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What is the first action you should take if your digital message forwarding station inadvertently forwards a communication that violates FCC rules?
What is the National Radio Quiet Zone?
What types of amateur stations may automatically retransmit the radio signals of other amateur stations?
What is the definition of the term telemetry?
Which of the following best describes the Volunteer Examiner accreditation process?
Which of the following geographic descriptions approximately describes "Line A"?
What is one way to predict the location of a satellite at a given time?
What is vestigial sideband modulation?
During a VHF/UHF contest, in which band segment would you expect to find the highest level of activity?
What is one advantage of using JT65 coding?
What is the typical bandwidth of a properly modulated MFSK16 signal?
What characterizes libration fading of an EME signal?
Why is chordal hop propagation desirable?
What is indicated by a rising A or K index?
Which of the following parameters would a spectrum analyzer display on the vertical and horizontal axes?
Which of the following can be used as a relative measurement of the Q for a series-tuned circuit?
What is the term for the blocking of one FM phone signal by another, stronger FM phone signal?
How can intermodulation interference between two repeaters occur?
What undesirable effect can occur when using an IF noise blanker?
What is the magnitude of the impedance of a series RLC circuit at resonance?
What is the time constant of a circuit having two 220 microfarad capacitors and two 1 megohm resistors, all in parallel?
What coordinate system is often used to display the phase angle of a circuit containing resistance, inductive and/or capacitive reactance?
What type of energy is stored in an electromagnetic or electrostatic field?
In Figure E6-2, what is the schematic symbol for an N-channel dual-gate MOSFET?
Which of the following describes a type of semiconductor diode?
What is BiCMOS logic?
What devices are commonly used as VHF and UHF parasitic suppressors at the input and output terminals of a transistor HF amplifier?
How is voltage from a power supply normally furnished to the most common type of monolithic microwave integrated circuit (MMIC)?
What absorbs the energy from light falling on a photovoltaic cell?
What type of logic defines "1" as a high voltage?
Which of the following is a likely result when a Class C amplifier is used to amplify a single-sideband phone signal?
What is one advantage of a Pi-matching network over an L-matching network consisting of a single inductor and a single capacitor?
What is one characteristic of a switching electronic voltage regulator?
What occurs when an excessive amount of signal energy reaches a mixer circuit?
How frequently must an analog signal be sampled by an analog-to-digital converter so that the signal can be accurately reproduced?
How does the gain of an ideal operational amplifier vary with frequency?
How can an oscillator's microphonic responses be reduced?
What type of information can be conveyed using digital waveforms?
What is the modulation index of an FM-phone signal having a maximum carrier deviation of plus or minus 6 kHz when modulated with a 2 kHz modulating frequency?
What is an advantage of Gray code in digital communications where symbols are transmitted as multiple bits
What parameter might indicate that excessively high input levels are causing distortion in an AFSK signal?
What is included in the total resistance of an antenna system?
What type of computer program technique is commonly used for modeling antennas?
What is the radiation pattern of two 1/4 wavelength vertical antennas spaced a 1/2 wavelength apart and fed in phase?
What is an advantage of using top loading in a shortened HF vertical antenna?
How must the driven element in a 3-element Yagi be tuned to use a hairpin matching system?
Which of the following determines the velocity factor of a transmission line?
What do the arcs on a Smith chart represent?
What is an advantage of using a shielded loop antenna for direction finding?
What is one of the potential hazards of using microwaves in the amateur radio bands?