Current Ham Radio Test Pools
Select the most correct answer for each question, then submit your practice test to check your score. This practice test randomly pulls one question from each topic in the Amateur Extra pool.
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?
What impedance does a 1/8 wavelength transmission line present to a generator when the line is shorted at the far end?
What does a third-order intercept level of 40 dBm mean with respect to receiver performance?
How does a diode detector function?
What is the purpose of the series capacitor in a gamma-type antenna matching network?
How should an antenna analyzer be connected when measuring antenna resonance and feed point impedance?
What letter is commonly used to represent susceptance?
What must the administering VEs do after the administration of a successful examination for an amateur operator license?
What are the majority charge carriers in N-type semiconductor material?
Within what distance must an amateur station protect an FCC monitoring facility from harmful interference?
What is the primary effect of extremely short rise or fall time on a CW signal?
From which of the following bands is amateur radio contesting generally excluded?
On the Smith chart shown in Figure E9-3, what is the name for the large outer circle on which the reactance arcs terminate?
Which of the following types of conductors would be best for minimizing losses in a station's RF ground system?
Which of the following is typically used to construct a MMIC-based microwave amplifier?
What is the equivalent circuit of a quartz crystal?
What device is typically used as a stable reference voltage in a linear voltage regulator?
By how much does the VHF/UHF radio horizon distance exceed the geometric horizon?
Which of the following has the largest effect on an SDR receiver's linearity?
Which of the following is an advantage of using vestigial sideband for standard fast- scan TV transmissions?
What may occur when a directional antenna is operated at different frequencies within the band for which it was designed?
Which is generally true for low band (160 meter and 80 meter) receiving antennas?
If a station in a message forwarding system inadvertently forwards a message that is in violation of FCC rules, who is primarily accountable for the rules violation?
How is the timing of JT65 contacts organized?
What would be the most accurate way of measuring the RMS voltage of a complex waveform?
What kind of filter would you use to attenuate an interfering carrier signal while receiving an SSB transmission?
What is the function of hysteresis in a comparator?
What describes Orthogonal Frequency Division Multiplexing?
How are impedances described in polar coordinates?
How does the performance of a horizontally polarized antenna mounted on the side of a hill compare with the same antenna mounted on flat ground?
Which of the following is the most appropriate use of an op-amp active filter?
What class of licensee is authorized to be the control operator of a space station?
What logical operation does an OR gate perform?
Which of the following types of signals can be relayed through a linear transponder?
Where on the load line of a Class A common emitter amplifier would bias normally be set?
What is the result of skin effect?
How much gain does an antenna have compared to a 1/2-wavelength dipole when it has 6 dB gain over an isotropic antenna?
What is the purpose of the prescaler function on a frequency counter?
What privileges are authorized in the U.S. to persons holding an amateur service license granted by the Government of Canada?
What is a major cause of atmospheric static?
What type of modulation is used for JT65 contacts?
What sets the minimum detectable signal level for an SDR in the absence of atmospheric or thermal noise?
What is a solid state relay?
Which of the following injuries can result from using high-power UHF or microwave transmitters?
What is an electromagnetic wave?
How does ARQ accomplish error correction?
What type of bias is required for an LED to emit light?
Which of the following could account for hearing an echo on the received signal of a distant station?
Which of the following operating arrangements allows an FCC-licensed U.S. citizen to operate in many European countries, and alien amateurs from many European countries to operate in the U.S.?
What are three oscillator circuits used in Amateur Radio equipment?