General Class Practice Test

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 General pool.

Good Luck!


Which of the following limitations apply to transmitter power on every amateur band?

Only the minimum power necessary to carry out the desired communications should be used
Power must be limited to 200 watts when using data transmissions
Power should be limited as necessary to avoid interference to another radio service on the frequency
Effective radiated power cannot exceed 1500 watts


The frequency allocations of which ITU region apply to radio amateurs operating in North and South America?

Region 4
Region 3
Region 2
Region 1


What is the maximum height above ground to which an antenna structure may be erected without requiring notification to the FAA and registration with the FCC, provided it is not at or near a public use airport?

50 feet
100 feet
200 feet
300 feet


What is the standard sideband used to generate a JT65, JT9, or FT8 digital signal when using AFSK in any amateur band?



Which of the following frequencies is within the General class portion of the 80-meter band?

1855 kHz
2560 kHz
3560 kHz
3650 kHz


Which of the following factors determine the characteristic impedance of a parallel conductor antenna feed line?

The distance between the centers of the conductors and the radius of the conductors
The distance between the centers of the conductors and the length of the line
The radius of the conductors and the frequency of the signal
The frequency of the signal and the length of the line


Which of the following describes a waterfall display?

Frequency is horizontal, signal strength is vertical, time is intensity
Frequency is vertical, signal strength is intensity, time is horizontal
Frequency is horizontal, signal strength is intensity, time is vertical
Frequency is vertical, signal strength is horizontal, time is intensity


What determines the frequency of an LC oscillator?

The number of stages in the counter
The number of stages in the divider
The inductance and capacitance in the tank circuit
The time delay of the lag circuit


What is the minimum allowable discharge voltage for maximum life of a standard 12 volt lead-acid battery?

6 volts
8.5 volts
10.5 volts
12 volts


What precaution should be taken when installing a ground-mounted antenna?

It should not be installed higher than you can reach
It should not be installed in a wet area
It should be limited to 10 feet in height
It should be installed such that it is protected against unauthorized access


What is another term for the mixing of two RF signals?

Phase inverting


What causes HF propagation conditions to vary periodically in a roughly 28-day cycle?

Long term oscillations in the upper atmosphere
Cyclic variation in Earth's radiation belts
The sun's rotation on its axis
The position of the moon in its orbit


What should you do if a CW station sends "QRS?"

Send slower
Change frequency
Increase your power
Repeat everything twice


Generally, who should respond to a station in the contiguous 48 states who calls "CQ DX"?

Any caller is welcome to respond
Only stations in Germany
Any stations outside the lower 48 states
Only contest stations


What is the name of the process by which sunlight is changed directly into electricity?

Photovoltaic conversion
Photon emission
Photon decomposition


According the National Electrical Code, what is the minimum wire size that may be used safely for wiring with a 20 ampere circuit breaker?

AWG number 20
AWG number 16
AWG number 12
AWG number 8


What is the inductance of three 10 millihenry inductors connected in parallel?

0.30 henries
3.3 henries
3.3 millihenries
30 millihenries


What dB change represents a factor of two increase or decrease in power?

Approximately 2 dB
Approximately 3 dB
Approximately 6 dB
Approximately 12 dB


What is a reason why many amateurs keep a station log?

The ITU requires a log of all international contacts
The ITU requires a log of all international third-party traffic
The log provides evidence of operation needed to renew a license without retest
To help with a reply if the FCC requests information


What is the combined vertical and horizontal polarization pattern of a multi-wavelength, horizontal loop antenna?

A figure-eight, similar to a dipole
Four major loops with deep nulls
Virtually omnidirectional with a lower peak vertical radiation angle than a dipole
Radiation maximum is straight up


What kind of device is an integrated circuit operational amplifier?

Programmable Logic


What portion of the AC cycle is converted to DC by a half-wave rectifier?

90 degrees
180 degrees
270 degrees
360 degrees


Which of the following is an advantage of a receiver DSP IF filter as compared to an analog filter?

A wide range of filter bandwidths and shapes can be created
Fewer digital components are required
Mixing products are greatly reduced
The DSP filter is much more effective at VHF frequencies


How does a signal that reads 20 dB over S9 compare to one that reads S9 on a receiver, assuming a properly calibrated S meter?

It is 10 times less powerful
It is 20 times less powerful
It is 20 times more powerful
It is 100 times more powerful


What is impedance?

The electric charge stored by a capacitor
The inverse of resistance
The opposition to the flow of current in an AC circuit
The force of repulsion between two similar electric fields


Which of the following is a typical application for a Direct Digital Synthesizer?

A high-stability variable frequency oscillator in a transceiver
A digital voltmeter
A digital mode interface between a computer and a transceiver
A high-sensitivity radio direction finder


What type of modulation is used by the FT8 digital mode?

8-tone frequency shift keying
Vestigial sideband
Amplitude compressed AM
Direct sequence spread spectrum


Which of the following applies when selecting a frequency for lowest attenuation when transmitting on HF?

Select a frequency just below the MUF
Select a frequency just above the LUF
Select a frequency just below the critical frequency
Select a frequency just above the critical frequency


What type of propagation allows signals to be heard in the transmitting station's skip zone?

Faraday rotation
Chordal hop


What is a practical way to avoid harmful interference on an apparently clear frequency before calling CQ on CW or phone?

Send "QRL?" on CW, followed by your call sign; or, if using phone, ask if the frequency is in use, followed by your call sign
Listen for 2 minutes before calling CQ
Send the letter "V" in Morse code several times and listen for a response, or say "test" several times and listen for a response
Send "QSY" on CW or if using phone, announce "the frequency is in use," then give your call sign and listen for a response


What is one advantage of selecting the opposite, or "reverse," sideband when receiving CW signals on a typical HF transceiver?

Interference from impulse noise will be eliminated
More stations can be accommodated within a given signal passband
It may be possible to reduce or eliminate interference from other signals
Accidental out-of-band operation can be prevented


Which of the following must be connected to an antenna analyzer when it is being used for SWR measurements?

Antenna and feed line
All these choices are correct


On which of the following band segments may you operate if you are a Technician class operator and have a Certificate of Successful Completion of Examination (CSCE) for General class privileges?

Only the Technician band segments until your upgrade is posted in the FCC database
Only on the Technician band segments until your license arrives in the mail
On any General or Technician class band segment
On any General or Technician class band segment except 30 meters and 60 meters


How does the forward gain of a two-element quad antenna compare to the forward gain of a three-element Yagi antenna?

About the same
About 2/3 as much
About 1.5 times as much
About twice as much


What is the radiation pattern of a dipole antenna in free space in a plane containing the conductor?

It is a figure-eight at right angles to the antenna
It is a figure-eight off both ends of the antenna
It is a circle (equal radiation in all directions)
It has a pair of lobes on one side of the antenna and a single lobe on the other side