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T4Edit

The T4 section of the Technician test contains information on amateur radio practices and station setup.

T4AEdit

The T4A section covers station setup; microphone, speaker, headphones, filters, power source, connecting a computer, RF grounding.
Click "Expand" to reveal the questions.

T4A01

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

T4A02

What could be used in place of a regular speaker to help you copy signals in a noisy area?
A set of headphones

T4A03

Which is a good reason to use a regulated power supply for communications equipment?
It prevents voltage fluctuations from reaching sensitive circuits

T4A04

Where must a filter be installed to reduce harmonic emissions?
Between the transmitter and the antenna

T4A05

What type of filter should be connected to a TV receiver as the first step in trying to prevent RF overload from a nearby 2 meter transmitter?
Band-reject filter

T4A06

Which of the following would be connected between a transceiver and computer in a packet radio station?
Terminal node controller

T4A07

How is the 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

T4A08

Which type of conductor is best to use for RF grounding?
Flat strap

T4A09

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

T4A10

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

T4A11

Where should a mobile transceiver’s power negative connection be made?
At the battery or engine block ground strap

T4BEdit

The T4B section covers operating controls; tuning, use of filters, squelch, AGC, repeater offset, memory channels.
Click "Expand" to reveal the questions.

T4B01

What may happen if a transmitter is operated with the microphone gain set too high?
The output signal might become distorted

T4B02

Which of the following can be used to enter the operating frequency on a modern transceiver?
The keypad or VFO knob

T4B03

What is the purpose of the squelch control on a transceiver?
To mute receiver output noise when no signal is being received

T4B04

What is a way to enable quick access to a favorite frequency on your transceiver?
Store the frequency in a memory channel

T4B05

Which of the following would reduce ignition interference to a receiver?
Turn on the noise blanker

T4B06

Which of the following controls could be used if the voice pitch of a single-sideband signal seems too high or low?
The receiver RIT or clarifier.

T4B07

What does the term "RIT" mean?
Receiver Incremental Tuning

T4B08

What is the advantage of having multiple receive bandwidth choices on a multimode transceiver?
Permits noise or interference reduction by selecting a bandwidth matching the mode

T4B09

Which of the following is an appropriate receive filter to select in order to minimize noise and interference for SSB reception?
2400 Hz

T4B10

Which of the following is an appropriate receive filter to select in order to minimize noise and interference for CW reception?
500 Hz

T4B11

Which of the following describes the common meaning of the term “repeater offset”?
The difference between the repeater’s transmit and receive frequencies