will happen if the anode voltage is increased to 35,000 volts?Start
E6D04Exceeding what design rating can cause a cathode ray tube (CRT) to generate X- rays?Start
E6D05Which of the following is true of a charge-coupled device (CCD)?Start
E6D06What function does a charge-coupled device (CCD) serve in a modern video camera?Start
E6D07What is a liquid-crystal display (LCD)?Start
E6D08What material property determines the inductance of a toroidal inductor with a 10-turn winding?Start
E6D09By careful selection of core material, over what frequency range can toroidal cores produce useful inductors?Start
E6D10What is one important reason for using powdered-iron toroids rather than ferrite toroids in an inductor?Start
E6D11What devices are commonly used as VHF and UHF parasitic suppressors at the input and output terminals of transistorized HF amplifiers?Start
E6D12What is a primary advantage of using a toroidal core instead of a solenoidal core in an inductor?Start
E6D13How many turns will be required to produce a 1-mH inductor using a ferrite toroidal core that has an inductance index (A L) value of 523 millihenrys/1000 turns?Start
E6D14How many turns will be required to produce a 5-microhenry inductor using a powdered-iron toroidal core that has an inductance index (A L) value of 40 microhenrys/100 turns?Start
E6D15What type of CRT deflection is better when high-frequency waves are to be displayed on the screen?Start
E6D16Which is NOT true of a charge-coupled device (CCD)?Start
E6D17What is the principle advantage of liquid-crystal display (LCD) devices?Start
E6D18What is one important reason for using ferrite toroids rather than powdered-iron toroids in an inductor?Start
E6E01For single-sideband phone emissions, what would be the bandwidth of a good crystal lattice band-pass filter?Start
E6E02For double-sideband phone emissions, what would be the bandwidth of a good crystal lattice band-pass filter?Start
E6E03What is a crystal lattice filter?Start
E6E04What technique is used to construct low-cost, high-performance crystal ladder filters?Start
E6E05Which of the following factors has the greatest effect in helping determine the bandwidth and response shape of a crystal ladder filter?Start
E6E06What is the piezoelectric effect?Start
E6E07What is the characteristic impedance of circuits in which MMICs are designed to work?Start
E6E08What is the typical noise figure of a monolithic microwave integrated circuit (MMIC) amplifier?Start
E6E09What type of amplifier device consists of a small pill sized package with an input lead, an output lead and 2 ground leads?Start
E6E10What typical construction technique do amateurs use when building an amplifier for the microwave bands containing a monolithic microwave integrated circuit (MMIC)?Start
E6E11How is the operating bias voltage supplied to a monolithic microwave integrated circuit (MMIC) that uses four leads?Start
E6E12How is the DC power from a voltage source fed to a monolithic microwave integrated circuits (MMIC)?Start
E6E13What supply voltage do monolithic microwave integrated circuits (MMIC) amplifiers typically require?Start
E6E14What is the most common package for inexpensive monolithic microwave integrated circuit (MMIC) amplifiers?Start
E7A01What is a bistable multivibrator circuit?Start
E7A02How many output level changes are obtained for every two trigger pulses applied to the input of a "T" flip-flop circuit?Start
E7A03The frequency of an AC signal can be divided electronically by what type of digital circuit?Start
E7A04How many flip-flops are required to divide a signal frequency by 4?Start
E7A05What is the characteristic function of an astable multivibrator?Start
E7A06What is the characteristic function of a monostable multivibrator?Start
E7A07What logical operation does an AND gate perform?Start
E7A08What logical operation does a NAND gate perform?Start
E7A09What logical operation does an OR gate perform?Start
E7A10What logical operation does a NOR gate perform?Start
E7A11What is a truth table?Start
E7A12In a positive-logic circuit, what level is used to represent a logic 1?Start
E7A13In a negative-logic circuit, what level is used to represent a logic 1?Start
E7B01For what portion of a signal cycle does a Class AB amplifier operate?Start
E7B02Which class of amplifier provides the highest efficiency?Start
E7B03Where on the load line should a bipolar-transistor, common-emitter Class A power amplifier be operated for best efficiency and stability?Start
E7B04How can parasitic oscillations be eliminated from a power amplifier?Start
E7B05How can even-order harmonics be reduced or prevented in transmitter amplifiers?Start
E7B06What can occur when a nonlinear amplifier is used with a single-sideband phone transmitter?Start
E7B07How can a vacuum-tube power amplifier be neutralized?Start
E7B08What is the procedure for tuning a vacuum-tube power amplifier having an output pi-network?Start
E7B09In Figure E7-1, what is the purpose of R1 and R2?Start
E7B10In Figure E7-1, what is the purpose of C3?Start
E7B11In Figure E7-1, what is the purpose of R3?Start
E7B12What type of circuit is shown in Figure E7-1?Start
E7B13In Figure E7-1, what is the purpose of C1?Start
E7B14In Figure E7-2, what is the purpose of R?Start
E7B15In Figure E7-2, what is the purpose of C2?Start
E7B16What is the purpose of D1 in the circuit shown in Figure E7-3?Start
E7B17What is the purpose of Q1 in the circuit shown in Figure E7-3?Start
E7B18What is the purpose of C2 in the circuit shown in Figure E7-3?Start
E7B19What type of circuit is shown in Figure E7-3?Start
E7B20What is the purpose of C1 in the circuit shown in Figure E7-3?Start
E7B21What is the purpose of C3 in the circuit shown in Figure E7-3?Start
E7B22What is the purpose of R1 in the circuit shown in Figure E7-3?Start
E7B23What is the purpose of R2 in the circuit shown in Figure E7-3?Start
E7C01How are the capacitors and inductors of a low-pass filter pi-network arranged between the network's input and output?Start
E7C02What is an L-network?Start
E7C03A T-network with series capacitors and a parallel (shunt) inductor has which of the following properties?Start
E7C04What advantage does a pi-L-network have over a pi-network for impedance matching between the final amplifier of a vacuum-tube type transmitter and a multiband antenna?Start
E7C05How does a network transform one impedance to another?Start
E7C06Which filter type is described as having ripple in the passband and a sharp cutoff?Start
E7C07What are the distinguishing features of an elliptical filter?Start
E7C08What kind of audio filter would you use to attenuate an interfering carrier signal while receiving an SSB transmission?Start
E7C09What characteristic do typical SSB receiver IF filters lack that is important to digital communications?Start
E7C10What kind of digital signal processing audio filter might be used to remove unwanted noise from a received SSB signal?Start
E7C11What kind of digital signal processing filter might be used in generating an SSB signal?Start
E7C12Which type of filter would be the best to use in a 2-meter repeater duplexer?Start
E7C13What is a pi-network?Start
E7C14What is a pi-L-network?Start
E7C15Which type of network provides the greatest harmonic suppression?Start
E7D01What are three major oscillator circuits often used in Amateur Radio equipment?Start
E7D02What condition must exist for a circuit to oscillate?Start
E7D03How is the positive feedback coupled to the input in a Hartley oscillator?Start
E7D04How is the positive feedback coupled to the input in a Colpitts oscillator?Start
E7D05How is the positive feedback coupled to the input in a Pierce oscillator?Start
E7D06Which type of oscillator circuits are commonly used in a VFO?Start
E7D07Why is very stable reference oscillator normally used as part of a phase-locked loop (PLL) frequency synthesizer?Start
E7D08What is one characteristic of a linear electronic voltage regulator?Start
E7D09What is one characteristic of a switching electronic voltage regulator?Start
E7D10What device is typically used as a stable reference voltage in a linear voltage regulator?Start
E7D11What type of linear regulator is used in applications requiring efficient use of the primary power source?Start
E7D12What type of linear voltage regulator is used in applications requiring a constant load on the unregulated voltage source?Start
E7D13Which of the following Zener diodes voltages will result in the best temperature stability for a voltage reference?Start
E7D14What are the important characteristics of a three-terminal regulator?Start
E7D15What type of voltage regulator limits the voltage drop across its junction when a specified current passes through it in the reverse-breakdown direction?Start
E7E01How is an F3E FM-phone emission produced?Start
E7E02How does a reactance modulator work?Start
E7E03How does a phase modulator work?Start
E7E04How can a single-sideband phone signal be generated?Start
E7E05What audio shaping network is added at a transmitter to proportionally attenuate the lower audio frequencies, giving an even spread to the energy in the audio band?Start
E7E06What audio shaping network is added at a receiver to restore proportionally attenuated lower audio frequencies?Start
E7E07What is the mixing process?Start
E7E08What are the principal frequencies that appear at the output of a mixer circuit?Start
E7E09What occurs in a receiver when an excessive amount of signal energy reaches the mixer circuit?Start
E7E10What type of frequency synthesizer circuit uses a stable voltage-controlled oscillator, programmable divider, phase detector, loop filter and a reference frequency source?Start
E7E11What type of frequency synthesizer circuit uses a phase accumulator, lookup table, digital to analog converter and a low-pass antialias filter?Start
E7E12What are the main blocks of a direct digital frequency synthesizer?Start
E7E13What information is contained in the lookup table of a direct digital frequency synthesizer?Start
E7E14What are the major spectral impurity components of direct digital synthesizers?Start
E7E15What are the major spectral impurity components of phase-locked loop synthesizers?Start
E7E16What is the process of detection?Start
E7E17What is the principle of detection in a diode detector?Start
E7E18What does a product detector do?Start
E7E19How are FM-phone signals detected?Start
E7E20What is a frequency discriminator?Start
E7E21How can an FM-phone signal be produced?Start
E7F01What is the purpose of a prescaler circuit?Start
E7F02How many states does a decade counter digital IC have?Start
E7F03What is the function of a decade counter digital IC?Start
E7F04What additional circuitry is required in a 100-kHz crystal-controlled marker generator to provide markers at 50 and 25 kHz?Start
E7F05If a 1-MHz oscillator is used with a divide-by-ten circuit to make a marker generator, what will the output be?Start
E7F06What is a crystal-controlled marker generator?Start
E7F07What type of circuit does NOT make a good marker generator?Start
E7F08What is the purpose of a marker generator?Start
E7F09What does the accuracy of a frequency counter depend on?Start
E7F10How does a frequency counter determine the frequency of a signal?Start
E7F11What is the purpose of a frequency counter?Start
E7G01What determines the gain and frequency characteristics of an op-amp RC active filter?Start
E7G02What causes ringing in a filter?Start
E7G03What are the advantages of using an op-amp instead of LC elements in an audio filter?Start
E7G04What type of capacitors should be used in a high-stability op-amp RC active filter circuit?Start
E7G05How can unwanted ringing and audio instability be prevented in a multisection op-amp RC audio filter circuit?Start
E7G06What parameter must be selected when selecting the resistor and capacitor values for an RC active filter using an op-amp?Start
E7G07The design of a preselector involves a trade-off between bandwidth and what other factor?Start
E7G08When designing an op-amp RC active filter for a given frequency range and Q, what steps are typically followed when selecting the external components?Start
E7G09When designing an op-amp RC active filter for a given frequency range and Q, why are the external capacitance values usually chosen first, then the external resistance values calculated?Start
E7G10What are the principal uses of an op-amp RC active filter in amateur circuitry?Start
E7G11Where should an op-amp RC active audio filter be placed in an amateur receiver?Start
E8A01Starting at a positive peak, how many times does a sine wave cross the zero axis in one complete cycle?Start
E8A02What is a wave called that abruptly changes back and forth between two voltage levels and remains an equal time at each level?Start
E8A03What sine waves added to a fundamental frequency make up a square wave?Start
E8A04What type of wave is made up of a sine wave of a fundamental frequency and all its odd harmonics?Start
E8A05What is a sawtooth wave?Start
E8A06What type of wave has a rise time significantly faster than the fall time (or vice versa)?Start
E8A07What type of wave is made up of sine waves of a fundamental frequency and all harmonics?Start
E8A08What is the peak voltage at a common household electrical outlet?Start
E8A09What is the peak-to-peak voltage at a common household electrical outlet?Start
E8A10What is the RMS voltage at a common household electrical power outlet?Start
E8A11What is the RMS value of a 340-volt peak-to-peak pure sine wave?Start
E8A12What is the equivalent to the root-mean-square value of an AC voltage?Start
E8A13What would be the most accurate way of measuring the RMS voltage of a complex waveform?Start
E8A14For many types of voices, what is the approximate ratio of PEP to average power during a modulation peak in a single-sideband phone signal?Start
E8A15In a single-sideband phone signal, what determines the PEP-to-average power ratio?Start
E8A16What is the approximate DC input power to a Class B RF power amplifier stage in an FM-phone transmitter when the PEP output power is 1500 watts?Start
E8A17What is the approximate DC input power to a Class AB RF power amplifier stage in an unmodulated carrier transmitter when the PEP output power is 500 watts?Start
E8A18What is the period of a wave?Start
E8B01What is emission A3C?Start
E8B02What type of emission is produced when an AM transmitter is modulated by a facsimile signal?Start
E8B03What does a facsimile transmission produce?Start
E8B04What is emission F3F?Start
E8B05What type of emission is produced when an SSB transmitter is modulated by a slow-scan television signal?Start
E8B06If the first symbol of an ITU emission designator is J, representing a single- sideband, suppressed-carrier signal, what information about the emission is described?Start
E8B07If the second symbol of an ITU emission designator is 1, representing a single channel containing quantized, or digital information, what information about the emission is described?Start
E8B08If the third symbol of an ITU emission designator is D, representing data transmission, telemetry or telecommand, what information about the emission is described?Start
E8B10How does the modulation index of a phase-modulated emission vary with RF carrier frequency (the modulated frequency)?Start
E8B11In an FM-phone signal having a maximum frequency deviation of 3000 Hz either side of the carrier frequency, what is the modulation index when the modulating frequency is 1000 Hz?Start
E8B12What is the modulation index of an FM-phone transmitter producing a maximum carrier deviation of 6 kHz when modulated with a 2-kHz modulating frequency?Start
E8B13What is the deviation ratio of an FM-phone signal having a maximum frequency swing of plus or minus 5 kHz and accepting a maximum modulation rate of 3 kHz?Start
E8B14In a pulse width-modulation system, why is the transmitter's peak power much greater than its average power?Start
E8B15What is one way that voice is transmitted in a pulse-width modulation system?Start
E8B17Which of the following describe the three most-used symbols of an ITU emission designator?Start
E8B18If the first symbol of an ITU emission designator is G, representing a phase- modulated signal, what information about the emission is described?Start
E8B19In a pulse-position modulation system, what parameter does the modulating signal vary?Start
E8B20In a pulse-width modulation system, what parameter does the modulating signal vary?Start
E8B21How are the pulses of a pulse-modulated signal usually transmitted?Start
E8B22In an FM-phone signal, what is the term for the ratio between the deviation of the frequency modulated signal and the modulating frequency?Start
E8B23What is meant by deviation ratio?Start
E8B24What is the deviation ratio of an FM-phone signal having a maximum frequency swing of plus or minus 7.5 kHz and accepting a maximum modulation rate of 3.5 kHz?Start
E8C01What digital code consists of elements having unequal length?Start
E8C02What are some of the differences between the Baudot digital code and ASCII?Start
E8C03What is one advantage of using the ASCII code for data communications?Start
E8C04What digital communications system is well suited for meteor-scatter Communications at times other than during meteor showers?Start
E8C05What type of error control system does Mode A AMTOR use?Start
E8C06What type of error control system does Mode B AMTOR use?Start
E8C07What is the necessary bandwidth of a 13-WPM international Morse code emission A1A transmission?Start
E8C08What is the necessary bandwidth for a 170-hertz shift, 300-baud ASCII emission J2D transmission?Start
E8C09What is the necessary bandwidth of a 1000-Hz shift, 1200-baud ASCII emission F1D transmission?Start
E8C10What is the necessary bandwidth of a 4800-Hz frequency shift, 9600-baud ASCII emission F1D transmission?Start
E8C11What term describes a wide-bandwidth communications system in which the RF carrier varies according to some predetermined sequence?Start
E8C12What spread-spectrum communications technique alters the center frequency of a conventional carrier many times per second in accordance with a pseudo-random list of channels?Start
E8C13What spread-spectrum communications technique uses a very fast binary bit stream to shift the phase of an RF carrier?Start
E8C14What controls the spreading sequence of an amateur spread-spectrum transmission?Start
E8C15What makes spread-spectrum communications resistant to interference?Start
E8C16What reduces interference from spread-spectrum transmitters to conventional communications in the same band?Start
E8D01What is the term for the amplitude of the maximum positive excursion of a signal as viewed on an oscilloscope?Start
E8D02What is the easiest voltage amplitude dimension to measure by viewing a pure sine wave signal on an oscilloscope?Start
E8D03What is the relationship between the peak-to-peak voltage and the peak voltage amplitude in a symmetrical waveform?Start
E8D04What input-amplitude parameter is valuable in evaluating the signal-handling capability of a Class A amplifier?Start
E8D05What is the PEP output of a transmitter that has a maximum peak of 30 volts to a 50-ohm load as observed on an oscilloscope?Start
E8D06If an RMS reading AC voltmeter reads 65 volts on a sinusoidal waveform, what is the peak-to-peak voltage?Start
E8D07What is the advantage of using a peak-reading voltmeter to monitor the output of a single-sideband transmitter?Start
E8D08What is an electromagnetic wave?Start
E8D09Which of the following best describes electromagnetic waves traveling in free space?Start
E8D10What is meant by circularly polarized electromagnetic waves?Start
E8D11What is the polarization of an electromagnetic wave if its magnetic field is parallel to the surface of the Earth?Start
E8D12What is the polarization of an electromagnetic wave if its magnetic field is perpendicular to the surface of the Earth?Start
E8D13What is the primary source of noise that can be heard in an HF-band receiver with an antenna connected?Start
E8D14At approximately what speed do electromagnetic waves travel in free space?Start
E8D15To ensure you do not exceed the maximum allowable power, what kind of meter would you use to monitor the output signal of a properly adjusted single- sideband transmitter?Start
E8D16What is the average power dissipated by a 50-ohm resistive load during one complete RF cycle having a peak voltage of 35 volts?Start
E8D17If an RMS reading voltmeter reads 34 volts on a sinusoidal waveform, what is the peak voltage?Start
E9A01Which of the following describes an isotropic radiator?Start
E9A02When is it useful to refer to an isotropic radiator?Start
E9A03How much gain does a 1/2-wavelength dipole have over an isotropic radiator?Start
E9A04Which of the following antennas has no gain in any direction?Start
E9A05Which of the following describes the radiation pattern of an isotropic radiator?Start
E9A06Why would one need to know the feed point impedance of an antenna?Start
E9A07What factors determine the radiation resistance of an antenna?Start
E9A08What is the term for the ratio of the radiation resistance of an antenna to the total resistance of the system?Start
E9A09What is included in the total resistance of an antenna system?Start
E9A10What is a folded dipole antenna?Start
E9A11What is meant by antenna gain?Start
E9A12What is meant by antenna bandwidth?Start
E9A13How can the approximate beamwidth of a beam antenna be determined?Start
E9A14How is antenna efficiency calculated?Start
E9A15How can the efficiency of an HF grounded vertical antenna be made comparable to that of a half-wave dipole antenna?Start
E9A16What theoretical reference antenna provides a comparison for antenna measurements?Start
E9A17How much gain does an antenna have over a 1/2-wavelength dipole when it has 6 dB gain over an isotropic radiator?Start
E9A18How much gain does an antenna have over a 1/2-wavelength dipole when it has 12 dB gain over an isotropic radiator?Start
E9A19Which of the following describes the directivity of an isotropic radiator?Start
E9A20What is meant by the radiation resistance of an antenna?Start
E9B01What determines the free-space polarization of an antenna?Start
E9B02In the free-space H-Field radiation pattern shown in Figure E9-1, what is the 3- dB beamwidth?Start
E9B03In the free-space H-Field pattern shown in Figure E9-1, what is the front-to- back ratio?Start
E9B04In the free-space H-field pattern shown in Figure E9-1, what is the front-to- side ratio?Start
E9B05What information is needed to accurately evaluate the gain of an antenna?Start
E9B06Which is NOT an important reason to evaluate a gain antenna across the whole frequency band for which it was designed?Start
E9B07What usually occurs if a Yagi antenna is designed solely for maximum forward gain?Start
E9B08If the boom of a Yagi antenna is lengthened and the elements are properly retuned, what usually occurs?Start
E9B09What type of computer program is commonly used for modeling antennas?Start
E9B10What is the principle of a Method of Moments analysis?Start
E9C01What is the radiation pattern of two 1/4-wavelength vertical antennas spaced 1/2-wavelength apart and fed 180 degrees out of phase?Start
E9C02What is the radiation pattern of two 1/4-wavelength vertical antennas spaced 1/4-wavelength apart and fed 90 degrees out of phase?Start
E9C03What is the radiation pattern of two 1/4-wavelength vertical antennas spaced 1/2-wavelength apart and fed in phase?Start
E9C04What is the radiation pattern of two 1/4-wavelength vertical antennas spaced 1/4-wavelength apart and fed 180 degrees out of phase?Start
E9C05What is the radiation pattern for two 1/4-wavelength vertical antennas spaced 1/8-wavelength apart and fed 180 degrees out of phase?Start
E9C06What is the radiation pattern for two 1/4-wavelength vertical antennas spaced 1/4-wavelength apart and fed in phase?Start
E9C07Which of the following is the best description of a resonant rhombic antenna?Start
E9C08What are the advantages of a terminated rhombic antenna?Start
E9C09What are the disadvantages of a terminated rhombic antenna for the HF bands?Start
E9C10What is the effect of a terminating resistor on a rhombic antenna?Start
E9C11What type of antenna pattern over real ground is shown in Figure E9-2?Start
E9C12In the H field antenna radiation pattern shown in Figure E9-2, what is the elevation angle of the peak response?Start
E9C13In the H field antenna radiation pattern shown in Figure E9-2, what is the front-to-back ratio?Start
E9C14In the H field antenna radiation pattern shown in Figure E9-2, how many elevation lobes appear in the forward direction?Start
E9C15How is the far-field elevation pattern of a vertically polarized antenna affected by being mounted over seawater versus rocky ground?Start
E9C16If only a modest on-ground radial system can be used with an eighth-wavelength- high, inductively loaded vertical antenna, what would be the best compromise to minimize near-field losses?Start
E9C17What is one characteristic of a Beverage antenna?Start
E9C18How would the electric field be oriented for a Yagi with three elements mounted parallel to the ground?Start
E9C19What strongly affects the shape of the far-field, low-angle elevation pattern of a vertically polarized antenna?Start
E9C20Why are elevated-radial counterpoises popular with vertically polarized antennas?Start
E9C21What is a terminated rhombic antenna?Start
E9D01What factors determine the receiving antenna gain required at an amateur satellite station in earth operation?Start
E9D02What factors determine the EIRP required by an amateur satellite station in earth operation?Start
E9D03What is the approximate beamwidth of a symmetrical pattern antenna with a gain of 20 dB as compared to an isotropic radiator?Start
E9D04How does the gain of a parabolic dish antenna change when the operating frequency is doubled?Start
E9D05How is circular polarization produced using linearly polarized antennas?Start
E9D06How does the beamwidth of an antenna vary as the gain is increased?Start
E9D07Why does a satellite communications antenna system for earth operation need to have rotators for both azimuth and elevation control?Start
E9D08For a shortened vertical antenna, where should a loading coil be placed to minimize losses and produce the most effective performance?Start
E9D09Why should an HF mobile antenna loading coil have a high ratio of reactance to resistance?Start
E9D10What is a disadvantage of using a trap antenna?Start
E9D11How must the driven element in a 3-element Yagi be tuned to use a hairpin matching system?Start
E9D12What is the equivalent lumped-constant network for a hairpin matching system on a 3-element Yagi?Start
E9D13What happens to the bandwidth of an antenna as it is shortened through the use of loading coils?Start
E9D14What is an advantage of using top loading in a shortened HF vertical antenna?Start
E9D15What is the approximate input terminal impedance at the center of a folded dipole antenna?Start
E9D16Why is a loading coil often used with an HF mobile antenna?Start
E9D17What is an advantage of using a trap antenna?Start
E9D18What happens at the base feed-point of a fixed length HF mobile antenna as the frequency of operation is lowered?Start
E9D19What is the beamwidth of a symmetrical pattern antenna with a gain of 30 dB as compared to an isotropic radiator?Start
E9D20What is the beamwidth of a symmetrical pattern antenna with a gain of 15 dB as compared to an isotropic radiator?Start
E9D21What is the beamwidth of a symmetrical pattern antenna with a gain of 12 dB as compared to an isotropic radiator?Start
E9E01What system matches a high-impedance transmission line to a lower impedance antenna by connecting the line to the driven element in two places, spaced a fraction of a wavelength each side of element center?Start
E9E02What system matches an unbalanced feed line to an antenna by feeding the driven element both at the center of the element and at a fraction of a wavelength to one side of center?Start
E9E03What impedance matching system uses a short perpendicular section of transmission line connected to the feed line near the antenna?Start
E9E04What should be the approximate capacitance of the resonating capacitor in a gamma matching circuit on a Yagi beam antenna for the 20-meter band?Start
E9E05What should be the approximate capacitance of the resonating capacitor in a gamma matching circuit on a Yagi beam antenna for the 10-meter band?Start
E9E06What is the velocity factor of a transmission line?Start
E9E07What determines the velocity factor in a transmission line?Start
E9E08Why is the physical length of a coaxial cable transmission line shorter than its electrical length?Start
E9E09What is the typical velocity factor for a coaxial cable with polyethylene dielectric?Start
E9E10What would be the physical length of a typical coaxial transmission line that is electrically one-quarter wavelength long at 14.1 MHz? (Assume a velocity factor of 0.66.)Start
E9E11What is the physical length of a parallel conductor feed line that is electrically one-half wavelength long at 14.10 MHz? (Assume a velocity factor of 0.95.)Start
E9E12What parameter best describes the interactions at the load end of a mismatched transmission line?Start
E9E13Which of the following measurements describes a mismatched transmission line?Start
E9E14What characteristic will 450-ohm ladder line have at 50 MHz, as compared to 0.195-inch-diameter coaxial cable (such as RG-58)?Start
E9E15What is the term for the ratio of the actual velocity at which a signal travels through a transmission line to the speed of light in a vacuum?Start
E9E16What would be the physical length of a typical coaxial transmission line that is electrically one-quarter wavelength long at 7.2 MHz? (Assume a velocity factor of 0.66.)Start
E9E17What kind of impedance does a 1/8-wavelength transmission line present to a generator when the line is shorted at the far end?Start
E9E18What kind of impedance does a 1/8-wavelength transmission line present to a generator when the line is open at the far end?Start
E9E19What kind of impedance does a 1/4-wavelength transmission line present to a generator when the line is open at the far end?Start
E9E20What kind of impedance does a 1/4-wavelength transmission line present to a generator when the line is shorted at the far end?Start
E9E21What kind of impedance does a 1/2-wavelength transmission line present to a generator when the line is shorted at the far end?Start
E9E22What kind of impedance does a 1/2-wavelength transmission line present to a generator when the line is open at the far end?Start