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Technician Class Exam Question Pool

effective 7/01/2014 thru 6/30/2018

    Unseen questions
    Weak questions
    Review questions
    Learned questions
    Incorrect answer choices  

T4A-2014: Station setup: connecting microphones; reducing unwanted emissions; power source; connecting a computer; RF grounding; connecting digital equipment; connecting an SWR meter

T4A01-2014: Which of the following is true concerning the microphone connectors on amateur transceivers?

Some connectors include push-to-talk and voltages for powering the microphone

All transceivers use the same microphone connector type

All transceivers using the same connector type are wired identically

Un-keyed connectors allow any microphone to be connected

T4A02-2014: How might a computer be used as part of an amateur radio station?

All of these choices are correct

For logging contacts and contact information

For sending and/or receiving CW

For generating and decoding digital signals

T4A03-2014: Which is a good reason to use a regulated power supply for communications equipment?

It prevents voltage fluctuations from reaching sensitive circuits

A regulated power supply has FCC approval

A fuse or circuit breaker regulates the power

Power consumption is independent of load

T4A04-2014: Where must a filter be installed to reduce harmonic emissions from your station?

Between the transmitter and the antenna

Between the receiver and the transmitter

At the station power supply

At the microphone

T4A05-2014: Where should an in-line SWR meter be connected to monitor the standing wave ratio of the station antenna system?

In series with the feed line, between the transmitter and antenna

In series with the station's ground

In parallel with the push-to-talk line and the antenna

In series with the power supply cable, as close as possible to the radio

T4A06-2014: Which of the following would be connected between a transceiver and computer in a packet radio station?

Terminal node controller




T4A07-2014: How is a computer’s sound card used when conducting digital communications using a computer?

The sound card provides audio to the microphone input and converts received audio to digital form

The sound card communicates between the computer CPU and the video display

The sound card records the audio frequency for video display

All of these choices are correct

T4A08-2014: Which type of conductor is best to use for RF grounding?

Flat strap

Round stranded wire

Round copper-clad steel wire

Twisted-pair cable

T4A09-2014: Which of the following could you use to cure distorted audio caused by RF current flowing on the shield of a microphone cable?

Ferrite choke

Band-pass filter

Low-pass filter


T4A10-2014: What is the source of a high-pitched whine that varies with engine speed in a mobile transceiver’s receive audio?

The alternator

The ignition system

The electric fuel pump

Anti-lock braking system controllers

T4A11-2014: Where should the negative return connection of a mobile transceiver's power cable be connected?

At the battery or engine block ground strap

At the antenna mount

To any metal part of the vehicle

Through the transceiver’s mounting bracket

T4A12-2014: What could be happening if another operator reports a variable high-pitched whine on the audio from your mobile transmitter?

Noise on the vehicle’s electrical system is being transmitted along with your speech audio

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

Color key:
● = Unseen
● = Weak
● = Review
● = Learned
● = Incorrect answer
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T3C-2014: Propagation modes: line of sight; sporadic E; meteor and auroral scatter and reflections; tropospheric ducting; F layer skip; radio horizon
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Technician Class Exam Question Pool
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T4B-2014: Operating controls: tuning; use of filters; squelch function; AGC; repeater offset; memory channels
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