1. Technician Licensing Class
Multi-Mode Radio Excitement
Valid July 1, 2014
Through
June 30, 2018 1

2. Amateur Radio Technician Class Element 2 Course Presentation
ELEMENT 2 SUB-ELEMENTS (Groupings)
About Ham Radio
Call Signs
Control
Mind the Rules
Tech Frequencies
Your First Radio
Going Solo
Repeaters
Emergency!
Weak Signal Propagation 2

3. Amateur Radio Technician Class Element 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!
Go Picture These!
Antennas
Feed Me With Some Good Coax!
Safety First! 3

4. Multi-Mode Radio Excitement
A transceiver is a unit
combining the functions
of a transmitter and receiver. T7A02
A multi-mode VHF transceiver
is most useful for VHF
weak-signal communications.
T7A09 4

5. Multi-Mode Radio Excitement
SSB (single sideband) is the voice mode most often used for long-distance (weak signal) contacts on the VHF and UHF bands. T8A03 5

6. Multi-Mode Radio Excitement
The primary advantage of single sideband over FM for voice transmissions is SSB signals have narrower bandwidth. T8A07
Single sideband (SSB) is a form of amplitude modulation. T8A01 6

7. Multi-Mode Radio Excitement
Upper sideband is normally used for 10 meter HF, VHF and UHF single-sideband communications. as our communications mode. T8A06
Modulation describes
combining speech with
an RF carrier signal. T7A08
Amplitude-modulated signal 7

8. Multi-Mode Radio Excitement
3 kHz is the approximate bandwidth of a single sideband voice signal. T8A08 8

9. Multi-Mode Radio Excitement
2400 Hz is an appropriate receive filter bandwidth to select in order to minimize noise and interference for SSB reception. T4B09 9

10. Multi-Mode Radio Excitement
The use of SSB phone is permitted in at least some portion of all the bands above 50 MHz. T2B13
The receiver RIT or clarifier controls could be used if the voice pitch of a single-sideband signal seems too high or low. T4B06
“RIT” means Receiver Incremental Tuning. T4B07 10

11. Multi-Mode Radio Excitement
Some microphone connectors on amateur transceivers include push-to-talk and voltages for powering the microphone. T4A01
The name of a circuit that generates a signal of a desired frequency is called an oscillator. T7A05
The type of emission that has the narrowest bandwidth is CW. T8A05 11

12. Multi-Mode Radio Excitement
150 Hz is the approximate
maximum bandwidth
required to transmit
a CQ signal. T8A11
500 Hz is an appropriate
receive filter bandwidth
to select in order to minimize
noise and interference for
CW reception. T4B10 12

13. Multi-Mode Radio Excitement
The advantage of having multiple receive bandwidth choices on a multimode transceiver is that it permits noise or interference reduction by selecting a bandwidth matching the mode. T4B08 13

14. Multi-Mode Radio Excitement
Sensitivity is the term that describes the ability of a receiver to detect the presence of a signal. T7A01 14

15. Multi-Mode Radio Excitement
A mixer is used to convert a radio signal from one frequency to another. T7A03
Station Signal
Signal C at 455 kHz
Signal A at 800 kHz (or at 1200 kHz)
Intermediate Frequency
Local Oscillator
Signal B at 1255 kHz (or at 1655 kHz) 15

16. Multi-Mode Radio Excitement
The term that describes the ability of a receiver to discriminate between multiple signals is called selectivity. T7A04 16

17. Multi-Mode Radio Excitement
The function of automatic gain control or AGC is to keep received audio relatively constant. T4B12
The RF preamplifier is installed between the antenna and the receiver. T7A11 17

18. Multi-Mode Radio Excitement
A transverter takes the output of a low-powered 28 MHz SSB exciter and produces a 222 MHz output signal. T7A06
A good reason to use a regulated power supply for communications equipment is that it prevents voltage fluctuations from reaching sensitive circuits. T4A03 18

19. Element 2 Technician Class Question Pool Multi-Mode Radio Excitement
Valid July 1, 2014
Through
June 30, 2018

20. T7A02 What is a transceiver?
A type of antenna switch
A unit combining the functions of a transmitter and receiver
A component in a repeater which filters out unwanted interference
A type of antenna matching network

21. T7A09. Which of the following devices is most useful for
T7A09 Which of the following devices is most useful for VHF weak-signal communication?
A quarter-wave vertical antenna
A multi-mode VHF transceiver
An omni-directional antenna
A mobile VHF FM transceiver

22. T8A03. Which type of voice mode is most often used for
T8A03 Which type of voice mode is most often used for long-distance (weak signal) contacts on the VHF and UHF bands ? FM
DRM
SSB PM

23. T8A07. What is the primary advantage of single sideband
T8A07 What is the primary advantage of single sideband over FM for voice transmissions?
SSB signals are easier to tune
SSB signals are less susceptible to interference
SSB signals have narrower bandwidth
All of these choices are correct

24. T8A01 Which of the following is a form of amplitude modulation?
Spread-spectrum
Packet radio
Single sideband
Phase shift keying

25. T8A06. Which sideband is normally used for 10 meter
T8A06 Which sideband is normally used for 10 meter HF, VHF and UHF single-sideband communications?
Upper sideband
Lower sideband
Suppressed sideband
Inverted sideband

26. T7A08. Which of the following describes
T7A08 Which of the following describes combining speech with an RF carrier signal?
Impedance matching
Oscillation
Modulation
Low-pass filtering

27. T8A08. What is the approximate bandwidth of a single
T8A08 What is the approximate bandwidth of a single sideband voice signal?
1 kHz
3 kHz
6 kHz
15 kHz

28. T4B09. Which of the following is an appropriate receive
T4B09 Which of the following is an appropriate receive filter bandwidth to select in order to minimize noise and interference for SSB reception?
500 Hz
1000 Hz
2400 Hz
5000 Hz

29. T2B13. Which of the following is true of the use of SSB
T2B13 Which of the following is true of the use of SSB phone in amateur bands above 50 MHz?
It is permitted only by holders of a General Class or higher license
It is permitted only on repeaters
It is permitted in at least some portion of all the amateur bands above 50 MHz
It is permitted only on when power is limited to no more than 100 watts

30. T4B06. Which of the following controls could be used if the
T4B06 Which of the following controls could be used if the voice pitch of a single-sideband signal seems too high or low?
The AGC or limiter
The bandwidth selection
The tone squelch
The receiver RIT or clarifier

31. T4B07 What does the term "RIT" mean?
Receiver Input Tone
Receiver Incremental Tuning
Rectifier Inverter Test
Remote Input Transmitter

32. T4A01. Which of the following is true concerning the
T4A01 Which of the following is true concerning the microphone connectors on amateur transceivers?
All transceivers use the same microphone connector type
Some connectors include push-to-talk and voltages for powering the microphone
All transceivers using the same connector type are wired identically
Un-keyed connectors allow any microphone to be connected

33. T7A05. What is the name of a circuit that generates
T7A05 What is the name of a circuit that generates a signal of a desired frequency?
Reactance modulator
Product detector
Low-pass filter
Oscillator

34. T8A05. Which of the following types of emission has the
T8A05 Which of the following types of emission has the narrowest bandwidth?
FM voice
SSB voice CW
Slow-scan TV

35. T8A11. What is the approximate maximum bandwidth
T8A11 What is the approximate maximum bandwidth required to transmit a CW signal?
2.4 kHz
150 Hz
1000 Hz
15 kHz

36. T4B10. Which of the following is an appropriate receive filter
T4B10 Which of the following is an appropriate receive filter bandwidth to select in order to minimize noise and interference for CW reception?
500 Hz
1000 Hz
2400 Hz
5000 Hz

37. T4B08. What is the advantage of having multiple
T4B08 What is the advantage of having multiple receive bandwidth choices on a multimode transceiver?
Permits monitoring several modes at once
Permits noise or interference reduction by selecting a bandwidth matching the mode
Increases the number of frequencies that can be stored in memory
Increases the amount of offset between receive and transmit frequencies

38. T7A01. Which term describes the ability of a receiver to
T7A01 Which term describes the ability of a receiver to detect the presence of a signal?
Linearity
Sensitivity
Selectivity
Total Harmonic Distortion

39. T7A03. Which of the following is used to convert a radio
T7A03 Which of the following is used to convert a radio signal from one frequency to another?
Phase splitter
Mixer
Inverter
Amplifier

40. T7A04. Which term describes the ability of a receiver to
T7A04 Which term describes the ability of a receiver to discriminate between multiple signals?
Discrimination ratio
Sensitivity
Selectivity
Harmonic Distortion

41. T4B12 What is the function of automatic gain control or AGC?
To keep received audio relatively constant
To protect an antenna from lightning
To eliminate RF on the station cabling
asymmetric goniometer control used for antenna matching

42. T7A11 Where is an RF preamplifier installed?
Between the antenna and the receiver
At the output of the transmitter’s power amplifier
Between transmitter and antenna tuner
At the receiver’s audio output

43. T7A06. What device takes the output of a low-powered
T7A06 What device takes the output of a low-powered 28 MHz SSB exciter and produces a 222 MHz output signal?
High-pass filter
Low-pass filter
Transverter
Phase converter

44. T4A03. Which is a good reason to use a regulated power
T4A03 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