Technician Licensing Class

Technician Licensing Class

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Amateur Radio Technician ClassElement 2 Course Presentation

ELEMENT 2 SUB-ELEMENTS (Groupings)

• About Ham Radio• Call Signs• Control• Mind the Rules• Tech Frequencies• Your First Radio• Going On The Air!• Repeaters• Emergency!• Weak Signal Propagation

3

Amateur Radio Technician ClassElement 2 Course Presentation

ELEMENT 2 SUB-ELEMENTS (Groupings)

• Talk to Outer Space!• Your Computer Goes Ham Digital!• Multi-Mode Radio Excitement• Run Some Interference Protection• Electrons – Go With the Flow!• It’s the Law, per Mr. Ohm!Picture This!• Antennas• Feed Me with Some Good Coax!• Safety First!

Valid July 1, 2010

Through

June 30, 2014

Picture This!

Element 2 Technician Class Question Pool

T6C01 What is the name for standardized representations of components in an electrical wiring diagram?

A. Electrical depictionsB. Grey sketchC. Schematic

symbolsD. Component

callouts

T6C12 What do the symbols on an electrical circuit schematic diagram represent?

A. Electrical componentsB. Logic statesC. Digital

codesD. Traffic

nodes

CAPACITORCAPACITOR

RESISTORRESISTOR

DIODEDIODELEDLED

TRANSISTORTRANSISTOR

BATTERYBATTERY

ANTENNAANTENNA

T6C13 Which of the following is accurately represented in electrical circuit schematic diagrams?

A. Wire lengthsB. Physical appearance of componentsC. The way components are interconnectedD. All of these choices

20m CW Transmitt

er by ON6M

U

T6C10 What is component 3 in Figure T3?

A. ConnectorB. MeterC. Variable capacitorD. Variable inductor


A. AntennaB. TransmitterC. Dummy loadD. Ground

T6D08 Which of the following is used together with an inductor to make a tuned circuit?

A. ResistorB. Zener diodeC. PotentiometerD. Capacitor

Tank Circuit or Tuned Circuit

VariableCapacitor

s

Inductor

Tank Circuit

Schematic


A. ResistorB. TransistorC. BatteryD. connector


A. ResistorB. TransistorC. Indicator lampD. Connector

T6D10 What is the function of component 2 in Figure T1?

A. Give off light when current flows through it

B. Supply electrical energy

C. Control the flow of current

D. Convert electrical energy into radio waves


A. ResistorB. TransistorC. LampD. Ground symbol


A. ResistorB. TransistorC. BatteryD. Ground symbol

T6D03 What type of switch is represented by item 3 in Figure T2?

A. Single-pole single-throwB. Single-pole double-throwC. Double-pole single-throwD. Double-pole double-throw


A. Variable inductorB. Double-pole switchC. PotentiometerD. Transformer


A. ResistorB. CapacitorC. Regulator ICD. Transistor


A. ResistorB. InductorC. Regulator ICD. Light emitting diode


A. Variable capacitorB. Variable inductorC. Variable resistorD. Variable transformer

T6D04 Which of the following can be used to display signal strength on a numeric scale?

A. PotentiometerB. TransistorC. MeterD. Relay

T6D02 What best describes a relay?

A. A switch controlled by an electromagnetB. A current controlled amplifierC. An optical sensorD. A pass transistor

T5B09 What is the approximate amount of change, measured in decibels (dB), of a power increase from 5 watts to 10 watts?

A. 2 dBB. 3 dBC. 5 dBD. 10 dB

3 dB6 dB9 dB

10 dB20 dB30 dB40 dB

2x4x8x

10x100x

1000x10,000x

dB Change

• 3 dB gain = a factor of 2.

• “twice as much” is +3 db

• “half as much” is –3 db

T5B10 What is the approximate amount of change, measured in decibels (dB), of a power decrease from 12 watts to 3 watts?

A. 1 dBB. 3 dBC. 6 dBD. 9 dB

3 dB6 dB9 dB


2x4x8x

10x100x

1000x10,000x

dB Change




12

3— = 4x 6 db

T5B11 What is the approximate amount of change, measured in decibels (dB), of a power increase from 20 watts to 200 watts?

A. 10 dBB. 12 dBC. 18 dBD. 28 dB

3 dB6 dB9 dB


2x4x8x

10x100x

1000x10,000x

dB Change




200

20— = 10x 10 db

T6D05 What type of circuit controls the amount of voltage from a power supply?

A. RegulatorB. OscillatorC. FilterD. Phase inverter Voltage Regulator

T6D06 What component is commonly used to change 120V AC house current to a lower AC voltage for other uses?

A. Variable capacitorB. TransformerC. TransistorD. Diode Voltage

Transformer

T6D09 What is the name of a device that combines several semiconductors and other components into one package?

A. TransducerB. Multi-pole relayC. Integrated circuitD. Transformer Integrated Circuit Chips

T6B07 What does the abbreviation "LED" stand for?

A. Low Emission DiodeB. Light Emitting DiodeC. Liquid Emission DetectorD. Long Echo Delay

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

A. LEDB. FETC. Zener diodeD. Bipolar transistor

T5B02 What is another way to specify a radio signal frequency of 1,500,000 hertz?

A. 1500 kHzB. 1500 MHzC. 15 GHzD. 15 kHz

Metric Exponent English

Tera-

1012

Trillion Giga-

109

Billion Mega-

106

Million Kilo-

103

Thousand

Centi

10-2

Hundredth Milli-

10-3

Thousandth Micro-

10-6

Millionth Nano-

10-9

Billionth

Pico-

10-12

Trillionth

1500 kilo = 1500 x 1000 = 1,500,000

T5B03 How many volts are equal to one kilovolt?

A. One one-thousandth of a voltB. One hundred voltsC. One thousand voltsD. One million volts


Tera-

1012

Trillion Giga-

109

Billion Mega-

106

Million Kilo-

103

Thousand

Centi

10-2

Hundredth Milli-

10-3

Thousandth Micro-

10-6

Millionth Nano-

10-9

Billionth

Pico-

10-12

Trillionth

1 kilo = 1 x 1000 = 1,000

T5B06 If an ammeter calibrated in amperes is used to measure a 3000-milliampere current, what reading would it show?

A. 0.003 amperesB. 0.3 amperesC. 3 amperesD. 3,000,000 amperes


Tera-

1012

Trillion Giga-

109

Billion Mega-

106

Million Kilo-

103

Thousand

Centi

10-2

Hundredth Milli-

10-3

Thousandth Micro-

10-6

Millionth Nano-

10-9

Billionth

Pico-

10-12

Trillionth

1 3000 milli- = 3000 x = 3 1000

T5B05 Which of the following is equivalent to 500 milliwatts?

A. 0.02 wattsB. 0.5 wattsC. 5 wattsD. 50 watts


Tera-

1012

Trillion Giga-

109

Billion Mega-

106

Million Kilo-

103

Thousand

Centi

10-2

Hundredth Milli-

10-3

Thousandth Micro-

10-6

Millionth Nano-

10-9

Billionth

Pico-

10-12

Trillionth

1500 milli- = 500 x = 0.5 1000

T5B01 How many milliamperes is 1.5 amperes?

A. 15 milliamperesB. 150 milliamperesC. 1,500 milliamperesD. 15,000 milliamperes


Tera-

1012

Trillion Giga-

109

Billion Mega-

106

Million Kilo-

103

Thousand

Centi

10-2

Hundredth Milli-

10-3

Thousandth Micro-

10-6

Millionth Nano-

10-9

Billionth

Pico-

10-12

Trillionth

11500 milli- = 1500 x = 1.5 1000

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

A. 0.001 microfaradsB. 1 microfaradC. 1000 microfaradsD. 1,000,000,000 microfarads


Tera-

1012

Trillion Giga-

109

Billion Mega-

106

Million Kilo-

103

Thousand

Centi

10-2

Hundredth Milli-

10-3

Thousandth Micro-

10-6

Millionth Nano-

10-9

Billionth

Pico-

10-12

Trillionth

1,000,000 pico- = 106 x 10–12 = 106–12 = 10–6 = 1 micro-

T5B04 How many volts are equal to one microvolt?

A. One one-millionth of a voltB. One million voltsC. One thousand kilovoltsD. One one-thousandth of a volt


Tera-

1012

Trillion Giga-

109

Billion Mega-

106

Million Kilo-

103

Thousand

Centi

10-2

Hundredth Milli-

10-3

Thousandth Micro-

10-6

Millionth Nano-

10-9

Billionth

Pico-

10-12

Trillionth

1 micro- = 10–6 = 1 millionth

T7D08 Which of the following types of solder is best for radio and electronic use?

A. Acid-core solderB. Silver solderC. Rosin-core solderD. Aluminum solder

T7D09 What is the characteristic appearance of a "cold" solder joint?

A. Dark black spotsB. A bright or shiny surfaceC. A grainy or dull surfaceD. A greenish tint

T7D07 Which of the following measurements are commonly made using a multimeter?

A. SWR and RF powerB. Signal strength and noiseC. Impedance and reactanceD. Voltage and resistance

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

A. Ensure that the applied voltages are correctB. Ensure that the circuit is not poweredC. Ensure that the circuit is groundedD. Ensure that the circuit is operating at the

correct frequency

T7D06 Which of the following might damage a multimeter?

A. Measuring a voltage too small for the chosen scale

B. Leaving the meter in the milliamps position overnight

C. Attempting to measure voltage when using the resistance setting

D. Not allowing it to warm up properly

T7D10 What is probably happening when an ohmmeter, connected across a circuit, initially indicates a low resist-ance and then shows increasing resistance with time?

A. The ohmmeter is defectiveB. The circuit contains a large capacitorC. The circuit contains a large inductorD. The circuit is a relaxation oscillator

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Technician Licensing Class