Technician Licensing Class

Your First Radio

Section 11

Your First Radio

• T4B4 Quick access to a favorite frequency on your transceiver can be done by storing the frequency in a

memory channel.

T9A4 A disadvantage of the "rubber duck" antenna supplied with most handheld radio transceivers is that it does not transmit or receive as effectively as a full-sized antenna.

Your First Radio

• T9A7 A good reason not to use a "rubber duck" antenna inside your car is that signals can be significantly weaker than when it is outside of the vehicle.

• T7A10 An RF power amplifier increases the low-power output from a handheld transceiver.

VHF/UHF Power Amplifier

Your First Radio

• T8A4 FM is the type of modulation most commonly used for VHF and UHF voice repeaters.

• T8A9 The approximate bandwidth of a VHF repeater FM phone signal is between 5 and 15 kHz.

• T8A2 FM is the type of modulation most commonly used for VHF packet radio transmissions. (Packet is wireless data transmission)

• T4A1 Some microphone connectors on amateur transceivers include push-to-talk functions and voltage links for powering the microphone.

ConnectorPush to talk button

Your First Radio

T4A2 A set of headphones could be used in place of a regular speaker to help you copy signals in a noisy area.

Your First Radio

T4A3 Preventing voltage fluctuations from reaching sensitive circuits is a good reason to use a regulated power supply for communications equipment.

Jetstream JTPS30M Regulated Power Supply

MFJ-4125 13.8VDC@22Amp

Your First Radio

• T8A3 SSB is the type of voice modulation most often used for long-distance or weak signal contacts on the VHF and UHF bands.

• T8A7 The primary advantage of single sideband over FM for voice transmissions is that SSB signals have narrower bandwidth.

• T8A6 The sideband normally used for 10 meter HF, VHF and UHF single-sideband communications is upper sideband. (upper frequencies=upper sideband)

Your First Radio

• T7A6 A transverter is a device that takes the output of a low-powered 28 MHz SSB exciter and produces a 222 MHz output signal.

Take Aways

A way to enable quick access to a favorite frequency on your transceiver is to store the frequency in a memory channel.

A disadvantage of the "rubber duck" antenna supplied with most handheld radio transceivers is it does not transmit or receive as effectively as a full-sized antenna.

A good reason NOT to use a "rubber duck" antenna inside your car is that signals can be significantly weaker than when it is outside of the vehicle.

Take Aways

An RF power amplifier increases the low-power output from a handheld transceiver.

FM is most commonly used for VHF and UHF voice repeaters.

The approximate bandwidth of a VHF repeater FM phone signal is between 5 and 15 kHz.

Frequency modulation (FM) is most commonly used for VHF packet radio transmissions.

Take Aways

Some connectors on amateur transceivers include push-to-talk and voltages for powering the microphone.

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

A good reason to use a regulated power supply for communications equipment is it prevents voltage fluctuations from reaching sensitive circuits.

SSB voice modulation is most often used for long-distance or weak signal contacts on the VHF and UHF bands.

Take Aways

The primary advantage of single sideband over FM for voice transmissions is SSB signals have narrower bandwidth.

Upper sideband (USB) is normally used for 10 meter HF, VHF and UHF single-sideband communications.

A Transverter takes the output of a low-powered 28 MHz SSB exciter and produces a 222 MHz output signal.

Valid July 1, 2010

Through

June 30, 2014

Your First Radio

Element 2 Technician Class Question Pool

Element 2 Technician Class Question Pool

T4B04 What is a way to enable quick access to a favorite frequency on your transceiver?

A. Enable the CTCSS tonesB. Store the frequency in a memory

channelC. Disable the CTCSS tonesD. Use the scan mode to select the

desired frequency

T9A04 What is a disadvantage of the "rubber duck" antenna supplied with most handheld radio transceivers?

A. It does not transmit or receive as effectively as a full-sized antenna

B. It transmits a circularly polarized signalC. If the rubber end cap is lost it will

unravel very quicklyD. All of these choices are correct

T9A07 What is a good reason not to use a "rubber duck" antenna inside your car?

A. Signals can be significantly weaker than when it is outside of the vehicle

B. It might cause your radio to overheat

C. The SWR might decrease, decreasing the signal strength

D. All of these choices are correct

T7A10 What device increases the low-power output from a handheld

transceiver?

A. A voltage dividerB. An RF power amplifierC. An impedance networkD. A voltage regulator

T8A04 Which type of modulation is most commonly used for VHF and UHF voice repeaters?

A. AMB. SSBC. PSKD. FM

T8A09 What is the approximate bandwidth of a VHF repeater FM phone signal?

A. Less than 500 HzB. About 150 kHzC. Between 5 and 15 kHzD. Between 50 and 125 kHz

T8A02 What type of modulation is most commonly used for VHF packet radio transmissions?

A. FMB. SSBC. AMD. Spread Spectrum

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

A. All transceivers use the same microphone connector type

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

C. All transceivers using the same connector type are wired identically

D. Un-keyed connectors allow any microphone to be connected

T4A02 What could be used in place of a regular speaker to help you copy signals in a noisy area?

A. A video displayB. A low pass filterC. A set of headphonesD. A boom microphone

T4A03 Which is a good reason to use a regulated power supply for communications

equipment?

A. It prevents voltage fluctuations from reaching sensitive circuits

B. A regulated power supply has FCC approval

C. A fuse or circuit breaker regulates the power

D. Power consumption is independent of load

T8A03 Which type of voice modulation is most often used for long-distance or weak

signal contacts on the VHF and UHF bands?

A. FMB. AMC. SSBD. PM

T8A07 What is the primary advantage of single sideband over FM for voice transmissions?

A. SSB signals are easier to tuneB. SSB signals are less susceptible to

interferenceC. SSB signals have narrower

bandwidthD. All of these choices are correct

T8A06 Which sideband is normally used for 10 meter HF, VHF and UHF single-sideband communications?

A. Upper sidebandB. Lower sidebandC. Suppressed sidebandD. Inverted sideband

T7A06 What device takes the output of a low-powered 28 MHz SSB exciter and

produces a 222 MHz output signal?

A. High-pass filterB. Low-pass filterC. TransverterD. Phase converter