Ham Technician License Practice Quiz

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T0A01: Which is a commonly accepted value for the lowest voltage that can cause a dangerous electric shock?

12 volts
30 volts
120 volts
300 volts

T0B03: Under what circumstances is it safe to climb a tower without a helper or observer?

When no electrical work is being performed
When no mechanical work is being performed
When the work being done is not more than 20 feet above the ground

T0C10: Why is duty cycle one of the factors used to determine safe RF radiation exposure levels?

It affects the average exposure of people to radiation
It affects the peak exposure of people to radiation
It takes into account the antenna feedline loss
It takes into account the thermal effects of the final amplifier

T1A04: Which of the following meets the FCC definition of harmful interference?

Radio transmissions that annoy users of a repeater
Unwanted radio transmissions that cause costly harm to radio station apparatus
That which seriously degrades, obstructs, or repeatedly interrupts a radio communication service operating in accordance with the Radio Regulations
Static from lightning storms

T1B04: Which amateur band are you using when your station is transmitting on 146.52 MHz?

2 meter band
20 meter band
14 meter band
6 meter band

T1C03: What types of international communications are permitted by an FCC-licensed amateur station?

Communications incidental to the purposes of the amateur service and remarks of a personal character
Communications incidental to conducting business or remarks of a personal nature
Only communications incidental to contest exchanges, all other communications are prohibited
Any communications that would be permitted on an international broadcast station

T1D03: When is the transmission of codes or ciphers allowed to hide the meaning of a message transmitted by an amateur station?

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

T1E07: When the control operator is not the station licensee, who is responsible for the proper operation of the station?

All licensed amateurs who are present at the operation
Only the station licensee
Only the control operator
The control operator and the station licensee are equally responsible

T1F01: What type of identification is being used when identifying a station on the air as 'Race Headquarters'?

Tactical call
Self-assigned designator
Broadcast station

T2A05: What should you transmit when responding to a call of CQ?

CQ followed by the other station's call sign
Your call sign followed by the other station's call sign
The other station's call sign followed by your call sign
A signal report followed by your call sign

T2B02: What is the term used to describe the use of a sub-audible tone transmitted with normal voice audio to open the squelch of a receiver?

Carrier squelch
Tone burst

T2C01: What set of rules applies to proper operation of your station when using amateur radio at the request of public service officials?

ARES Rules
FCC Rules
FEMA Rules

T3A03: What antenna polarization is normally used for long-distance weak-signal CW and SSB contacts using the VHF and UHF bands?

Right-hand circular
Left-hand circular

T3B08: What are the frequency limits of the VHF spectrum?

30 to 300 kHz
30 to 300 MHz
300 to 3000 kHz
300 to 3000 MHz

T3C07: What band is best suited to communicating via meteor scatter?

10 meters
6 meters
2 meters
70 cm

T4A09: Which would you use to reduce RF current flowing on the shield of an audio cable?

Band-pass filter
Low-pass filter
Ferrite choke

T4B01: What may happen if a transmitter is operated with the microphone gain set too high?

The output power might be too high
The output signal might become distorted
The frequency might vary
The SWR might increase

T5A09: What is the name for a current that reverses direction on a regular basis?

Alternating current
Direct current
Circular current
Vertical current

T5B08: How many microfarads are 1,000,000 picofarads?

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

T5C04: What is the basic unit of inductance?

The coulomb
The farad
The henry
The ohm

T5D08: What is the current flowing through a 100-ohm resistor connected across 200 volts?

20,000 amperes
0.5 amperes
2 amperes
100 amperes

T6A04: What electrical component stores energy in an electric field?


T6B01: What class of electronic components is capable of using a voltage or current signal to control current flow?


T6C03: What is component 2 in figure T1?

Indicator lamp

T6D07: Which of the following is commonly used as a visual indicator?

Zener diode
Bipolar transistor

T7A03: What is the function of a mixer in a superheterodyne receiver?

To reject signals outside of the desired passband
To combine signals from several stations together
To shift the incoming signal to an intermediate frequency
To connect the receiver with an auxiliary device, such as a TNC

T7B09: What could be happening if another operator reports a variable high-pitched whine on the audio from your mobile transmitter?

Your microphone is picking up noise from an open window
You have the volume on your receiver set too high
You need to adjust your squelch control
Noise on the vehicle's electrical system is being transmitted along with your speech audio

T7C10: Why should the outer jacket of coaxial cable be resistant to ultraviolet light?

Ultraviolet resistant jackets prevent harmonic radiation
Ultraviolet light can increase losses in the cable's jacket
Ultraviolet and RF signals can mix together, causing interference
Ultraviolet light can damage the jacket and allow water to enter the cable

T7D11: Which of the following precautions should be taken when measuring circuit resistance with an ohmmeter?

Ensure that the applied voltages are correct
Ensure that the circuit is not powered
Ensure that the circuit is grounded
Ensure that the circuit is operating at the correct frequency

T8A03: Which type of voice modulation is most often used for long-distance or weak signal contacts on the VHF and UHF bands?


T8B02: How much transmitter power should be used on the uplink frequency of an amateur satellite or space station?

The maximum power of your transmitter
The minimum amount of power needed to complete the contact
No more than half the rating of your linear amplifier
Never more than 1 watt

T8C08: What is required in place of on-air station identification when sending signals to a radio control model using amateur frequencies?

Voice identification must be transmitted every 10 minutes
Morse code ID must be sent once per hour
A label indicating the licensee's name, call sign and address must be affixed to the transmitter
A flag must be affixed to the transmitter antenna with the station call sign in 1 inch high letters or larger

T8D10: Which of the following can be used to transmit CW in the amateur bands?

Straight Key
Electronic Keyer
Computer Keyboard
All of these choices are correct

T9A06: What type of antennas are the quad, Yagi, and dish?

Non-resonant antennas
Loop antennas
Directional antennas
Isotropic antennas

T9B05: What generally happens as the frequency of a signal passing through coaxial cable is increased?

The apparent SWR increases
The reflected power increases
The characteristic impedance increases
The loss increases