Technician 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 Technician pool.

Good Luck!


Why should you not set your transmit frequency to be exactly at the edge of an amateur band or sub-band?

To allow for calibration error in the transmitter frequency display
So that modulation sidebands do not extend beyond the band edge
To allow for transmitter frequency drift
All of these choices are correct


How many microfarads are equal to 1,000,000 picofarads?

0.001 microfarads
1 microfarad
1000 microfarads
1,000,000,000 microfarads


What determines the transmitting privileges of an amateur station?

The frequency authorized by the frequency coordinator
The frequencies printed on the license grant
The highest class of operator license held by anyone on the premises
The class of operator license held by the control operator


What is the function of the SSB/CW-FM switch on a VHF power amplifier?

Change the mode of the transmitted signal
Set the amplifier for proper operation in the selected mode
Change the frequency range of the amplifier to operate in the proper portion of the band
Reduce the received signal noise


How does RF radiation differ from ionizing radiation (radioactivity)?

RF radiation does not have sufficient energy to cause genetic damage
RF radiation can only be detected with an RF dosimeter
RF radiation is limited in range to a few feet
RF radiation is perfectly safe


Where may SSB phone be used in amateur bands above 50 MHz?

Only in sub-bands allocated to General class or higher licensees
Only on repeaters
In at least some portion of all these bands
On any band as long as power is limited to 25 watts


How much voltage does a mobile transceiver typically require?

About 12 volts
About 30 volts
About 120 volts
About 240 volts


Which of the following instruments can be used to determine if an antenna is resonant at the desired operating frequency?

An antenna analyzer
A Q meter
A frequency counter


Which of the following is an advantage of HF vs VHF and higher frequencies?

HF antennas are generally smaller
HF accommodates wider bandwidth signals
Long distance ionospheric propagation is far more common on HF
There is less atmospheric interference (static) on HF


What is the purpose of the squelch control on a transceiver?

To set the highest level of volume desired
To set the transmitter power level
To adjust the automatic gain control
To mute receiver output noise when no signal is being received


Which part of the atmosphere enables the propagation of radio signals around the world?

The stratosphere
The troposphere
The ionosphere
The magnetosphere


What is probably happening when an ohmmeter, connected across an unpowered circuit, initially indicates a low resistance and then shows increasing resistance with time?

The ohmmeter is defective
The circuit contains a large capacitor
The circuit contains a large inductor
The circuit is a relaxation oscillator


Which of the following best describes Broadband-Hamnet (TM), also referred to as a high-speed multi-media network?

An amateur-radio-based data network using commercial Wi-Fi gear with modified firmware
A wide-bandwidth digital voice mode employing DRM protocols
A satellite communications network using modified commercial satellite TV hardware
An internet linking protocol used to network repeaters


With regard to satellite communications, what is Doppler shift?

A change in the satellite orbit
A mode where the satellite receives signals on one band and transmits on another
An observed change in signal frequency caused by relative motion between the satellite and the earth station
A special digital communications mode for some satellites


What type of circuit controls the amount of voltage from a power supply?

Phase inverter


What is an advantage of using a properly mounted 5/8 wavelength antenna for VHF or UHF mobile service?

It has a lower radiation angle and more gain than a 1/4 wavelength antenna
It has very high angle radiation for better communicating through a repeater
It eliminates distortion caused by reflected signals
It has 10 times the power gain of a 1/4 wavelength design


What is the name for the distance a radio wave travels during one complete cycle?

Wave speed
Wave spread


Which of the following battery types is rechargeable?

Nickel-metal hydride
Lead-acid gel-cell
All of these choices are correct


Which of the following is a purpose of the Amateur Radio Service as stated in the FCC rules and regulations?

Providing personal radio communications for as many citizens as possible
Providing communications for international non-profit organizations
Advancing skills in the technical and communication phases of the radio art
All of these choices are correct


Why is it unwise to install a 20-ampere fuse in the place of a 5-ampere fuse?

The larger fuse would be likely to blow because it is rated for higher current
The power supply ripple would greatly increase
Excessive current could cause a fire
All of these choices are correct


Which of the following is an accepted practice for an amateur operator who has checked into a net?

Provided that the frequency is quiet, announce the station call sign and location every 5 minutes
Move 5 kHz away from the net's frequency and use high power to ask other hams to keep clear of the net frequency
Remain on frequency without transmitting until asked to do so by the net control station
All of these choices are correct


What is meant by Voice Over Internet Protocol (VoIP) as used in amateur radio?

A set of rules specifying how to identify your station when linked over the internet to another station
A set of guidelines for contacting DX stations during contests using internet access
A technique for measuring the modulation quality of a transmitter using remote sites monitored via the internet
A method of delivering voice communications over the internet using digital techniques


Which of the following conductors provides the lowest impedance to RF signals?

Round stranded wire
Round copper-clad steel wire
Twisted-pair cable
Flat strap


What is the current through a 100-ohm resistor connected across 200 volts?

20,000 amperes
0.5 amperes
2 amperes
100 amperes


What does the abbreviation LED stand for?

Low Emission Diode
Light Emitting Diode
Liquid Emission Detector
Long Echo Delay


Which of the following is good practice when installing ground wires on a tower for lightning protection?

Put a loop in the ground connection to prevent water damage to the ground system
Make sure that all bends in the ground wires are clean, right-angle bends
Ensure that connections are short and direct
All of these choices are correct


If your license has expired and is still within the allowable grace period, may you continue to operate a transmitter on Amateur Radio Service frequencies?

No, transmitting is not allowed until the FCC license database shows that the license has been renewed
Yes, but only if you identify using the suffix GP
Yes, but only during authorized nets
Yes, for up to two years


Which of the following formats of a self-assigned indicator is acceptable when identifying using a phone transmission?

KL7CC stroke W3
KL7CC slant W3
KL7CC slash W3
All of these choices are correct


What is the basic unit of capacitance?

The farad
The ohm
The volt
The henry


Which of the following is required when making on-the-air test transmissions?

Identify the transmitting station
Conduct tests only between 10 p.m. and 6 a.m. local time
Notify the FCC of the transmissions
All of these choices are correct


When is it permissible to transmit messages encoded to hide their meaning?

Only during contests
Only when operating mobile
Only when transmitting control commands to space stations or radio control craft
Only when frequencies above 1280 MHz are used


Which sideband is normally used for 10 meter HF, VHF, and UHF single-sideband communications?

Upper sideband
Lower sideband
Suppressed sideband
Inverted sideband


Which of the following connectors is most suitable for frequencies above 400 MHz?

A UHF (PL-259/SO-239) connector
A Type N connector
An RS-213 connector
A DB-25 connector


Which of the following is a way to reduce or eliminate interference from an amateur transmitter to a nearby telephone?

Put a filter on the amateur transmitter
Reduce the microphone gain
Reduce the SWR on the transmitter transmission line
Put an RF filter on the telephone


What is component 1 in figure T1?

Circuit Diagram