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Which of the following frequencies is available to a control operator holding a General Class license?
When choosing a transmitting frequency, what should you do to comply with good amateur practice?
What is the maximum symbol rate permitted for RTTY or data emission transmissions on the 10-meter band?
If a person has an expired FCC issued amateur radio license of General Class or higher, what is required before they can receive a new license?
When may a 10-meter repeater retransmit the 2-meter signal from a station having a Technician Class control operator?
Which of the following is an advantage when using single sideband as compared to other analog voice modes on the HF amateur bands?
Who may be the control operator of an amateur station transmitting in RACES to assist relief operations during a disaster?
What does the Q signal "QRN" mean?
Which of the following is required by the FCC rules when operating in the 60-meter band?
Which of the following describes a waterfall display?
What effect does a Sudden Ionospheric Disturbance have on the daytime ionospheric propagation of HF radio waves?
What does MUF stand for?
What is Near Vertical Incidence Sky-wave (NVIS) propagation?
Which of the following is a use for the IF shift control on a receiver?
Which of the following is an advantage of an oscilloscope versus a digital voltmeter?
What could be a symptom of a ground loop somewhere in your station?
What frequency range is occupied by a 3 kHz LSB signal when the displayed carrier frequency is set to 7.178 MHz?
What is the reason that a series diode is connected between a solar panel and a storage battery that is being charged by the panel?
What unit is used to measure reactance?
What would be the RMS voltage across a 50 ohm dummy load dissipating 1200 watts?
What is the inductance of a 20 millihenry inductor connected in series with a 50 millihenry inductor?
What is the primary purpose of a screen grid in a vacuum tube?
Which of the following is an advantage of CMOS integrated circuits compared to TTL integrated circuits?
What portion of the AC cycle is converted to DC by a full-wave rectifier?
Which of the following describes a linear amplifier?
Which circuit is used to combine signals from the carrier oscillator and speech amplifier then send the result to the filter in some single sideband phone transmitters?
What is the name of the process that changes the phase angle of an RF wave to convey information?
Why is it important to know the duty cycle of the mode you are using when transmitting?
What part of a data packet contains the routing and handling information?
What standing wave ratio will result when connecting a 50 ohm feed line to an antenna that has a purely resistive 300 ohm feed point impedance?
What is one disadvantage of a directly fed random-wire HF antenna?
Which of the following would increase the bandwidth of a Yagi antenna?
What is an advantage of vertical stacking of horizontally polarized Yagi antennas?
What must you do if an evaluation of your station shows RF energy radiated from your station exceeds permissible limits?
Which of the following is good practice for lightning protection grounds?