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!


What is the approximate maximum distance along the Earth's surface that is normally covered in one hop using the E region?

180 miles
1,200 miles
2,500 miles
12,000 miles


Which of the following must a person have before they can be an administering VE for a Technician Class license examination?

Notification to the FCC that you want to give an examination
Receipt of a CSCE for General Class
Possession of a properly obtained telegraphy license
An FCC General Class or higher license and VEC accreditation


Why is the polarity of applied voltages important for polarized capacitors?

Incorrect polarity can cause the capacitor to short-circuit
Reverse voltages can destroy the dielectric layer of an electrolytic capacitor
The capacitor could overheat and explode
All of these choices are correct


How close to the lower edge of the 40-meter General Class phone segment should your displayed carrier frequency be when using 3 kHz wide LSB?

At least 3 kHz above the edge of the segment
At least 3 kHz below the edge of the segment
Your displayed carrier frequency may be set at the edge of the segment
At least 1 kHz above the edge of the segment


Why is a time delay sometimes included in a transmitter keying circuit?

To prevent stations from interfering with one another
To allow the transmitter power regulators to charge properly
To allow time for transmit-receive changeover operations to complete properly before RF output is allowed
To allow time for a warning signal to be sent to other stations


What types of messages for a third party in another country may be transmitted by an amateur station?

Any message, as long as the amateur operator is not paid
Only messages for other licensed amateurs
Only messages relating to Amateur Radio or remarks of a personal character, or messages relating to emergencies or disaster relief
Any messages, as long as the text of the message is recorded in the station log


When is it permissible to communicate with amateur stations in countries outside the areas administered by the Federal Communications Commission?

Only when the foreign country has a formal third party agreement filed with the FCC
When the contact is with amateurs in any country except those whose administrations have notified the ITU that they object to such communications
When the contact is with amateurs in any country as long as the communication is conducted in English
Only when the foreign country is a member of the International Amateur Radio Union


What is the modulation envelope of an AM signal?

The waveform created by connecting the peak values of the modulated signal
The carrier frequency that contains the signal
Spurious signals that envelop nearby frequencies
The bandwidth of the modulated signal


Which of the following is a limitation on transmitter power on the 28 MHz band for a General Class control operator?

100 watts PEP output
1000 watts PEP output
1500 watts PEP output
2000 watts PEP output


If a receiver mixes a 13.800 MHz VFO with a 14.255 MHz received signal to produce a 455 kHz intermediate frequency (IF) signal, what type of interference will a 13.345 MHz signal produce in the receiver?

Quadrature noise
Image response
Mixer interference
Intermediate interference


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


Which of the following components should be added to an inductor to increase the inductance?

A capacitor in series
A resistor in parallel
An inductor in parallel
An inductor in series


When may the FCC restrict normal frequency operations of amateur stations participating in RACES?

When they declare a temporary state of communication emergency
When they seize your equipment for use in disaster communications
Only when all amateur stations are instructed to stop transmitting
When the President's War Emergency Powers have been invoked


What is one disadvantage of using a shortened mobile antenna as opposed to a full size antenna?

Short antennas are more likely to cause distortion of transmitted signals
Short antennas can only receive circularly polarized signals
Operating bandwidth may be very limited
Harmonic radiation may increase


What must you do if an evaluation of your station shows RF energy radiated from your station exceeds permissible limits?

Take action to prevent human exposure to the excessive RF fields
File an Environmental Impact Statement (EIS-97) with the FCC
Secure written permission from your neighbors to operate above the controlled MPE limits
All of these choices are correct


How many states does a 3-bit binary counter have?



What should be done by any person preparing to climb a tower that supports electrically powered devices?

Notify the electric company that a person will be working on the tower
Make sure all circuits that supply power to the tower are locked out and tagged
Unground the base of the tower
All of these choices are correct


What is the output PEP from a transmitter if an oscilloscope measures 500 volts peak-to-peak across a 50 ohm resistive load connected to the transmitter output?

8.75 watts
625 watts
2500 watts
5000 watts


When may music be transmitted by an amateur station?

At any time, as long as it produces no spurious emissions
When it is unintentionally transmitted from the background at the transmitter
When it is transmitted on frequencies above 1215 MHz
When it is an incidental part of a manned space craft retransmission


Which of the following is an advantage of using a gamma match for impedance matching of a Yagi antenna to 50 ohm coax feed line?

It does not require that the elements be insulated from the boom
It does not require any inductors or capacitors
It is useful for matching multiband antennas
All of these choices are correct


Which of the following devices can be used for impedance matching at radio frequencies?

A transformer
A Pi-network
A length of transmission line
All of these choices are correct


Which of the following digital modes is designed to operate at extremely low signal strength on the HF bands?

FSK441 and Hellschreiber
JT9 and JT65


What makes HF scatter signals often sound distorted?

The ionospheric layer involved is unstable
Ground waves are absorbing much of the signal
The E-region is not present
Energy is scattered into the skip zone through several different radio wave paths


What is meant by the term ROM?

Resistor Operated Memory
Read Only Memory
Random Operational Memory
Resistant to Overload Memory


What is meant by the term "software defined radio" (SDR)?

A radio in which most major signal processing functions are performed by software
A radio that provides computer interface for automatic logging of band and frequency
A radio that uses crystal filters designed using software
A computer model that can simulate performance of a radio to aid in the design process


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 instruments may be used to monitor relative RF output when making antenna and transmitter adjustments?

A field strength meter
An antenna noise bridge
A multimeter
A Q meter


At what height above ground is an NVIS antenna typically installed?

As close to 1/2 wavelength as possible
As close to one wavelength as possible
Height is not critical as long as it is significantly more than 1/2 wavelength
Between 1/10 and 1/4 wavelength


Which of the following frequencies is in the General Class portion of the 40-meter band?

7.250 MHz
7.500 MHz
40.200 MHz
40.500 MHz


What is the most common frequency shift for RTTY emissions in the amateur HF bands?

85 Hz
170 Hz
425 Hz
850 Hz


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?

You cannot determine SWR from impedance values


What is the approximate length for a 1/4 wave vertical antenna cut for 28.5 MHz?

8 feet
11 feet
16 feet
21 feet


Which of the following statements is true of voice VOX operation versus PTT operation?

The received signal is more natural sounding
It allows "hands free" operation
It occupies less bandwidth
It provides more power output


What does the Q signal "QSL" mean?

Send slower
We have already confirmed by card
I acknowledge receipt
We have worked before


How are radio communications usually affected by the charged particles that reach the Earth from solar coronal holes?

HF communications are improved
HF communications are disturbed
VHF/UHF ducting is improved
VHF/UHF ducting is disturbed