The Final Exam is the culmination of the Advanced Amateur Radio course, designed to test your comprehensive understanding and skills across all the essential areas covered in the course, including:

1 Advanced Theory
2 Advanced Components and Circuits
3 Measurements
4 Power Supplies
5 transmitters, neutralisations
6 Receivers
7 Feedlines – Matching and Antenna Systems

By integrating knowledge from these varied but interconnected topics, the exam assesses your readiness to tackle the practical and theoretical challenges of advanced amateur radio, aligning with the requirements for the Spectrum Management Advanced Amateur Radio License.

Essential for those aiming for the Spectrum Management Advanced Amateur Radio License, this exam evaluates your proficiency in everything from basic electronics to the complexities of antenna systems, ensuring a thorough preparation for both the certification exam and practical operation.

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8.1.8 Final Exam

Advanced Amateur Radio – Final Exam

This exam consolidates your knowledge across critical topics, including electronics theory, operating practices, measurements, and antenna systems, among others, preparing you for the Spectrum Management Advanced Amateur Radio License. It’s your opportunity to demonstrate a comprehensive understanding of the field, crucial for advancing in amateur radio.

1 / 50

Category: Oscillators, mixers, tunings

A-006-002-008: In a superheterodyne receiver without an RF amplifier, the input to the mixer stage has a variable capacitor in parallel with an inductance. The variable capacitor is for:

2 / 50

Category: Electrostatic and electromagnetic fields, skin effect

A-001-002-009 What is the term for energy that is stored in an electromagnetic or electrostatic field?

3 / 50

Category: Detection, audio, automatic gain controls

A-006-004-008: AGC voltage is applied to the:

4 / 50

Category: Polarization, helical beam, parabolic antennas

A-007-005-011: You want to convert a surplus parabolic dish for amateur radio use, the gain of this antenna depends on:

5 / 50

Category: Dip meters, signal generator

A-003-003-010: The dip meter is most directly applicable to:

6 / 50

Category: Dip meters, signal generator

A-003-003-007: What is a signal generator?

7 / 50

Category: Signal processing – AF, IF, and RFs

A-005-007-004: How many bits are required to provide 256 discrete levels, or a ratio of 256:1?

8 / 50

Category: Transformer and rectifier circuits, voltage doubler circuit, PIPs

A-004-001-007: The ripple frequency produced by a half-wave power supply connected to a normal household circuit is:

9 / 50

Category: RF, IF amplifiers, selectivity

A-006-003-011: Normally, front-end selectivity is provided by the resonant networks both before and after the RF stage in a superheterodyne receiver. This whole section of the receiver is often referred to as the:

10 / 50

Category: Waveguide, microstrip lines

A-007-009-005: Which of the following statements about waveguide IS NOT correct?

11 / 50

Category: Advanced Antenna Design

What is the main advantage of using a Yagi-Uda antenna?

12 / 50

Category: Quality factor (Q)

A-001-005-008: What is the Q of a parallel RLC circuit, if it is resonant at 3.625 MHz, L is 3 microhenrys and R is 2.2 kilohms?

13 / 50

Category: Velocity factor, the effect of line terminated in non-characteristic impedances

A-007-002-005: What is the velocity factor of a transmission line?

14 / 50

Category: Transmitters, neutralisations

A-005-003-001: In a simple 2 stage CW transmitter circuit, the oscillator stage and the class C amplifier stage are inductively coupled by a RF transformer. Another role of the RF transformer is to:

15 / 50

Category: Velocity factor, the effect of line terminated in non-characteristic impedances

A-007-002-006: What is the term for the ratio of the actual velocity at which a signal travels through a transmission line to the speed of light in a vacuum?

16 / 50

Category: Silicon-controlled rectifiers (SCR)

A-002-005-003: When a silicon-controlled rectifier (SCR) is triggered to what other semiconductor diode are its electrical characteristics similar (as measured between its cathode and anode)?

 

17 / 50

Category: Radiation resistance, antenna efficiency, beamwidths

A-007-008-008: What is the term used for an equivalent resistance which would dissipate the same amount of energy as that radiated from an antenna?

18 / 50

Category: germanium, silicon, gallium arsenide, doping, P-type, N-type (Semiconductors)

A-002-001-002: In what application is gallium-arsenide used as a semiconductor material in preference to germanium or silicon?

 

19 / 50

Category: Filter circuits, bleeder resistor functions

A-004-002-011: In a properly designed choke input filter power supply, the no-load voltage across the filter capacitor will be about nine-tenths of the AC RMS voltage yet it is advisable to use capacitors rated at the peak transformer voltage. Why is this large safety margin suggested?

20 / 50

Category: Advanced filter circuits – AF, RF

A-002-012-004: What are the distinguishing features of a Chebyshev filter?

21 / 50

Category: Transformer and rectifier circuits, voltage doubler circuit, PIPs

A-004-001-008: Full-wave voltage doublers:

22 / 50

Category: Linear and switching voltage regulator circuits

A-004-003-008: In addition to an input voltage range what are the important characteristics of a three-terminal regulator?

23 / 50

Category: Diodes – point-contact, junction, hot-carrier and Zener

A-002-002-010: If a Zener diode rated at 10 V and 50 watts was operated at maximum dissipation rating it would conduct ____ amperes:

 

 

 

24 / 50

Category: Codes and protocols, Baudot, ASCII, parity, CRC, X.25, ISO layers

A-005-008-010: How many information bits are included in the Baudot code?

25 / 50

Category: germanium, silicon, gallium arsenide, doping, P-type, N-type (Semiconductors)

A-002-001-006: What are the majority charge carriers in N-type semiconductor material?

 

 

26 / 50

Category: Antenna tuner/transmatch, impedance matching circuits

A-007-001-008: How does a network transform one impedance to another?

27 / 50

Category: Advanced Antenna Design

Which type of antenna is most sensitive to the height above ground?

28 / 50

Category: Quartz crystal – properties and applications

A-002-011-011: Crystals are not applicable to which of the following?

29 / 50

Category: Velocity factor, the effect of line terminated in non-characteristic impedances

A-007-002-011: The velocity factor of a transmission line is the:

30 / 50

Category: Electrostatic and electromagnetic fields, skin effect

A-001-002-003 Where does almost all RF current flow in a conductor?

31 / 50

Category: spread spectrum – frequency hopping, direct sequences

A-005-009-011: How does the spread-spectrum technique of frequency hopping work?

32 / 50

Category: Transformer and rectifier circuits, voltage doubler circuit, PIPs

A-004-001-002: In a half-wave power supply with a capacitor input filter and a load drawing little or no current, the peak inverse voltage (PIV) across the diode can reach _____ times the RMS voltage.

33 / 50

Category: Quality factor (Q)

A-001-005-010: What is the Q of a parallel RLC circuit, if it is resonant at 3.625 MHz, L is 43 microhenrys and R is 1.8 kilohms?

34 / 50

Category: Digital logic elements

A-002-010-001: What is a NAND gate?

35 / 50

Category: Single, double-conversion superheterodyne architectures

A-006-001-010: A double conversion receiver designed for SSB reception has a beat frequency oscillator and:

36 / 50

Category: Meters, multimeter, power meter

A-003-006-006: The sensitivity of a voltmeter, whose resistance is 150 000 ohms on the 150-volt range, is:

37 / 50

Category: AC – peak, peak-to-peak, average, RMS

A-003-001-006: The effective value of a sine wave of voltage or current is:

38 / 50

Category: germanium, silicon, gallium arsenide, doping, P-type, N-type (Semiconductors)

A-002-001-001: What two elements widely used in semiconductor devices exhibit both metallic and non-metallic characteristics?

 

39 / 50

Category: Series-resonance

A-001-003-003: What is the resonant frequency of a series RLC circuit, if R is 47 ohms, L is 50 microhenrys and C is 10 picofarads?

40 / 50

Category: Oscillators, mixers, tunings

A-006-002-006: It is very important that the oscillators contained in a superheterodyne receiver are:

41 / 50

Category: Parallel resonance

A-001-004-010: What is the resonant frequency of a parallel RLC circuit if R is 4.7 kilohms, L is 90 microhenrys and C is 100 picofarads?

42 / 50

Category: Quartz crystal – properties and applications

A-002-011-010: Crystal oscillators, filters and microphones depend upon which principle?

43 / 50

Category: Quartz crystal – properties and applications

A-002-011-003: For single-sideband phone emissions, what would be the bandwidth of a good crystal lattice filter?

44 / 50

Category: Electrostatic and electromagnetic fields, skin effect

A-001-002-007 A wire has a current passing through it. Surrounding the wire there is:

45 / 50

Category: Transformer and rectifier circuits, voltage doubler circuit, PIPs

A-004-001-009: What are the two major ratings that must not be exceeded for silicon-diode rectifiers used in power-supply circuits?

46 / 50

Category: Advanced filter circuits – AF, RF

A-002-012-006: On VHF and above, 1/4 wavelength coaxial cavities are used to give protection from high-level signals. For a frequency of approximately 50 MHz, the diameter of such a device would be about 10 cm (4 in). What would be its approximate length?

47 / 50

Category: AC – peak, peak-to-peak, average, RMS

A-003-001-005: In applying Ohm’s law to AC circuits, current and voltage values are:

48 / 50

Category: Signal processing – AF, IF, and RFs

A-005-007-001: Maintaining the peak RF output of a SSB transmitter at a relatively constant level requires a circuit called the:

49 / 50

Category: RF, IF amplifiers, selectivity

A-006-003-007: The lower the receiver noise figure becomes, the greater will be the receiver’s _________:

50 / 50

Category: Quality factor (Q)

A-001-005-004: What is the Q of a parallel RLC circuit, if it is resonant at 14.225 MHz, L is 3.5 microhenrys and R is 10 kilohms?

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