Input: [Name] E2D03 [Study] Start [Question]

Output: In comparing HF and 2-meter packet Operations, which of the following is NOT true?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E2D04 [Study] Start [Question]

Output: What is the purpose of a digital store and forward on an Amateur satellite?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E2D05 [Study] Start [Question]

Output: Which of the following techniques is normally used by low-earth orbiting digital satellites to relay messages around the world?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E2D06 [Study] Start [Question]

Output: What is the common 2-meter APRS frequency?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E2D07 [Study] Start [Question]

Output: Which of the following digital protocols does APRS use?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E2D08 [Study] Start [Question]

Output: Which of the following types of packet frames is used to transmit APRS beacon data?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E2D09 [Study] Start [Question]

Output: Under clear communications conditions, which of these digital communications modes has the fastest data throughput?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E2D10 [Study] Start [Question]

Output: How can an APRS station be used to help support a public service communications activity, such as a walk-a-thon?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E2D11 [Study] Start [Question]

Output: Which of the following data sources are needed to accurately transmit your geographical location over the APRS network?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E2E01 [Study] Start [Question]

Output: What is the most common method of transmitting data emissions below 30 MHz?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E2E02 [Study] Start [Question]

Output: What do the letters FEC mean as they relate to AMTOR operation?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E2E03 [Study] Start [Question]

Output: How is Forward Error Correction implemented?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E2E04 [Study] Start [Question]

Output: If 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?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E2E05 [Study] Start [Question]

Output: What 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?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E2E06 [Study] Start [Question]

Output: What is the most common data rate used for HF packet communications?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E2E07 [Study] Start [Question]

Output: What is the typical bandwidth of a properly modulated MFSK16 signal?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E2E08 [Study] Start [Question]

Output: Which of the following HF digital modes can be used to transfer binary files?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E2E11 [Study] Start [Question]

Output: What is the Baudot code?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E2E12 [Study] Start [Question]

Output: Which of these digital communications modes has the narrowest bandwidth?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E3A01 [Study] Start [Question]

Output: What is the maximum separation between two stations communicating by moonbounce?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E3A02 [Study] Start [Question]

Output: What characterizes libration fading of an earth-moon-earth signal?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E3A03 [Study] Start [Question]

Output: When scheduling EME contacts, which of these conditions will generally result in the least path loss?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E3A04 [Study] Start [Question]

Output: What type of receiving system is desirable for EME communications?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E3A05 [Study] Start [Question]

Output: What transmit and receive time sequencing is normally used on 144 MHz when attempting an earth-moon-earth contact?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E3A06 [Study] Start [Question]

Output: What transmit and receive time sequencing is normally used on 432 MHz when attempting an EME contact?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E3A07 [Study] Start [Question]

Output: What frequency range would you normally tune to find EME stations in the 2-meter band?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E3A08 [Study] Start [Question]

Output: What frequency range would you normally tune to find EME stations in the 70-cm band?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E3A09 [Study] Start [Question]

Output: When a meteor strikes the earth's atmosphere, a cylindrical region of free electrons is formed at what layer of the ionosphere?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E3A10 [Study] Start [Question]

Output: Which range of frequencies is well suited for meteor-scatter communications?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E3A11 [Study] Start [Question]

Output: What transmit and receive time sequencing is normally used on 144 MHz when attempting a meteor-scatter contact?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E3B01 [Study] Start [Question]

Output: What is transequatorial propagation?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E3B02 [Study] Start [Question]

Output: What is the approximate maximum range for signals using transequatorial propagation?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E3B03 [Study] Start [Question]

Output: What is the best time of day for transequatorial propagation?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E3B04 [Study] Start [Question]

Output: What 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?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E3B05 [Study] Start [Question]

Output: On what amateur bands can long-path propagation provide signal enhancement?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E3B06 [Study] Start [Question]

Output: What amateur band consistently yields long-path enhancement using a modest antenna of relatively high gain?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E3B07 [Study] Start [Question]

Output: What 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?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E3B08 [Study] Start [Question]

Output: What type of propagation is probably occurring if radio signals travel along the terminator between daylight and darkness?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E3B09 [Study] Start [Question]

Output: At what time of day is gray-line propagation most prevalent?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E3B10 [Study] Start [Question]

Output: What is the cause of gray-line propagation?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E3B11 [Study] Start [Question]

Output: What communications are possible during gray-line propagation?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E3C01 [Study] Start [Question]

Output: What effect does auroral activity have upon radio communications?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E3C02 [Study] Start [Question]

Output: What is the cause of auroral activity?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E3C03 [Study] Start [Question]

Output: Where in the ionosphere does auroral activity occur?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E3C04 [Study] Start [Question]

Output: Which emission mode is best for auroral propagation?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E3C05 [Study] Start [Question]

Output: What causes selective fading?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E3C06 [Study] Start [Question]

Output: How does the bandwidth of a transmitted signal affect selective fading?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E3C07 [Study] Start [Question]

Output: How much farther does the VHF/UHF radio-path horizon distance exceed the geometric horizon?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E3C08 [Study] Start [Question]

Output: For a 3-element beam antenna with horizontally mounted elements, how does the main lobe takeoff angle vary with height above flat ground?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E3C09 [Study] Start [Question]

Output: What is the name of the high-angle wave in HF propagation that travels for some distance within the F2 region?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E3C10 [Study] Start [Question]

Output: What effect is usually responsible for propagating a VHF signal over 500 miles?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E3C11 [Study] Start [Question]

Output: For 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)?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E3C12 [Study] Start [Question]

Output: In the northern hemisphere, in which direction should a directional antenna be pointed to take maximum advantage of auroral propagation?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E3C13 [Study] Start [Question]

Output: As the frequency of a signal is increased, how does its ground wave propagation change?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E3C14 [Study] Start [Question]

Output: What typical polarization does ground-wave propagation have?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E3C15 [Study] Start [Question]

Output: Why does the radio-path horizon distance exceed the geometric horizon?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E4A01 [Study] Start [Question]

Output: How does a spectrum analyzer differ from a conventional time-domain oscilloscope?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E4A02 [Study] Start [Question]

Output: What parameter does the horizontal axis of a spectrum analyzer display?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E4A03 [Study] Start [Question]

Output: What parameter does the vertical axis of a spectrum analyzer display?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E4A04 [Study] Start [Question]

Output: Which test instrument is used to display spurious signals from a radio transmitter?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E4A05 [Study] Start [Question]

Output: Which test instrument is used to display intermodulation distortion products in an SSB transmission?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E4A06 [Study] Start [Question]

Output: Which of the following is NOT something that could be determined with a spectrum analyzer?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E4A07 [Study] Start [Question]

Output: What is an advantage of using a spectrum analyzer to observe the output from a VHF transmitter?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E4A08 [Study] Start [Question]

Output: What advantage does a logic probe have over a voltmeter for monitoring the status of a logic circuit?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E4A09 [Study] Start [Question]

Output: Which test instrument is used to directly indicate high and low digital voltage states?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E4A10 [Study] Start [Question]

Output: What can a logic probe indicate about a digital logic circuit?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E4A11 [Study] Start [Question]

Output: Which of the following test instruments can be used to indicate pulse conditions in a digital logic circuit?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E4A12 [Study] Start [Question]

Output: Which of the following procedures should you follow when connecting a spectrum analyzer to a transmitter output?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E4B01 [Study] Start [Question]

Output: What is a frequency standard?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E4B02 [Study] Start [Question]

Output: What factors limit the accuracy, frequency response and stability of a frequency counter?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E4B03 [Study] Start [Question]

Output: How can the accuracy of a frequency counter be improved?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E4B04 [Study] Start [Question]

Output: If 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?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E4B05 [Study] Start [Question]

Output: If 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?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E4B06 [Study] Start [Question]

Output: If 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?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E4B07 [Study] Start [Question]

Output: If 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?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E4B08 [Study] Start [Question]

Output: If 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?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E4B09 [Study] Start [Question]

Output: If 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?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E4B10 [Study] Start [Question]

Output: If 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?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E4B11 [Study] Start [Question]

Output: What is a dip-meter?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E4B12 [Study] Start [Question]

Output: What does a dip-meter do?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E4B13 [Study] Start [Question]

Output: How does a dip-meter function?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E4B14 [Study] Start [Question]

Output: What two ways could a dip-meter be used in an amateur station?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E4B15 [Study] Start [Question]

Output: For best accuracy, how tightly should a dip-meter be coupled with the LC circuit being checked?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E4B16 [Study] Start [Question]

Output: What factors limit the accuracy, frequency response and stability of an oscilloscope?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E4B17 [Study] Start [Question]

Output: What happens in a dip-meter when it is too tightly coupled with a tuned circuit being checked?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E4B18 [Study] Start [Question]

Output: What factors limit the accuracy, frequency response and stability of a D'Arsonval-type meter?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E4B19 [Study] Start [Question]

Output: How can the frequency response of an oscilloscope be improved?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E4C01 [Study] Start [Question]

Output: What is the effect of excessive phase noise in the local oscillator section of a receiver?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E4C02 [Study] Start [Question]

Output: What is the term for the reduction in receiver sensitivity caused by a strong signal near the received frequency?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E4C03 [Study] Start [Question]

Output: Which of the following can cause receiver desensitization?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E4C04 [Study] Start [Question]

Output: Which of the following is one way receiver desensitization can be reduced?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E4C05 [Study] Start [Question]

Output: What is the FM capture effect?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E4C06 [Study] Start [Question]

Output: What is the term for the blocking of one FM phone signal by another, stronger FM phone signal?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E4C07 [Study] Start [Question]

Output: What is meant by the noise floor of a receiver?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E4C08 [Study] Start [Question]

Output: What 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?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E4C09 [Study] Start [Question]

Output: What is meant by the dynamic range of a communications receiver?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E4C10 [Study] Start [Question]

Output: What type of problems are caused by poor dynamic range in a communications receiver?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E4C11 [Study] Start [Question]

Output: If you measured the MDS of a receiver, what would you be measuring?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E4C12 [Study] Start [Question]

Output: How does intermodulation interference between two repeater transmitters usually occur?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E4C13 [Study] Start [Question]

Output: How can intermodulation interference between two repeater transmitters in close proximity often be reduced or eliminated?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E4C14 [Study] Start [Question]

Output: If 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?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E4C15 [Study] Start [Question]

Output: If 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?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E4C16 [Study] Start [Question]

Output: What is cross-modulation interference?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E4C17 [Study] Start [Question]

Output: What causes intermodulation in an electronic circuit?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E4C18 [Study] Start [Question]

Output: What two factors determine the sensitivity of a receiver?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E4C19 [Study] Start [Question]

Output: What is the limiting condition for sensitivity in a communications receiver?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E4C20 [Study] Start [Question]

Output: Selectivity can be achieved in the front-end circuitry of a communications receiver by using what means?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E4C21 [Study] Start [Question]

Output: What degree of selectivity is desirable in the IF circuitry of an amateur RTTY receiver?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E4C22 [Study] Start [Question]

Output: What degree of selectivity is desirable in the IF circuitry of a single-sideband phone receiver?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E4C23 [Study] Start [Question]

Output: What is an undesirable effect of using too wide a filter bandwidth in the IF section of a receiver?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E4C24 [Study] Start [Question]

Output: How should the filter bandwidth of a receiver IF section compare with the bandwidth of a received signal?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E4C25 [Study] Start [Question]

Output: What degree of selectivity is desirable in the IF section of an FM phone receiver?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E4C27 [Study] Start [Question]

Output: In 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?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E4D01 [Study] Start [Question]

Output: What is one of the most significant problems associated with reception in HF transceivers?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E4D02 [Study] Start [Question]

Output: What is the proper procedure for suppressing electrical noise in a mobile transceiver?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E4D03 [Study] Start [Question]

Output: Where should ferrite beads be installed to suppress ignition noise in a mobile transceiver?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E4D04 [Study] Start [Question]

Output: How can alternator whine be minimized?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E4D05 [Study] Start [Question]

Output: How can conducted and radiated noise caused by an automobile alternator be suppressed?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E4D06 [Study] Start [Question]

Output: How can noise from an electric motor be suppressed?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E4D07 [Study] Start [Question]

Output: What is a major cause of atmospheric static?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E4D08 [Study] Start [Question]

Output: How can it be determined if line-noise interference is being generated within your home?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E4D09 [Study] Start [Question]

Output: What type of signal is picked up by electrical wiring near a radio transmitter?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E4D10 [Study] Start [Question]

Output: Which of the following types of equipment would be least useful in locating power line noise?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E4E01 [Study] Start [Question]

Output: What circuit construction technique uses leadless components mounted between circuit board pads?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E4E02 [Study] Start [Question]

Output: What is the main drawback of a wire-loop antenna for direction finding?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E4E03 [Study] Start [Question]

Output: What pattern is desirable for a direction-finding antenna?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E4E04 [Study] Start [Question]

Output: What is the triangulation method of direction finding?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E4E05 [Study] Start [Question]

Output: Why is an RF attenuator desirable in a receiver used for direction finding?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E4E06 [Study] Start [Question]

Output: What is a sense antenna?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E4E07 [Study] Start [Question]

Output: What is a loop antenna?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E4E08 [Study] Start [Question]

Output: How can the output voltage of a loop antenna be increased?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E4E09 [Study] Start [Question]

Output: Why is an antenna with a cardioid pattern desirable for a direction-finding system?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E4E10 [Study] Start [Question]

Output: What type of terrain can cause errors in direction finding?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E4E11 [Study] Start [Question]

Output: What is the amateur station activity known as fox hunting?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5A01 [Study] Start [Question]

Output: What can cause the voltage across reactances in series to be larger than the voltage applied to them?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5A02 [Study] Start [Question]

Output: What is resonance in an electrical circuit?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5A03 [Study] Start [Question]

Output: What are the conditions for resonance to occur in an electrical circuit?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5A04 [Study] Start [Question]

Output: When the inductive reactance of an electrical circuit equals its capacitive reactance, what is this condition called?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5A05 [Study] Start [Question]

Output: What is the magnitude of the impedance of a series R-L-C circuit at resonance?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5A06 [Study] Start [Question]

Output: What is the magnitude of the impedance of a circuit with a resistor, an inductor and a capacitor all in parallel, at resonance?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5A07 [Study] Start [Question]

Output: What is the magnitude of the current at the input of a series R-L-C circuit at resonance?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5A08 [Study] Start [Question]

Output: What is the magnitude of the circulating current within the components of a parallel L-C circuit at resonance?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5A09 [Study] Start [Question]

Output: What is the magnitude of the current at the input of a parallel R-L-C circuit at resonance?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5A10 [Study] Start [Question]

Output: What is the relationship between the current through a resonant circuit and the voltage across the circuit?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5A11 [Study] Start [Question]

Output: What is the relationship between the current into (or out of) a parallel resonant circuit and the voltage across the circuit?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5A12 [Study] Start [Question]

Output: What is the half-power bandwidth of a parallel resonant circuit that has a resonant frequency of 1.8 MHz and a Q of 95?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5A13 [Study] Start [Question]

Output: What is the half-power bandwidth of a parallel resonant circuit that has a resonant frequency of 7.1 MHz and a Q of 150?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5A14 [Study] Start [Question]

Output: What is the half-power bandwidth of a parallel resonant circuit that has a resonant frequency of 14.25 MHz and a Q of 150?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5A15 [Study] Start [Question]

Output: What is the half-power bandwidth of a parallel resonant circuit that has a resonant frequency of 21.15 MHz and a Q of 95?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5A16 [Study] Start [Question]

Output: What is the half-power bandwidth of a parallel resonant circuit that has a resonant frequency of 3.7 MHz and a Q of 118?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5A17 [Study] Start [Question]

Output: What is the half-power bandwidth of a parallel resonant circuit that has a resonant frequency of 14.25 MHz and a Q of 187?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5A18 [Study] Start [Question]

Output: What is the resonant frequency of a series RLC circuit if R is 47 ohms, L is 50 microhenrys and C is 40 picofarads?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5A19 [Study] Start [Question]

Output: What is the resonant frequency of a series RLC circuit if R is 47 ohms, L is 40 microhenrys and C is 200 picofarads?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5A20 [Study] Start [Question]

Output: What is the resonant frequency of a series RLC circuit if R is 47 ohms, L is 50 microhenrys and C is 10 picofarads?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5A21 [Study] Start [Question]

Output: What is the resonant frequency of a series RLC circuit if R is 47 ohms, L is 25 microhenrys and C is 10 picofarads?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5A22 [Study] Start [Question]

Output: What is the resonant frequency of a series RLC circuit if R is 47 ohms, L is 3 microhenrys and C is 40 picofarads?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5A23 [Study] Start [Question]

Output: What is the resonant frequency of a series RLC circuit if R is 47 ohms, L is 4 microhenrys and C is 20 picofarads?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5A24 [Study] Start [Question]

Output: What is the resonant frequency of a series RLC circuit if R is 47 ohms, L is 8 microhenrys and C is 7 picofarads?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5A25 [Study] Start [Question]

Output: What is the resonant frequency of a series RLC circuit if R is 47 ohms, L is 3 microhenrys and C is 15 picofarads?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5B01 [Study] Start [Question]

Output: What is the term for the time required for the capacitor in an RC circuit to be charged to 63.2% of the supply voltage?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5B02 [Study] Start [Question]

Output: What is the term for the time required for the current in an RL circuit to build up to 63.2% of the maximum value?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5B03 [Study] Start [Question]

Output: What 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?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5B04 [Study] Start [Question]

Output: The capacitor in an RC circuit is charged to what percentage of the supply voltage after two time constants?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5B05 [Study] Start [Question]

Output: The capacitor in an RC circuit is discharged to what percentage of the starting voltage after two time constants?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5B06 [Study] Start [Question]

Output: What is the time constant of a circuit having two 100-microfarad capacitors and two 470-kilohm resistors all in series?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5B07 [Study] Start [Question]

Output: What is the time constant of a circuit having two 220-microfarad capacitors and two 1-megohm resistors all in parallel?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5B08 [Study] Start [Question]

Output: What is the time constant of a circuit having a 220-microfarad capacitor in series with a 470-kilohm resistor?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5B09 [Study] Start [Question]

Output: How 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?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5B10 [Study] Start [Question]

Output: How 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?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5B11 [Study] Start [Question]

Output: How 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?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5C01 [Study] Start [Question]

Output: What type of graph can be used to calculate impedance along transmission lines?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5C02 [Study] Start [Question]

Output: What type of coordinate system is used in a Smith chart?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5C03 [Study] Start [Question]

Output: What type of calculations can be performed using a Smith chart?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5C04 [Study] Start [Question]

Output: What are the two families of circles that make up a Smith chart?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5C05 [Study] Start [Question]

Output: What type of chart is shown in Figure E5-1?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5C06 [Study] Start [Question]

Output: On the Smith chart shown in Figure E5-1, what is the name for the large outer circle bounding the coordinate portion of the chart?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5C07 [Study] Start [Question]

Output: On the Smith chart shown in Figure E5-1, what is the only straight line shown?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5C08 [Study] Start [Question]

Output: What is the process of normalizing with regard to a Smith chart?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5C09 [Study] Start [Question]

Output: What is the third family of circles, which are added to a Smith chart during the process of solving problems?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5C10 [Study] Start [Question]

Output: In 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?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5C11 [Study] Start [Question]

Output: In 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?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5C13 [Study] Start [Question]

Output: What are the curved lines on a Smith chart?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5C14 [Study] Start [Question]

Output: How are the wavelength scales on a Smith chart calibrated?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5D01 [Study] Start [Question]

Output: What 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?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5D02 [Study] Start [Question]

Output: What 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?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5D03 [Study] Start [Question]

Output: What 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?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5D04 [Study] Start [Question]

Output: What 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?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5D05 [Study] Start [Question]

Output: What 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?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5D06 [Study] Start [Question]

Output: What is the relationship between the current through and the voltage across a capacitor?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5D07 [Study] Start [Question]

Output: What is the relationship between the current through an inductor and the voltage across an inductor?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5D08 [Study] Start [Question]

Output: What 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?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5D09 [Study] Start [Question]

Output: What 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?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5D10 [Study] Start [Question]

Output: What 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?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5D11 [Study] Start [Question]

Output: What 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?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5E01 [Study] Start [Question]

Output: In polar coordinates, what is the impedance of a network comprised of a 100-ohm- reactance inductor in series with a 100-ohm resistor?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5E02 [Study] Start [Question]

Output: In 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?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5E03 [Study] Start [Question]

Output: In 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?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5E04 [Study] Start [Question]

Output: In polar coordinates, what is the impedance of a network comprised of a 400-ohm- reactance capacitor in series with a 300-ohm resistor?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5E05 [Study] Start [Question]

Output: In polar coordinates, what is the impedance of a network comprised of a 400-ohm- reactance inductor in parallel with a 300-ohm resistor?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5E06 [Study] Start [Question]

Output: In polar coordinates, what is the impedance of a network comprised of a 100-ohm- reactance capacitor in series with a 100-ohm resistor?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5E07 [Study] Start [Question]

Output: In polar coordinates, what is the impedance of a network comprised of a 100-ohm- reactance capacitor in parallel with a 100-ohm resistor?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5E08 [Study] Start [Question]

Output: In polar coordinates, what is the impedance of a network comprised of a 300-ohm- reactance inductor in series with a 400-ohm resistor?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5E09 [Study] Start [Question]

Output: When using rectangular coordinates to graph the impedance of a circuit, what does the horizontal axis represent?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5E10 [Study] Start [Question]

Output: When using rectangular coordinates to graph the impedance of a circuit, what does the vertical axis represent?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5E11 [Study] Start [Question]

Output: What do the two numbers represent that are used to define a point on a graph using rectangular coordinates?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5E12 [Study] Start [Question]

Output: If 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?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5E13 [Study] Start [Question]

Output: Why would you plot the impedance of a circuit using the polar coordinate system?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5E14 [Study] Start [Question]

Output: What coordinate system can be used to display the resistive, inductive, and/or capacitive reactance components of an impedance?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5E15 [Study] Start [Question]

Output: What coordinate system can be used to display the phase angle of a circuit containing resistance, inductive and/or capacitive reactance?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5E16 [Study] Start [Question]

Output: In polar coordinates, what is the impedance of a circuit of 100 -j100 ohms impedance?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5E17 [Study] Start [Question]

Output: In polar coordinates, what is the impedance of a circuit that has an admittance of 7.09 millisiemens at 45 degrees?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5E18 [Study] Start [Question]

Output: In rectangular coordinates, what is the impedance of a circuit that has an admittance of 5 millisiemens at -30 degrees?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5E19 [Study] Start [Question]

Output: In rectangular coordinates, what is the admittance of a circuit that has an impedance of 240 ohms at 36.9 degrees?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5E20 [Study] Start [Question]

Output: In 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?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5E21 [Study] Start [Question]

Output: Which 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?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5E22 [Study] Start [Question]

Output: Which 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?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5E23 [Study] Start [Question]

Output: Which 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?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5F01 [Study] Start [Question]

Output: What is the result of skin effect?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5F02 [Study] Start [Question]

Output: What effect causes most of an RF current to flow along the surface of a conductor?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5F03 [Study] Start [Question]

Output: Where does almost all RF current flow in a conductor?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5F04 [Study] Start [Question]

Output: Why does most of an RF current flow near the surface of a conductor?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5F05 [Study] Start [Question]

Output: Why is the resistance of a conductor different for RF currents than for direct currents?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5F06 [Study] Start [Question]

Output: What device is used to store electrical energy in an electrostatic field?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5F07 [Study] Start [Question]

Output: What unit measures electrical energy stored in an electrostatic field?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5F08 [Study] Start [Question]

Output: What is a magnetic field?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5F09 [Study] Start [Question]

Output: In what direction is the magnetic field oriented about a conductor in relation to the direction of electron flow?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5F10 [Study] Start [Question]

Output: What determines the strength of a magnetic field around a conductor?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5F11 [Study] Start [Question]

Output: What is the term for energy that is stored in an electromagnetic or electrostatic field?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5G01 [Study] Start [Question]

Output: What 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?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5G02 [Study] Start [Question]

Output: What 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?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5G03 [Study] Start [Question]

Output: What 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?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5G04 [Study] Start [Question]

Output: What 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?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5G05 [Study] Start [Question]

Output: What 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?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5G06 [Study] Start [Question]

Output: Why is a resistor often included in a parallel resonant circuit?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5G07 [Study] Start [Question]

Output: What is the term for an out-of-phase, nonproductive power associated with inductors and capacitors?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5G08 [Study] Start [Question]

Output: In a circuit that has both inductors and capacitors, what happens to reactive power?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5G09 [Study] Start [Question]

Output: In a circuit where the AC voltage and current are out of phase, how can the true power be determined?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5G10 [Study] Start [Question]

Output: What is the power factor of an R-L circuit having a 60 degree phase angle between the voltage and the current?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5G11 [Study] Start [Question]

Output: How many watts are consumed in a circuit having a power factor of 0.2 if the input is 100-V AC at 4 amperes?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5G12 [Study] Start [Question]

Output: Why would the power used in a circuit be less than the product of the magnitudes of the AC voltage and current?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5G13 [Study] Start [Question]

Output: What 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?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5G14 [Study] Start [Question]

Output: What 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?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5G15 [Study] Start [Question]

Output: What 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?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5G16 [Study] Start [Question]

Output: What 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?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5H01 [Study] Start [Question]

Output: What 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?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5H02 [Study] Start [Question]

Output: What 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?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5H03 [Study] Start [Question]

Output: What is the effective radiated power of a station with 75 watts transmitter power output, 4-dB feed line loss and 10-dBd antenna gain?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5H04 [Study] Start [Question]

Output: What 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?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5H05 [Study] Start [Question]

Output: What is the effective radiated power of a station with 100 watts transmitter power output, 1-dB feed line loss and 6-dBd antenna gain?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5H06 [Study] Start [Question]

Output: What 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?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5H07 [Study] Start [Question]

Output: What 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?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5H08 [Study] Start [Question]

Output: What 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?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5H09 [Study] Start [Question]

Output: What 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?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5H10 [Study] Start [Question]

Output: What 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?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5H11 [Study] Start [Question]

Output: What term describes station output (including the transmitter, antenna and everything in between), when considering transmitter power and system gains and losses?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5H12 [Study] Start [Question]

Output: What is reactive power?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5H13 [Study] Start [Question]

Output: What is the power factor of an RL circuit having a 45 degree phase angle between the voltage and the current?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5H14 [Study] Start [Question]

Output: What is the power factor of an RL circuit having a 30 degree phase angle between the voltage and the current?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5H15 [Study] Start [Question]

Output: How many watts are consumed in a circuit having a power factor of 0.6 if the input is 200V AC at 5 amperes?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5H16 [Study] Start [Question]

Output: How many watts are consumed in a circuit having a power factor of 0.71 if the apparent power is 500 watts?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5I01 [Study] Start [Question]

Output: What is photoconductivity?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5I02 [Study] Start [Question]

Output: What happens to the conductivity of a photoconductive material when light shines on it?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5I03 [Study] Start [Question]

Output: What happens to the resistance of a photoconductive material when light shines on it?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5I04 [Study] Start [Question]

Output: What happens to the conductivity of a semiconductor junction when light shines on it?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5I05 [Study] Start [Question]

Output: What is an optocoupler?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5I06 [Study] Start [Question]

Output: What is an optoisolator?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5I07 [Study] Start [Question]

Output: What is an optical shaft encoder?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5I08 [Study] Start [Question]

Output: What characteristic of a crystalline solid will photoconductivity change?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5I09 [Study] Start [Question]

Output: Which material will exhibit the greatest photoconductive effect when visible light shines on it?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5I10 [Study] Start [Question]

Output: Which material will exhibit the greatest photoconductive effect when infrared light shines on it?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5I11 [Study] Start [Question]

Output: Which material is affected the most by photoconductivity?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5I12 [Study] Start [Question]

Output: What characteristic of optoisolators is often used in power supplies?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E5I13 [Study] Start [Question]

Output: What 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?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E6A01 [Study] Start [Question]

Output: In what application is gallium arsenide used as a semiconductor material in preference to germanium or silicon?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E6A02 [Study] Start [Question]

Output: What type of semiconductor material contains more free electrons than pure germanium or silicon crystals?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E6A03 [Study] Start [Question]

Output: What are the majority charge carriers in P-type semiconductor material?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E6A04 [Study] Start [Question]

Output: What is the name given to an impurity atom that adds holes to a semiconductor crystal structure?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E6A05 [Study] Start [Question]

Output: What is the alpha of a bipolar transistor?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E6A06 [Study] Start [Question]

Output: In Figure E6-1, what is the schematic symbol for a PNP transistor?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E6A07 [Study] Start [Question]

Output: What term indicates the frequency at which a transistor grounded base current gain has decreased to 0.7 of the gain obtainable at 1 kHz?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E6A08 [Study] Start [Question]

Output: What is a depletion-mode FET?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E6A09 [Study] Start [Question]

Output: In Figure E6-2, what is the schematic symbol for an N-channel dual-gate MOSFET?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E6A10 [Study] Start [Question]

Output: In Figure E6-2, what is the schematic symbol for a P-channel junction FET?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E6A11 [Study] Start [Question]

Output: Why do many MOSFET devices have built-in gate-protective Zener diodes?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E6A12 [Study] Start [Question]

Output: What do the initials CMOS stand for?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E6A13 [Study] Start [Question]

Output: How does DC input impedance on the gate of a field-effect transistor compare with the DC input impedance of a bipolar transistor?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E6A14 [Study] Start [Question]

Output: What two elements widely used in semiconductor devices exhibit both metallic and nonmetallic characteristics?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E6A15 [Study] Start [Question]

Output: What type of semiconductor material contains fewer free electrons than pure germanium or silicon crystals?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E6A16 [Study] Start [Question]

Output: What are the majority charge carriers in N-type semiconductor material?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E6A17 [Study] Start [Question]

Output: What are the three terminals of a field-effect transistor?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E6B01 [Study] Start [Question]

Output: What is the principal characteristic of a Zener diode?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E6B02 [Study] Start [Question]

Output: What is the principal characteristic of a tunnel diode?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E6B03 [Study] Start [Question]

Output: What special type of diode is capable of both amplification and oscillation?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E6B04 [Study] Start [Question]

Output: What type of semiconductor diode varies its internal capacitance as the voltage applied to its terminals varies?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E6B05 [Study] Start [Question]

Output: In Figure E6-3, what is the schematic symbol for a varactor diode?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E6B06 [Study] Start [Question]

Output: What is a common use of a hot-carrier diode?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E6B07 [Study] Start [Question]

Output: What limits the maximum forward current rating in a junction diode?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E6B08 [Study] Start [Question]

Output: Structurally, what are the two main categories of semiconductor diodes?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E6B09 [Study] Start [Question]

Output: What is a common use for point contact diodes?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E6B10 [Study] Start [Question]

Output: In Figure E6-3, what is the schematic symbol for a light-emitting diode?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E6B11 [Study] Start [Question]

Output: What voltage gain can be expected from the circuit in Figure E6-4 when R1 is 10 ohms and RF is 470 ohms?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E6B12 [Study] Start [Question]

Output: How does the gain of a theoretically ideal operational amplifier vary with frequency?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E6B13 [Study] Start [Question]

Output: What essentially determines the output impedance of a FET common-source amplifier?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E6B14 [Study] Start [Question]

Output: What 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?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E6B15 [Study] Start [Question]

Output: What voltage gain can be expected from the circuit in Figure E6-4 when R1 is 1800 ohms and RF is 68 kilohms?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E6B16 [Study] Start [Question]

Output: What voltage gain can be expected from the circuit in Figure E6-4 when R1 is 3300 ohms and RF is 47 kilohms?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E6B18 [Study] Start [Question]

Output: Which of the following circuits is used to recover audio from an FM voice signal?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E6B19 [Study] Start [Question]

Output: What is the capture range of a phase-locked loop circuit?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E6B20 [Study] Start [Question]

Output: How are junction diodes rated?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E6B21 [Study] Start [Question]

Output: What is one common use for PIN diodes?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E6B22 [Study] Start [Question]

Output: What type of bias is required for an LED to produce luminescence?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E6B23 [Study] Start [Question]

Output: What is an operational amplifier?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E6B24 [Study] Start [Question]

Output: What is meant by the term op-amp input-offset voltage?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E6B25 [Study] Start [Question]

Output: What is the input impedance of a theoretically ideal op-amp?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E6B26 [Study] Start [Question]

Output: What is the output impedance of a theoretically ideal op-amp?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E6B27 [Study] Start [Question]

Output: What is a phase-locked loop circuit?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E6B28 [Study] Start [Question]

Output: What functions are performed by a phase-locked loop?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E6C01 [Study] Start [Question]

Output: What is the recommended power supply voltage for TTL series integrated circuits?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E6C02 [Study] Start [Question]

Output: What logic state do the inputs of a TTL device assume if they are left open?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E6C03 [Study] Start [Question]

Output: What level of input voltage is high in a TTL device operating with a 5-volt power supply?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E6C04 [Study] Start [Question]

Output: What level of input voltage is low in a TTL device operating with a 5-volt power-supply?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E6C05 [Study] Start [Question]

Output: What is NOT a major advantage of CMOS over other devices?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E6C06 [Study] Start [Question]

Output: Why do CMOS digital integrated circuits have high immunity to noise on the input signal or power supply?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E6C07 [Study] Start [Question]

Output: In Figure E6-5, what is the schematic symbol for an AND gate?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E6C08 [Study] Start [Question]

Output: In Figure E6-5, what is the schematic symbol for a NAND gate?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E6C09 [Study] Start [Question]

Output: In Figure E6-5, what is the schematic symbol for an OR gate?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E6C10 [Study] Start [Question]

Output: In Figure E6-5, what is the schematic symbol for a NOR gate?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E6C11 [Study] Start [Question]

Output: In Figure E6-5, what is the schematic symbol for the NOT operation (inverter)?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E6D01 [Study] Start [Question]

Output: How is the electron beam deflected in a vidicon?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E6D02 [Study] Start [Question]

Output: What is cathode ray tube (CRT) persistence?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E6D03 [Study] Start [Question]

Output: If 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?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E6D04 [Study] Start [Question]

Output: Exceeding what design rating can cause a cathode ray tube (CRT) to generate X- rays?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E6D05 [Study] Start [Question]

Output: Which of the following is true of a charge-coupled device (CCD)?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E6D06 [Study] Start [Question]

Output: What function does a charge-coupled device (CCD) serve in a modern video camera?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E6D07 [Study] Start [Question]

Output: What is a liquid-crystal display (LCD)?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E6D08 [Study] Start [Question]

Output: What material property determines the inductance of a toroidal inductor with a 10-turn winding?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E6D09 [Study] Start [Question]

Output: By careful selection of core material, over what frequency range can toroidal cores produce useful inductors?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E6D10 [Study] Start [Question]

Output: What is one important reason for using powdered-iron toroids rather than ferrite toroids in an inductor?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E6D11 [Study] Start [Question]

Output: What devices are commonly used as VHF and UHF parasitic suppressors at the input and output terminals of transistorized HF amplifiers?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E6D12 [Study] Start [Question]

Output: What is a primary advantage of using a toroidal core instead of a solenoidal core in an inductor?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E6D13 [Study] Start [Question]

Output: How 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?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E6D14 [Study] Start [Question]

Output: How 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?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E6D15 [Study] Start [Question]

Output: What type of CRT deflection is better when high-frequency waves are to be displayed on the screen?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E6D16 [Study] Start [Question]

Output: Which is NOT true of a charge-coupled device (CCD)?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E6D17 [Study] Start [Question]

Output: What is the principle advantage of liquid-crystal display (LCD) devices?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E6D18 [Study] Start [Question]

Output: What is one important reason for using ferrite toroids rather than powdered-iron toroids in an inductor?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E6E01 [Study] Start [Question]

Output: For single-sideband phone emissions, what would be the bandwidth of a good crystal lattice band-pass filter?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E6E02 [Study] Start [Question]

Output: For double-sideband phone emissions, what would be the bandwidth of a good crystal lattice band-pass filter?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E6E03 [Study] Start [Question]

Output: What is a crystal lattice filter?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E6E04 [Study] Start [Question]

Output: What technique is used to construct low-cost, high-performance crystal ladder filters?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E6E05 [Study] Start [Question]

Output: Which of the following factors has the greatest effect in helping determine the bandwidth and response shape of a crystal ladder filter?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E6E06 [Study] Start [Question]

Output: What is the piezoelectric effect?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E6E07 [Study] Start [Question]

Output: What is the characteristic impedance of circuits in which MMICs are designed to work?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E6E08 [Study] Start [Question]

Output: What is the typical noise figure of a monolithic microwave integrated circuit (MMIC) amplifier?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E6E09 [Study] Start [Question]

Output: What type of amplifier device consists of a small pill sized package with an input lead, an output lead and 2 ground leads?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E6E10 [Study] Start [Question]

Output: What typical construction technique do amateurs use when building an amplifier for the microwave bands containing a monolithic microwave integrated circuit (MMIC)?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E6E11 [Study] Start [Question]

Output: How is the operating bias voltage supplied to a monolithic microwave integrated circuit (MMIC) that uses four leads?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E6E12 [Study] Start [Question]

Output: How is the DC power from a voltage source fed to a monolithic microwave integrated circuits (MMIC)?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E6E13 [Study] Start [Question]

Output: What supply voltage do monolithic microwave integrated circuits (MMIC) amplifiers typically require?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E6E14 [Study] Start [Question]

Output: What is the most common package for inexpensive monolithic microwave integrated circuit (MMIC) amplifiers?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E7A01 [Study] Start [Question]

Output: What is a bistable multivibrator circuit?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E7A02 [Study] Start [Question]

Output: How many output level changes are obtained for every two trigger pulses applied to the input of a "T" flip-flop circuit?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E7A03 [Study] Start [Question]

Output: The frequency of an AC signal can be divided electronically by what type of digital circuit?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E7A04 [Study] Start [Question]

Output: How many flip-flops are required to divide a signal frequency by 4?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E7A05 [Study] Start [Question]

Output: What is the characteristic function of an astable multivibrator?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E7A06 [Study] Start [Question]

Output: What is the characteristic function of a monostable multivibrator?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E7A07 [Study] Start [Question]

Output: What logical operation does an AND gate perform?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E7A08 [Study] Start [Question]

Output: What logical operation does a NAND gate perform?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E7A09 [Study] Start [Question]

Output: What logical operation does an OR gate perform?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E7A10 [Study] Start [Question]

Output: What logical operation does a NOR gate perform?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E7A11 [Study] Start [Question]

Output: What is a truth table?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E7A12 [Study] Start [Question]

Output: In a positive-logic circuit, what level is used to represent a logic 1?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E7A13 [Study] Start [Question]

Output: In a negative-logic circuit, what level is used to represent a logic 1?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E7B01 [Study] Start [Question]

Output: For what portion of a signal cycle does a Class AB amplifier operate?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E7B02 [Study] Start [Question]

Output: Which class of amplifier provides the highest efficiency?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E7B03 [Study] Start [Question]

Output: Where on the load line should a bipolar-transistor, common-emitter Class A power amplifier be operated for best efficiency and stability?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E7B04 [Study] Start [Question]

Output: How can parasitic oscillations be eliminated from a power amplifier?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E7B05 [Study] Start [Question]

Output: How can even-order harmonics be reduced or prevented in transmitter amplifiers?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E7B06 [Study] Start [Question]

Output: What can occur when a nonlinear amplifier is used with a single-sideband phone transmitter?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E7B07 [Study] Start [Question]

Output: How can a vacuum-tube power amplifier be neutralized?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E7B08 [Study] Start [Question]

Output: What is the procedure for tuning a vacuum-tube power amplifier having an output pi-network?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E7B09 [Study] Start [Question]

Output: In Figure E7-1, what is the purpose of R1 and R2?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E7B10 [Study] Start [Question]

Output: In Figure E7-1, what is the purpose of C3?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E7B11 [Study] Start [Question]

Output: In Figure E7-1, what is the purpose of R3?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E7B12 [Study] Start [Question]

Output: What type of circuit is shown in Figure E7-1?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E7B13 [Study] Start [Question]

Output: In Figure E7-1, what is the purpose of C1?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E7B14 [Study] Start [Question]

Output: In Figure E7-2, what is the purpose of R?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E7B15 [Study] Start [Question]

Output: In Figure E7-2, what is the purpose of C2?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E7B16 [Study] Start [Question]

Output: What is the purpose of D1 in the circuit shown in Figure E7-3?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E7B17 [Study] Start [Question]

Output: What is the purpose of Q1 in the circuit shown in Figure E7-3?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E7B18 [Study] Start [Question]

Output: What is the purpose of C2 in the circuit shown in Figure E7-3?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E7B19 [Study] Start [Question]

Output: What type of circuit is shown in Figure E7-3?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E7B20 [Study] Start [Question]

Output: What is the purpose of C1 in the circuit shown in Figure E7-3?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E7B21 [Study] Start [Question]

Output: What is the purpose of C3 in the circuit shown in Figure E7-3?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E7B22 [Study] Start [Question]

Output: What is the purpose of R1 in the circuit shown in Figure E7-3?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E7B23 [Study] Start [Question]

Output: What is the purpose of R2 in the circuit shown in Figure E7-3?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E7C01 [Study] Start [Question]

Output: How are the capacitors and inductors of a low-pass filter pi-network arranged between the network's input and output?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E7C02 [Study] Start [Question]

Output: What is an L-network?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E7C03 [Study] Start [Question]

Output: A T-network with series capacitors and a parallel (shunt) inductor has which of the following properties?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E7C04 [Study] Start [Question]

Output: What 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?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E7C05 [Study] Start [Question]

Output: How does a network transform one impedance to another?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E7C06 [Study] Start [Question]

Output: Which filter type is described as having ripple in the passband and a sharp cutoff?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E7C07 [Study] Start [Question]

Output: What are the distinguishing features of an elliptical filter?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E7C08 [Study] Start [Question]

Output: What kind of audio filter would you use to attenuate an interfering carrier signal while receiving an SSB transmission?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E7C09 [Study] Start [Question]

Output: What characteristic do typical SSB receiver IF filters lack that is important to digital communications?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E7C10 [Study] Start [Question]

Output: What kind of digital signal processing audio filter might be used to remove unwanted noise from a received SSB signal?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E7C11 [Study] Start [Question]

Output: What kind of digital signal processing filter might be used in generating an SSB signal?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E7C12 [Study] Start [Question]

Output: Which type of filter would be the best to use in a 2-meter repeater duplexer?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E7C13 [Study] Start [Question]

Output: What is a pi-network?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E7C14 [Study] Start [Question]

Output: What is a pi-L-network?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E7C15 [Study] Start [Question]

Output: Which type of network provides the greatest harmonic suppression?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E7D01 [Study] Start [Question]

Output: What are three major oscillator circuits often used in Amateur Radio equipment?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E7D02 [Study] Start [Question]

Output: What condition must exist for a circuit to oscillate?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E7D03 [Study] Start [Question]

Output: How is the positive feedback coupled to the input in a Hartley oscillator?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E7D04 [Study] Start [Question]

Output: How is the positive feedback coupled to the input in a Colpitts oscillator?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E7D05 [Study] Start [Question]

Output: How is the positive feedback coupled to the input in a Pierce oscillator?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E7D06 [Study] Start [Question]

Output: Which type of oscillator circuits are commonly used in a VFO?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E7D07 [Study] Start [Question]

Output: Why is very stable reference oscillator normally used as part of a phase-locked loop (PLL) frequency synthesizer?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E7D08 [Study] Start [Question]

Output: What is one characteristic of a linear electronic voltage regulator?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E7D09 [Study] Start [Question]

Output: What is one characteristic of a switching electronic voltage regulator?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E7D10 [Study] Start [Question]

Output: What device is typically used as a stable reference voltage in a linear voltage regulator?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E7D11 [Study] Start [Question]

Output: What type of linear regulator is used in applications requiring efficient use of the primary power source?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E7D12 [Study] Start [Question]

Output: What type of linear voltage regulator is used in applications requiring a constant load on the unregulated voltage source?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E7D13 [Study] Start [Question]

Output: Which of the following Zener diodes voltages will result in the best temperature stability for a voltage reference?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E7D14 [Study] Start [Question]

Output: What are the important characteristics of a three-terminal regulator?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E7D15 [Study] Start [Question]

Output: What type of voltage regulator limits the voltage drop across its junction when a specified current passes through it in the reverse-breakdown direction?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E7E01 [Study] Start [Question]

Output: How is an F3E FM-phone emission produced?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E7E02 [Study] Start [Question]

Output: How does a reactance modulator work?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E7E03 [Study] Start [Question]

Output: How does a phase modulator work?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E7E04 [Study] Start [Question]

Output: How can a single-sideband phone signal be generated?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E7E05 [Study] Start [Question]

Output: What 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?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E7E06 [Study] Start [Question]

Output: What audio shaping network is added at a receiver to restore proportionally attenuated lower audio frequencies?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E7E07 [Study] Start [Question]

Output: What is the mixing process?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E7E08 [Study] Start [Question]

Output: What are the principal frequencies that appear at the output of a mixer circuit?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E7E09 [Study] Start [Question]

Output: What occurs in a receiver when an excessive amount of signal energy reaches the mixer circuit?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E7E10 [Study] Start [Question]

Output: What type of frequency synthesizer circuit uses a stable voltage-controlled oscillator, programmable divider, phase detector, loop filter and a reference frequency source?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E7E11 [Study] Start [Question]

Output: What type of frequency synthesizer circuit uses a phase accumulator, lookup table, digital to analog converter and a low-pass antialias filter?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E7E12 [Study] Start [Question]

Output: What are the main blocks of a direct digital frequency synthesizer?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E7E13 [Study] Start [Question]

Output: What information is contained in the lookup table of a direct digital frequency synthesizer?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E7E14 [Study] Start [Question]

Output: What are the major spectral impurity components of direct digital synthesizers?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E7E15 [Study] Start [Question]

Output: What are the major spectral impurity components of phase-locked loop synthesizers?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E7E16 [Study] Start [Question]

Output: What is the process of detection?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E7E17 [Study] Start [Question]

Output: What is the principle of detection in a diode detector?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E7E18 [Study] Start [Question]

Output: What does a product detector do?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E7E19 [Study] Start [Question]

Output: How are FM-phone signals detected?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E7E20 [Study] Start [Question]

Output: What is a frequency discriminator?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E7E21 [Study] Start [Question]

Output: How can an FM-phone signal be produced?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E7F01 [Study] Start [Question]

Output: What is the purpose of a prescaler circuit?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E7F02 [Study] Start [Question]

Output: How many states does a decade counter digital IC have?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E7F03 [Study] Start [Question]

Output: What is the function of a decade counter digital IC?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E7F04 [Study] Start [Question]

Output: What additional circuitry is required in a 100-kHz crystal-controlled marker generator to provide markers at 50 and 25 kHz?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E7F05 [Study] Start [Question]

Output: If a 1-MHz oscillator is used with a divide-by-ten circuit to make a marker generator, what will the output be?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E7F06 [Study] Start [Question]

Output: What is a crystal-controlled marker generator?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E7F07 [Study] Start [Question]

Output: What type of circuit does NOT make a good marker generator?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E7F08 [Study] Start [Question]

Output: What is the purpose of a marker generator?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E7F09 [Study] Start [Question]

Output: What does the accuracy of a frequency counter depend on?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E7F10 [Study] Start [Question]

Output: How does a frequency counter determine the frequency of a signal?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E7F11 [Study] Start [Question]

Output: What is the purpose of a frequency counter?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E7G01 [Study] Start [Question]

Output: What determines the gain and frequency characteristics of an op-amp RC active filter?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E7G02 [Study] Start [Question]

Output: What causes ringing in a filter?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E7G03 [Study] Start [Question]

Output: What are the advantages of using an op-amp instead of LC elements in an audio filter?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E7G04 [Study] Start [Question]

Output: What type of capacitors should be used in a high-stability op-amp RC active filter circuit?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E7G05 [Study] Start [Question]

Output: How can unwanted ringing and audio instability be prevented in a multisection op-amp RC audio filter circuit?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E7G06 [Study] Start [Question]

Output: What parameter must be selected when selecting the resistor and capacitor values for an RC active filter using an op-amp?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E7G07 [Study] Start [Question]

Output: The design of a preselector involves a trade-off between bandwidth and what other factor?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E7G08 [Study] Start [Question]

Output: When designing an op-amp RC active filter for a given frequency range and Q, what steps are typically followed when selecting the external components?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E7G09 [Study] Start [Question]

Output: When 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?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E7G10 [Study] Start [Question]

Output: What are the principal uses of an op-amp RC active filter in amateur circuitry?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler


Input: [Name] E7G11 [Study] Start [Question]

Output: Where should an op-amp RC active audio filter be placed in an amateur receiver?

Questions in US Amateur Radio - Amateur Extra 2002 - Hamboozler